NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2018-11-14 T05:03:55 PST
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You have selected the following parameters to search on:

Parameters for Distances and Cosmology: Ho= 73.0; Ωmatter = 0.27; Ωvacuum = 0.73;
Derived Quantities use a Redshift corrected to a Reference Frame defined by the 3K CMB

NED results for object NGC 3991*


3 objects found in NED.    

SOURCE LIST

Object list is sorted on RA or Longitude


 Row          Object Name                 EquJ2000.0       Object  Velocity/Redshift    Mag./  Separ.               Number of                                 Row 
 No.     (* => Essential Note)       RA               DEC  Type     km/s       z   Qual Filter arcmin Refs Notes Phot Posn Vel/z Diam Assoc Images   Spectra  No. 
1    NGC 3991S                      11h57m30.4s +32d20m02s G        3148  0.010501      14.20    ...    23     1   43    5     2    6     0 Retrieve Retrieve 1   
2    NGC 3991                       11h57m31.1s +32d20m16s GPair    3192  0.010647       ...     ...   134    10   50   11    19    4     1 Retrieve Retrieve 2   
3    NGC 3991N                      11h57m31.7s +32d20m30s G        3288  0.010966      14.9g    ...    31     0   63    9     6    8     0 Retrieve Retrieve 3   

Detailed information for each object


Object No. 1 - NGC 3991S

INDEX for NGC 3991S
Essential Data (jump to sub-section of this query report):

   Essential Note    
   Cross-IDs    
   Coordinates    
   Basic Data   
   Quantities Derived from Redshift    
   Redshift-Independent Distances
   Quick-Look Photometry and Luminosities
   Quick-Look Angular and Physical Sizes
   Classifications
   Foreground Galactic Extinction    
   External Services
Detailed Data (NED queries):

Images
   
43 Photometric data point(s) and SED   
Spectra   
Redshift-Independent Distances
23 Reference(s)   
5 Position data point(s)
2 Redshift data point(s)   
6 Diameter data point(s)   
1 Note(s)   

ESSENTIAL NOTE for NGC 3991S (Back to INDEX)
N/A

CROSS-IDENTIFICATIONS for NGC 3991S (Back to INDEX)
Object Names Type Object Names Type
NGC 3991SG SDSS J115730.38+322001.7 G
NGC 3991 NED01 G KTG 39A NED01 G
UGC 06933 NED01 G KPG 311A G
CGCG 186-073 NED01 G LDCE 0852 NED005 G
CGCG 1154.9+3236 NED01 G HDCE 0683 NED003 G
MCG +06-26-060 NED01 G NSA 140494 G
2MFGC 09396 G UZC J115730.4+322004 G
2MASX J11573046+3220030 IrS FIRST J115730.3+322001 RadioS
2MASXi J1157304+322002 IrS RSCG 47:[WBJ2013] D G
2MASS J11573044+3220029 IrS [DZ2015] 732-05 G

COORDINATES for NGC 3991S (Back to INDEX)

Position Reference:2007SDSS6.C...0000:

Reference    Frame     Longitude    Latitude        RA           DEC      Uncertainty Ellipse (arcsec)
                       (degrees)   (degrees)                              Semimajor Semiminor  PA(deg)
Equatorial (B1950.0)  178.733028   32.612135 11h54m55.927s +32d36m43.69s  5.00E-01  5.00E-01    0
Equatorial (J2000.0)  179.376600   32.333827 11h57m30.384s +32d20m01.78s  5.00E-01  5.00E-01    0
Ecliptic   (B1950.0)  164.627633   29.146306                              5.00E-01  5.00E-01    0
Ecliptic   (J2000.0)  165.329710   29.147503                              5.00E-01  5.00E-01    0
Galactic              185.708666   77.200305                              5.00E-01  5.00E-01    0
SuperGalactic          81.517528   -3.276837                              5.00E-01  5.00E-01    0
Additional detailed measurements with references are also available by clicking below:
5 Position data point(s)

REDSHIFT-INDEPENDENT DISTANCES for NGC 3991S (Back to INDEX)
 N/A 

CLASSIFICATIONS (TYPES, ATTRIBUTES) for NGC 3991S (Back to INDEX)
TypeAs PublishedNED HomogenizedFlagReference Code
HierarchyPPPair member (points to parent)...1972AISAO...7....3K
3 Detailed Classification(s)


FOREGROUND GALACTIC EXTINCTION for NGC 3991S (Back to INDEX)
Galactic Extinction from the Schlafly & Finkbeiner 2011, Appendix; 2011ApJ...737..103S (SF11) recalibration 
of the Schlegel, Finkbeiner & Davis 1998, Appendix B; 1998ApJ...500..525S (SFD98) infrared-based dust map.
The map is based on dust emission from COBE/DIRBE and IRAS/ISSA;
the recalibration assumes a Fitzpatrick (1999PASP..111...63F) reddening law with Rv = 3.1 and different source spectrum than SFD98.

L a n d o l tS D S SU K I R T
Filter [µm]U (0.35)B (0.43)V (0.54)R (0.64)I (0.80)u (0.36)g (0.47)r (0.62)i (0.75)z (0.89)J (1.25)H (1.66)K (2.19)L' (3.78)
Aλ [mag]0.0950.0800.0600.0480.0330.0930.0720.0500.0370.0280.0160.0100.0070.003
Show/Hide Aλ magnitudes in all 88 photometric bands based on SF11
For completeness, we include the original SFD98 values:
L a n d o l tS D S SU K I R T
Filter [µm]U (0.34)B (0.44)V (0.54)R (0.65)I (0.81)u (0.35)g (0.49)r (0.63)i (0.78)z (0.93)J (1.27)H (1.67)K (2.22)L' (3.81)
Aλ [mag]0.1200.0950.0730.0590.0430.1140.0840.0610.0460.0330.0200.0130.0080.003


Galactic Extinction based on H I Column Densities and Galaxy Counts
(Burstein & Heiles; 1982AJ.....87.1165B) assuming Rv = 3.1:
AB = 0.020 mag
See Notes on Galactic Extinction for important caveats.

BASIC DATA for NGC 3991S (Back to INDEX)
Helio. Radial Velocity     :      3148 +/-       14 km/s      
Redshift                   :  0.010501 +/- 0.000047        1999PASP..111..438F
Major Diameter (arcmin)    :  0.6 
Minor Diameter (arcmin)    :  0.2 
Magnitude and Filter       : 14.20
Classifications            : Sm                  

NOTE: This information is indicative only. With the exception of the
      redshift they are unreferenced and highly inhomogeneous as to
      their origin. The Radial Velocity (when available) is computed
      from the listed redshift. The remaining values are designed to
      orient the user with a quick-look, overall assessment of the
      general properties of the object in question. They are not
      averages nor are they standardized in any way.
Additional detailed measurements with references are also available by clicking below:
2 Redshift data point(s)      43 photometric data point(s)      6 Diameter data point(s)      

QUANTITIES DERIVED FROM REDSHIFT for NGC 3991S (Details)(Back to INDEX)
Calculated and Corrected Velocities
V (Heliocentric)           :    3148 +/-     14 km/s      1999PASP..111..438F
V (Kinematic LSR)          :    3153 +/-     14 km/s      1986MNRAS.221.1023K
V (Galactocentric GSR)     :    3148 +/-     14 km/s      1991RC3.9.C...0000d
V (Local Group)            :    3123 +/-     14 km/s      1996AJ....111..794K
V (3K CMB)                 :    3429 +/-     24 km/s      1996ApJ...473..576F
V (Virgo Infall only)      :    3393 +/-     24 km/s      2000ApJ...529..786M
V (Virgo + GA only)        :    3649 +/-     30 km/s      2000ApJ...529..786M
V (Virgo + GA + Shapley)   :    3670 +/-     30 km/s      2000ApJ...529..786M

Hubble Flow Distance and Distance Modulus (where Ho =   73.0 +/-   5 km/sec/Mpc)
D (Galactocentric GSR)     :    43.1 +/-    3.0 Mpc      (m-M) = 33.17 +/- 0.15 mag
D (Local Group)            :    42.8 +/-    3.0 Mpc      (m-M) = 33.16 +/- 0.15 mag
D (3K CMB)                 :    47.0 +/-    3.3 Mpc      (m-M) = 33.36 +/- 0.15 mag
D (Virgo Infall only)      :    46.5 +/-    3.3 Mpc      (m-M) = 33.34 +/- 0.15 mag
D (Virgo + GA only)        :    50.0 +/-    3.5 Mpc      (m-M) = 33.49 +/- 0.15 mag
D (Virgo + GA + Shapley)   :    50.3 +/-    3.5 Mpc      (m-M) = 33.51 +/- 0.15 mag

Scale at Hubble Flow Distances
Scale (Galactocentric GSR) :     209 pc/arcsec =  0.209 kpc/arcsec =  12.54 kpc/arcmin =   0.75 Mpc/degree
Scale (Local Group)        :     207 pc/arcsec =  0.207 kpc/arcsec =  12.45 kpc/arcmin =   0.75 Mpc/degree
Scale (3K CMB)             :     228 pc/arcsec =  0.228 kpc/arcsec =  13.66 kpc/arcmin =   0.82 Mpc/degree
Scale (Virgo Infall only)  :     225 pc/arcsec =  0.225 kpc/arcsec =  13.52 kpc/arcmin =   0.81 Mpc/degree
Scale (Virgo + GA only)    :     242 pc/arcsec =  0.242 kpc/arcsec =  14.54 kpc/arcmin =   0.87 Mpc/degree
Scale(Virgo + GA + Shapley):     244 pc/arcsec =  0.244 kpc/arcsec =  14.62 kpc/arcmin =   0.88 Mpc/degree

To Search for Nearby Objects (Physical Companions): Enter Your Preferred Values and click on "Submit Environment Search" button
Search for Objects within +/-arcmin where 100 kpc = 6.838 arcmin and Selected Redshift, defined by the Velocity Range: from to km/sec where V(Heliocentric) = 3148 km/sec
Cosmology-Corrected Quantities [Ho = 73.00 km/sec/Mpc, Ωmatter = 0.27, Ωvacuum = 0.73] [Redshift 0.011438 as corrected to the Reference Frame defined by the 3K Microwave Background Radiation] Luminosity Distance : 47.4 Mpc (m-M) = 33.38 mag Angular-Size Distance : 46.3 Mpc (m-M) = 33.33 mag Co-Moving Radial Distance : 46.9 Mpc (m-M) = 33.35 mag Co-Moving Tangential Dist. : 46.9 Mpc (m-M) = 33.35 mag Co-Moving Volume : 0.000431 Gpc^3 Light Travel-Time : 0.152 Gyr Age at Redshift 0.011438 : 13.147 Gyr Age of Universe : 13.299 Gyr Scale (Cosmology Corrected): 225 pc/arcsec = 0.225 kpc/arcsec = 13.48 kpc/arcmin = 0.81 Mpc/degree Surface Brightness Dimming : Flux Density per Unit Area = 0.95553; Magnitude per Unit Area = 0.04939 mag
To change Cosmological Input Parameters for Derived Quantities: Enter Your Preferred Values and click on "Submit Changed Hubble Parameters for this object" button
HoΩmatterΩvacuum     
Correct Redshift To the Reference Frame defined by: as Input for Calculation of the Distances and Cosmology-Corrected Quantities

QUICK-LOOK PHOTOMETRY and LUMINOSITIES for NGC 3991S (Back to INDEX)

The brightest flux in each of the following spectral regions, when available:
Gamma-Ray (ν > 2E19 Hz); X-Ray (2E19 Hz > ν > 2E16 Hz); Ultraviolet (2E16 Hz > ν > 9E14 Hz); Visual (9E14 Hz > ν > 3E14 Hz);
Near-Infrared (3E14 Hz > ν > 6E13 Hz); Mid-Infrared (6E13 Hz > ν > 7.5E12 Hz); Far-Infrared (7.5E12 Hz > ν > 1E12 Hz);
Sub-Millimeter (1E12 Hz > ν > 3E11 Hz); Millimeter (3E11 Hz > ν > 3E10 Hz); Radio (3E10 Hz > ν).

Spectral
Region
Band Apparent Mag or Flux Refcode Absolute Mag or νLν [W] νLν [L(Bolometric)]
Visualz (SDSS CModel) AB 17.694 asinh mag 2007SDSS6.C...0000:-15.68 [mag] 6.77E+07
Near-InfraredH 11.047 +/- 0.036 mag 20032MASX.C.......:-22.33 +/- 0.50 [mag] 4.96E+09 +/- 1.01E+09
Radio1.4 GHz (VLA) 34.4 milliJy 2002AJ....124..675C 1.29E+31 [W] 3.37E+04
NOTE: The above quantities are derived using a Distance Modulus of 33.38 mag corresponding to
a Luminosity Distance of 47.4 Mpc [assuming 10%uncertainty] using the Cosmology-Corrected Quantities.
The quantities quoted above have not necessarily been corrected for foreground extinction, and no K-Corrections have been applied.

View details and SED for 43 Photometric data point(s) available in NED.

QUICK-LOOK ANGULAR & PHYSICAL DIAMETERS for NGC 3991S (Back to INDEX)

The largest diameters in the Visual and Near-Infrared spectral regions, when available:

Passband Apparent Major Axis
(2a) [arcsec]
Apparent Minor Axis
(2b) [arcsec]
PA
[degrees]
(J2000.0)
Reference Level RefcodePhysical Major Axis
(2a) [kpc]
Physical Minor Axis
(2b) [kpc]
r (SDSS Isophotal) 5.574.8525 25.0 mag arcsec^-2^ 2007SDSS6.C...0000:1.361.18
K_s (2MASS "total") 142.9028.5830 Diameter for "total" magnitude 20032MASX.C.......:20032MASX.C.......:34.836.97
NOTE: At z <= 0.5, physical diameters are derived using a Scale at the Hubble Flow Distance (Virgo + GA + Shapley) of 0.244 kpc/arcsec.
The quantities quoted above have not necessarily been corrected for foreground extinction.

View details for 6 Diameter data point(s) available in NED.

EXTERNAL ARCHIVES AND SERVICES for NGC 3991S Help (Back to INDEX)
Resources for Object NamesSite/Service
Query SIMBAD by primary NED object name -- NGC 3991SSIMBAD (CDS, Strasbourg, France)
Revised New General Catalogue -- NGC 3991SVizieR Catalog Query (U.S. mirror, CfA/Harvard)
2MASS Extended Source Images (JHKs) -- 2MASX J11573046+3220030 NASA/IPAC Infrared Science Archive (IRSA)
2MASS Extended Source Images (JHKs) -- 2MASXi J1157304+322002 NASA/IPAC Infrared Science Archive (IRSA)
version
SDSS Sky Server
Query UZC Spectral Archive (60 arcsec search radius)Updated Zwicky Catalog Data (Harvard/SAO)
Original FIRST Source Catalog -- FIRST J115730.3+322001 Faint Images of the Radio Sky at Twenty-Centimeters
FIRST Survey, Version 1999Jul -- FIRST J115730.3+322001 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Query GALEX (NUV/FUV) Mission Archive (7.2 arcsec search radius) -- NGC 3991SGALEX Mission Data Archive at MAST
Explore IRSA resources with RADAR (10 arcsec search radius) -- NGC 3991SNASA/IPAC Infrared Science Archive (IRSA)
Resources for position 11h57m30.4s, +32d20m02s (J2000)Site/Service
Query Optical and UV Mission Archives (Default search radius)Multimission Archive at STScI (MAST)
Query High Energy Mission Archives (Default search radius)HEASARC (NASA/GSFC)
Explore resources with DataScope (15 arcmin search radius)HEASARC (NASA/GSFC)
version
SDSS Sky Server
Query IRSA for WISE images (10 arcmin search radius)NASA/IPAC Infrared Science Archive (IRSA)
Band(s): Size:
NASA/IPAC Infrared Science Archive (IRSA)
Band(s): Size:
NASA/IPAC Infrared Science Archive (IRSA)
NASA/IPAC Infrared Science Archive (IRSA)
 Size:    Contours (PS)  JPEG  FITS File 
NRAO/VLA Sky Survey (NVSS)
    Size:     GIF     FITS File  
Faint Images of the Radio Sky at Twenty-Centimeters
The NRAO Data Archive System

Back to the list



Object No. 2 - NGC 3991

INDEX for NGC 3991
Essential Data (jump to sub-section of this query report):

   Essential Note    
   Cross-IDs    
   Coordinates    
   Basic Data   
   Quantities Derived from Redshift    
   Redshift-Independent Distances
   Quick-Look Photometry and Luminosities
   Quick-Look Angular and Physical Sizes
   Classifications
   Foreground Galactic Extinction    
   External Services
Detailed Data (NED queries):

Images
   
50 Photometric data point(s) and SED   
Spectra   
Redshift-Independent Distances
134 Reference(s)   
11 Position data point(s)
19 Redshift data point(s)   
4 Diameter data point(s)   
10 Note(s)   
1 Association(s)   
UGC data    
RC3 data    

ESSENTIAL NOTE for NGC 3991 (Back to INDEX)
N/A

CROSS-IDENTIFICATIONS for NGC 3991 (Back to INDEX)
Object Names Type Object Names Type
NGC 3991GPair KTG 39A GPair
UGC 06933 GPair KPG 311 GPair
VV 523 GPair WBL 366-001 G
KUG 1154+326 GPair USGC U432 NED03 G
HARO 05 GPair HOLM 309C G
CGCG 186-073 GPair PGC 037613 G
CGCG 1154.9+3236 GPair UZC J115731.1+322016 G
MCG +06-26-060 GPair NVSS J115731+322016 RadioS
IRAS 11549+3237 IrS CALIFA 475 G
IRAS F11549+3236 IrS LGG 259:[G93] 003 G
AKARI J1157305+322021 IrS [M98j] 149 NED03 G
CG 0137 GPair    
     

COORDINATES for NGC 3991 (Back to INDEX)

Position Reference:1998AJ....115.1693C

Reference    Frame     Longitude    Latitude        RA           DEC      Uncertainty Ellipse (arcsec)
                       (degrees)   (degrees)                              Semimajor Semiminor  PA(deg)
Equatorial (B1950.0)  178.735936   32.616087  11h54m56.62s  +32d36m57.9s  2.30E+00  1.90E+00    0
Equatorial (J2000.0)  179.379500   32.337778  11h57m31.08s  +32d20m16.0s  2.30E+00  1.90E+00    0
Ecliptic   (B1950.0)  164.628069   29.150939                              2.30E+00  1.90E+00  153
Ecliptic   (J2000.0)  165.330147   29.152136                              2.30E+00  1.90E+00  153
Galactic              185.688087   77.201214                              2.30E+00  1.90E+00   69
SuperGalactic          81.514708   -3.273138                              2.30E+00  1.90E+00  111
Additional detailed measurements with references are also available by clicking below:
11 Position data point(s)

REDSHIFT-INDEPENDENT DISTANCES for NGC 3991 (Back to INDEX)
 N/A 

CLASSIFICATIONS (TYPES, ATTRIBUTES) for NGC 3991 (Back to INDEX)
TypeAs PublishedNED HomogenizedFlagReference Code
HierarchyTin a triple...1988AISAO..26...42K
KinematicsHI line widthHI line width...1986AJ.....92..742S
Luminosity Class10.0LC V-VI...1991RC3.9.C...0000d
Galaxy MorphologyIm pec edge-onIm pec edge-on...1991RC3.9.C...0000d
23 Detailed Classification(s)


FOREGROUND GALACTIC EXTINCTION for NGC 3991 (Back to INDEX)
Galactic Extinction from the Schlafly & Finkbeiner 2011, Appendix; 2011ApJ...737..103S (SF11) recalibration 
of the Schlegel, Finkbeiner & Davis 1998, Appendix B; 1998ApJ...500..525S (SFD98) infrared-based dust map.
The map is based on dust emission from COBE/DIRBE and IRAS/ISSA;
the recalibration assumes a Fitzpatrick (1999PASP..111...63F) reddening law with Rv = 3.1 and different source spectrum than SFD98.

L a n d o l tS D S SU K I R T
Filter [µm]U (0.35)B (0.43)V (0.54)R (0.64)I (0.80)u (0.36)g (0.47)r (0.62)i (0.75)z (0.89)J (1.25)H (1.66)K (2.19)L' (3.78)
Aλ [mag]0.0950.0800.0600.0480.0330.0930.0720.0500.0370.0280.0160.0100.0070.003
Show/Hide Aλ magnitudes in all 88 photometric bands based on SF11
For completeness, we include the original SFD98 values:
L a n d o l tS D S SU K I R T
Filter [µm]U (0.34)B (0.44)V (0.54)R (0.65)I (0.81)u (0.35)g (0.49)r (0.63)i (0.78)z (0.93)J (1.27)H (1.67)K (2.22)L' (3.81)
Aλ [mag]0.1200.0950.0730.0590.0430.1140.0840.0610.0460.0330.0200.0130.0080.003


Galactic Extinction based on H I Column Densities and Galaxy Counts
(Burstein & Heiles; 1982AJ.....87.1165B) assuming Rv = 3.1:
AB = 0.020 mag
See Notes on Galactic Extinction for important caveats.

BASIC DATA for NGC 3991 (Back to INDEX)
Helio. Radial Velocity     :      3192 +/-        5 km/s      
Redshift                   :  0.010647 +/- 0.000017       1991RC3.9.C...0000d
Morphology                 : Strongly peculiar   
Magnitude and Filter       : 13.5 
Size (arcmin)              :   1.4
Population Count           :   0.4

NOTE: This information is indicative only. With the exception of the
      redshift they are unreferenced and highly inhomogeneous as to
      their origin. The Radial Velocity (when available) is computed
      from the listed redshift. The remaining values are designed to
      orient the user with a quick-look, overall assessment of the
      general properties of the object in question. They are not
      averages nor are they standardized in any way.
Additional detailed measurements with references are also available by clicking below:
19 Redshift data point(s)      50 photometric data point(s)      4 Diameter data point(s)      

QUANTITIES DERIVED FROM REDSHIFT for NGC 3991 (Details)(Back to INDEX)
Calculated and Corrected Velocities
V (Heliocentric)           :    3192 +/-      5 km/s      1991RC3.9.C...0000d
V (Kinematic LSR)          :    3197 +/-      5 km/s      1986MNRAS.221.1023K
V (Galactocentric GSR)     :    3192 +/-      5 km/s      1991RC3.9.C...0000d
V (Local Group)            :    3167 +/-      5 km/s      1996AJ....111..794K
V (3K CMB)                 :    3473 +/-     20 km/s      1996ApJ...473..576F
V (Virgo Infall only)      :    3436 +/-     20 km/s      2000ApJ...529..786M
V (Virgo + GA only)        :    3692 +/-     27 km/s      2000ApJ...529..786M
V (Virgo + GA + Shapley)   :    3714 +/-     27 km/s      2000ApJ...529..786M

Hubble Flow Distance and Distance Modulus (where Ho =   73.0 +/-   5 km/sec/Mpc)
D (Galactocentric GSR)     :    43.7 +/-    3.1 Mpc      (m-M) = 33.20 +/- 0.15 mag
D (Local Group)            :    43.4 +/-    3.0 Mpc      (m-M) = 33.19 +/- 0.15 mag
D (3K CMB)                 :    47.6 +/-    3.3 Mpc      (m-M) = 33.39 +/- 0.15 mag
D (Virgo Infall only)      :    47.1 +/-    3.3 Mpc      (m-M) = 33.36 +/- 0.15 mag
D (Virgo + GA only)        :    50.6 +/-    3.5 Mpc      (m-M) = 33.52 +/- 0.15 mag
D (Virgo + GA + Shapley)   :    50.9 +/-    3.6 Mpc      (m-M) = 33.53 +/- 0.15 mag

Scale at Hubble Flow Distances
Scale (Galactocentric GSR) :     212 pc/arcsec =  0.212 kpc/arcsec =  12.72 kpc/arcmin =   0.76 Mpc/degree
Scale (Local Group)        :     210 pc/arcsec =  0.210 kpc/arcsec =  12.62 kpc/arcmin =   0.76 Mpc/degree
Scale (3K CMB)             :     231 pc/arcsec =  0.231 kpc/arcsec =  13.84 kpc/arcmin =   0.83 Mpc/degree
Scale (Virgo Infall only)  :     228 pc/arcsec =  0.228 kpc/arcsec =  13.69 kpc/arcmin =   0.82 Mpc/degree
Scale (Virgo + GA only)    :     245 pc/arcsec =  0.245 kpc/arcsec =  14.71 kpc/arcmin =   0.88 Mpc/degree
Scale(Virgo + GA + Shapley):     247 pc/arcsec =  0.247 kpc/arcsec =  14.80 kpc/arcmin =   0.89 Mpc/degree

To Search for Nearby Objects (Physical Companions): Enter Your Preferred Values and click on "Submit Environment Search" button
Search for Objects within +/-arcmin where 100 kpc = 6.758 arcmin and Selected Redshift, defined by the Velocity Range: from to km/sec where V(Heliocentric) = 3192 km/sec
Cosmology-Corrected Quantities [Ho = 73.00 km/sec/Mpc, Ωmatter = 0.27, Ωvacuum = 0.73] [Redshift 0.011584 as corrected to the Reference Frame defined by the 3K Microwave Background Radiation] Luminosity Distance : 48 Mpc (m-M) = 33.41 mag Angular-Size Distance : 46.9 Mpc (m-M) = 33.36 mag Co-Moving Radial Distance : 47.5 Mpc (m-M) = 33.38 mag Co-Moving Tangential Dist. : 47.5 Mpc (m-M) = 33.38 mag Co-Moving Volume : 0.000448 Gpc^3 Light Travel-Time : 0.154 Gyr Age at Redshift 0.011584 : 13.145 Gyr Age of Universe : 13.299 Gyr Scale (Cosmology Corrected): 227 pc/arcsec = 0.227 kpc/arcsec = 13.65 kpc/arcmin = 0.82 Mpc/degree Surface Brightness Dimming : Flux Density per Unit Area = 0.95498; Magnitude per Unit Area = 0.05002 mag
To change Cosmological Input Parameters for Derived Quantities: Enter Your Preferred Values and click on "Submit Changed Hubble Parameters for this object" button
HoΩmatterΩvacuum     
Correct Redshift To the Reference Frame defined by: as Input for Calculation of the Distances and Cosmology-Corrected Quantities

QUICK-LOOK PHOTOMETRY and LUMINOSITIES for NGC 3991 (Back to INDEX)

The brightest flux in each of the following spectral regions, when available:
Gamma-Ray (ν > 2E19 Hz); X-Ray (2E19 Hz > ν > 2E16 Hz); Ultraviolet (2E16 Hz > ν > 9E14 Hz); Visual (9E14 Hz > ν > 3E14 Hz);
Near-Infrared (3E14 Hz > ν > 6E13 Hz); Mid-Infrared (6E13 Hz > ν > 7.5E12 Hz); Far-Infrared (7.5E12 Hz > ν > 1E12 Hz);
Sub-Millimeter (1E12 Hz > ν > 3E11 Hz); Millimeter (3E11 Hz > ν > 3E10 Hz); Radio (3E10 Hz > ν).

Spectral
Region
Band Apparent Mag or Flux Refcode Absolute Mag or νLν [W] νLν [L(Bolometric)]
X-Ray0.2-4 keV (EINSTEIN) 4.82E-13 ergs sec^-1^ cm^-2^ 1992ApJS...80..531F 1.33E+34 [W] 3.46E+07
Ultraviolet1150 A (FUSE) 14E-14 +/- 1E-14 erg/s/cm^2^/A 2007MNRAS.381..228P 4.45E+36 +/- 9.45E+35 [W] 1.16E+10 +/- 2.46E+09
VisualV (V_T^0) 12.93 mag 1991RC3.9.C...0000d-20.48 [mag] 9.52E+09
Mid-Infrared25 microns (IRAS) 2.438E-01 +/- 17 % Jy 1990IRASF.C...0000M 8.08E+35 +/- 1.74E+35 [W] 2.10E+09 +/- 4.52E+08
Far-Infrared100 microns (IRAS) 4.22 +/- 0.45 Jy 2004AJ....127.3235S 3.49E+36 +/- 7.91E+35 [W] 9.08E+09 +/- 2.06E+09
Millimeter1250 microns (MRT) <6.6 milliJy 2004A&A...414..141A < 4.37E+32 [W] < 1.14E+06
Radio1.4GHz 36.6 +/- 1.8 milliJy 1998AJ....115.1693C 1.41E+31 +/- 2.91E+30 [W] 3.68E+04 +/- 7.57E+03
NOTE: The above quantities are derived using a Distance Modulus of 33.41 mag corresponding to
a Luminosity Distance of 48.0 Mpc [assuming 10%uncertainty] using the Cosmology-Corrected Quantities.
The quantities quoted above have not necessarily been corrected for foreground extinction, and no K-Corrections have been applied.

View details and SED for 50 Photometric data point(s) available in NED.

QUICK-LOOK ANGULAR & PHYSICAL DIAMETERS for NGC 3991 (Back to INDEX)

The largest diameters in the Visual and Near-Infrared spectral regions, when available:

Passband Apparent Major Axis
(2a) [arcsec]
Apparent Minor Axis
(2b) [arcsec]
PA
[degrees]
(J2000.0)
Reference Level RefcodePhysical Major Axis
(2a) [kpc]
Physical Minor Axis
(2b) [kpc]
RC3 D_25; R_25 (blue) 86.7024.2833 25.0 B-mag arcsec^-2^ 1991RC3.9.C...0000d21.385.99
NOTE: At z <= 0.5, physical diameters are derived using a Scale at the Hubble Flow Distance (Virgo + GA + Shapley) of 0.247 kpc/arcsec.
The quantities quoted above have not necessarily been corrected for foreground extinction.

View details for 4 Diameter data point(s) available in NED.

EXTERNAL ARCHIVES AND SERVICES for NGC 3991 Help (Back to INDEX)
Resources for Object NamesSite/Service
Query SIMBAD by primary NED object name -- NGC 3991SIMBAD (CDS, Strasbourg, France)
Revised New General Catalogue -- NGC 3991VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Uppsala General Catalog -- UGC 06933 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Original Zwicky Catalog -- CGCG 186-073 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Query UZC Spectral Archive (60 arcsec search radius)Updated Zwicky Catalog Data (Harvard/SAO)
Morphological Catalog of Galaxies -- MCG +06-26-060 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
IRAS Point Source Catalog -- IRAS 11549+3237 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
IRAS Faint Source Catalog -- IRAS F11549+3236 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Catalogue of Principal Galaxies -- PGC 037613 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Retrieve mean data from LEDA -- PGC 037613 The Lyon/Meudon Extragalactic Database (LEDA)
NRAO/VLA Sky Survey (NVSS)
Query GALEX (NUV/FUV) Mission Archive (7.2 arcsec search radius) -- NGC 3991GALEX Mission Data Archive at MAST
Explore IRSA resources with RADAR (10 arcsec search radius) -- NGC 3991NASA/IPAC Infrared Science Archive (IRSA)
Resources for position 11h57m31.1s, +32d20m16s (J2000)Site/Service
Query Optical and UV Mission Archives (Default search radius)Multimission Archive at STScI (MAST)
Query High Energy Mission Archives (Default search radius)HEASARC (NASA/GSFC)
Explore resources with DataScope (15 arcmin search radius)HEASARC (NASA/GSFC)
version
SDSS Sky Server
Query IRSA for WISE images (10 arcmin search radius)NASA/IPAC Infrared Science Archive (IRSA)
Band(s): Size:
NASA/IPAC Infrared Science Archive (IRSA)
Band(s): Size:
NASA/IPAC Infrared Science Archive (IRSA)
NASA/IPAC Infrared Science Archive (IRSA)
 Size:    Contours (PS)  JPEG  FITS File 
NRAO/VLA Sky Survey (NVSS)
    Size:     GIF     FITS File  
Faint Images of the Radio Sky at Twenty-Centimeters
The NRAO Data Archive System

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Object No. 3 - NGC 3991N

INDEX for NGC 3991N
Essential Data (jump to sub-section of this query report):

   Essential Note    
   Cross-IDs    
   Coordinates    
   Basic Data   
   Quantities Derived from Redshift    
   Redshift-Independent Distances
   Quick-Look Photometry and Luminosities
   Quick-Look Angular and Physical Sizes
   Classifications
   Foreground Galactic Extinction    
   External Services
Detailed Data (NED queries):

Images
   
63 Photometric data point(s) and SED   
Spectra   
Redshift-Independent Distances
31 Reference(s)   
9 Position data point(s)
6 Redshift data point(s)   
8 Diameter data point(s)   

ESSENTIAL NOTE for NGC 3991N (Back to INDEX)
N/A

CROSS-IDENTIFICATIONS for NGC 3991N (Back to INDEX)
Object Names Type Object Names Type
NGC 3991NG NSA 160803 G
NGC 3991 NED02 G LEDA 200277 G
UGC 06933 NED02 G SSTSL2 J115731.67+322028.4 IrS
CGCG 186-073 NED02 G UZC J115731.6+322029 G
CGCG 1154.9+3236 NED02 G FIRST J115731.5+322023 RadioS
MCG +06-26-060 NED02 G [WGB2006] 115454+32360_a G
2MASS J11573166+3220289 IrS [BKD2008] WR 412 VisS
SDSS J115731.73+322030.1 G [SB2012] 145 G
SDSS J115731.73+322030.2 G RSCG 47:[WBJ2013] C G
KTG 39A NED02 G [TTL2012] 488227 G
KPG 311B G SDSS J115731.72+322030.0 G
ASK 504044.0 G    

COORDINATES for NGC 3991N (Back to INDEX)

Position Reference:2007SDSS6.C...0000:

Reference    Frame     Longitude    Latitude        RA           DEC      Uncertainty Ellipse (arcsec)
                       (degrees)   (degrees)                              Semimajor Semiminor  PA(deg)
Equatorial (B1950.0)  178.738667   32.620022 11h54m57.280s +32d37m12.08s  5.00E-01  5.00E-01    0
Equatorial (J2000.0)  179.382222   32.341713 11h57m31.733s +32d20m30.17s  5.00E-01  5.00E-01    0
Ecliptic   (B1950.0)  164.628361   29.155490                              5.00E-01  5.00E-01    0
Ecliptic   (J2000.0)  165.330439   29.156687                              5.00E-01  5.00E-01    0
Galactic              185.667808   77.201988                              5.00E-01  5.00E-01    0
SuperGalactic          81.511849   -3.269584                              5.00E-01  5.00E-01    0
Additional detailed measurements with references are also available by clicking below:
9 Position data point(s)

REDSHIFT-INDEPENDENT DISTANCES for NGC 3991N (Back to INDEX)
 N/A 

CLASSIFICATIONS (TYPES, ATTRIBUTES) for NGC 3991N (Back to INDEX)
TypeAs PublishedNED HomogenizedFlagReference Code
HierarchyPPPair member (points to parent)...1972AISAO...7....3K
3 Detailed Classification(s)


FOREGROUND GALACTIC EXTINCTION for NGC 3991N (Back to INDEX)
Galactic Extinction from the Schlafly & Finkbeiner 2011, Appendix; 2011ApJ...737..103S (SF11) recalibration 
of the Schlegel, Finkbeiner & Davis 1998, Appendix B; 1998ApJ...500..525S (SFD98) infrared-based dust map.
The map is based on dust emission from COBE/DIRBE and IRAS/ISSA;
the recalibration assumes a Fitzpatrick (1999PASP..111...63F) reddening law with Rv = 3.1 and different source spectrum than SFD98.

L a n d o l tS D S SU K I R T
Filter [µm]U (0.35)B (0.43)V (0.54)R (0.64)I (0.80)u (0.36)g (0.47)r (0.62)i (0.75)z (0.89)J (1.25)H (1.66)K (2.19)L' (3.78)
Aλ [mag]0.0950.0800.0600.0480.0330.0930.0730.0500.0370.0280.0160.0100.0070.003
Show/Hide Aλ magnitudes in all 88 photometric bands based on SF11
For completeness, we include the original SFD98 values:
L a n d o l tS D S SU K I R T
Filter [µm]U (0.34)B (0.44)V (0.54)R (0.65)I (0.81)u (0.35)g (0.49)r (0.63)i (0.78)z (0.93)J (1.27)H (1.67)K (2.22)L' (3.81)
Aλ [mag]0.1200.0950.0730.0590.0430.1140.0840.0610.0460.0330.0200.0130.0080.003


Galactic Extinction based on H I Column Densities and Galaxy Counts
(Burstein & Heiles; 1982AJ.....87.1165B) assuming Rv = 3.1:
AB = 0.020 mag
See Notes on Galactic Extinction for important caveats.

BASIC DATA for NGC 3991N (Back to INDEX)
Helio. Radial Velocity     :      3288 +/-        3 km/s      
Redshift                   :  0.010966 +/- 0.000009        2006SDSS5.C...0000:
Major Diameter (arcmin)    :  0.66
Minor Diameter (arcmin)    :  0.41
Magnitude and Filter       : 14.9g
Classifications            : Sc;WR          HII  

NOTE: This information is indicative only. With the exception of the
      redshift they are unreferenced and highly inhomogeneous as to
      their origin. The Radial Velocity (when available) is computed
      from the listed redshift. The remaining values are designed to
      orient the user with a quick-look, overall assessment of the
      general properties of the object in question. They are not
      averages nor are they standardized in any way.
Additional detailed measurements with references are also available by clicking below:
6 Redshift data point(s)      63 photometric data point(s)      8 Diameter data point(s)      

QUANTITIES DERIVED FROM REDSHIFT for NGC 3991N (Details)(Back to INDEX)
Calculated and Corrected Velocities
V (Heliocentric)           :    3288 +/-      3 km/s      2006SDSS5.C...0000:
V (Kinematic LSR)          :    3293 +/-      3 km/s      1986MNRAS.221.1023K
V (Galactocentric GSR)     :    3287 +/-      3 km/s      1991RC3.9.C...0000d
V (Local Group)            :    3263 +/-      3 km/s      1996AJ....111..794K
V (3K CMB)                 :    3568 +/-     20 km/s      1996ApJ...473..576F
V (Virgo Infall only)      :    3528 +/-     19 km/s      2000ApJ...529..786M
V (Virgo + GA only)        :    3787 +/-     26 km/s      2000ApJ...529..786M
V (Virgo + GA + Shapley)   :    3810 +/-     26 km/s      2000ApJ...529..786M

Hubble Flow Distance and Distance Modulus (where Ho =   73.0 +/-   5 km/sec/Mpc)
D (Galactocentric GSR)     :    45.0 +/-    3.2 Mpc      (m-M) = 33.27 +/- 0.15 mag
D (Local Group)            :    44.7 +/-    3.1 Mpc      (m-M) = 33.25 +/- 0.15 mag
D (3K CMB)                 :    48.9 +/-    3.4 Mpc      (m-M) = 33.45 +/- 0.15 mag
D (Virgo Infall only)      :    48.3 +/-    3.4 Mpc      (m-M) = 33.42 +/- 0.15 mag
D (Virgo + GA only)        :    51.9 +/-    3.6 Mpc      (m-M) = 33.58 +/- 0.15 mag
D (Virgo + GA + Shapley)   :    52.2 +/-    3.7 Mpc      (m-M) = 33.59 +/- 0.15 mag

Scale at Hubble Flow Distances
Scale (Galactocentric GSR) :     218 pc/arcsec =  0.218 kpc/arcsec =  13.10 kpc/arcmin =   0.79 Mpc/degree
Scale (Local Group)        :     217 pc/arcsec =  0.217 kpc/arcsec =  13.00 kpc/arcmin =   0.78 Mpc/degree
Scale (3K CMB)             :     237 pc/arcsec =  0.237 kpc/arcsec =  14.22 kpc/arcmin =   0.85 Mpc/degree
Scale (Virgo Infall only)  :     234 pc/arcsec =  0.234 kpc/arcsec =  14.06 kpc/arcmin =   0.84 Mpc/degree
Scale (Virgo + GA only)    :     252 pc/arcsec =  0.252 kpc/arcsec =  15.09 kpc/arcmin =   0.91 Mpc/degree
Scale(Virgo + GA + Shapley):     253 pc/arcsec =  0.253 kpc/arcsec =  15.18 kpc/arcmin =   0.91 Mpc/degree

To Search for Nearby Objects (Physical Companions): Enter Your Preferred Values and click on "Submit Environment Search" button
Search for Objects within +/-arcmin where 100 kpc = 6.587 arcmin and Selected Redshift, defined by the Velocity Range: from to km/sec where V(Heliocentric) = 3288 km/sec
Cosmology-Corrected Quantities [Ho = 73.00 km/sec/Mpc, Ωmatter = 0.27, Ωvacuum = 0.73] [Redshift 0.011903 as corrected to the Reference Frame defined by the 3K Microwave Background Radiation] Luminosity Distance : 49.3 Mpc (m-M) = 33.47 mag Angular-Size Distance : 48.2 Mpc (m-M) = 33.41 mag Co-Moving Radial Distance : 48.8 Mpc (m-M) = 33.44 mag Co-Moving Tangential Dist. : 48.8 Mpc (m-M) = 33.44 mag Co-Moving Volume : 0.000486 Gpc^3 Light Travel-Time : 0.158 Gyr Age at Redshift 0.011903 : 13.141 Gyr Age of Universe : 13.299 Gyr Scale (Cosmology Corrected): 234 pc/arcsec = 0.234 kpc/arcsec = 14.02 kpc/arcmin = 0.84 Mpc/degree Surface Brightness Dimming : Flux Density per Unit Area = 0.95377; Magnitude per Unit Area = 0.05139 mag
To change Cosmological Input Parameters for Derived Quantities: Enter Your Preferred Values and click on "Submit Changed Hubble Parameters for this object" button
HoΩmatterΩvacuum     
Correct Redshift To the Reference Frame defined by: as Input for Calculation of the Distances and Cosmology-Corrected Quantities

QUICK-LOOK PHOTOMETRY and LUMINOSITIES for NGC 3991N (Back to INDEX)

The brightest flux in each of the following spectral regions, when available:
Gamma-Ray (ν > 2E19 Hz); X-Ray (2E19 Hz > ν > 2E16 Hz); Ultraviolet (2E16 Hz > ν > 9E14 Hz); Visual (9E14 Hz > ν > 3E14 Hz);
Near-Infrared (3E14 Hz > ν > 6E13 Hz); Mid-Infrared (6E13 Hz > ν > 7.5E12 Hz); Far-Infrared (7.5E12 Hz > ν > 1E12 Hz);
Sub-Millimeter (1E12 Hz > ν > 3E11 Hz); Millimeter (3E11 Hz > ν > 3E10 Hz); Radio (3E10 Hz > ν).

Spectral
Region
Band Apparent Mag or Flux Refcode Absolute Mag or νLν [W] νLν [L(Bolometric)]
Visualg (SDSS Model) AB 14.694 +/- 0.002 asinh mag 2006SDSS5.C...0000:-18.77 +/- 0.50 [mag] 2.25E+09 +/- 4.50E+08
Near-InfraredH (2MASS/FLWO) 13.4 +/- 0.038 mag 2006AJ....131.1163S-20.07 +/- 0.50 [mag] 6.10E+08 +/- 1.24E+08
Mid-Infrared24 microns (MIPS) 9.1505E+04 +/- 5.5951E+01 microJy 2013SSTSLC4.2....0C 3.39E+35 +/- 6.77E+34 [W] 8.80E+08 +/- 1.76E+08
Radio1.4GHz 14.23 milliJy 1995ApJ...450..559B 5.79E+30 [W] 1.51E+04
NOTE: The above quantities are derived using a Distance Modulus of 33.47 mag corresponding to
a Luminosity Distance of 49.3 Mpc [assuming 10%uncertainty] using the Cosmology-Corrected Quantities.
The quantities quoted above have not necessarily been corrected for foreground extinction, and no K-Corrections have been applied.

View details and SED for 63 Photometric data point(s) available in NED.

QUICK-LOOK ANGULAR & PHYSICAL DIAMETERS for NGC 3991N (Back to INDEX)

The largest diameters in the Visual and Near-Infrared spectral regions, when available:

Passband Apparent Major Axis
(2a) [arcsec]
Apparent Minor Axis
(2b) [arcsec]
PA
[degrees]
(J2000.0)
Reference Level RefcodePhysical Major Axis
(2a) [kpc]
Physical Minor Axis
(2b) [kpc]
r (SDSS Isophotal) 39.9525.1711 25.0 mag arcsec^-2^ 2006SDSS5.C...0000:10.116.37
NOTE: At z <= 0.5, physical diameters are derived using a Scale at the Hubble Flow Distance (Virgo + GA + Shapley) of 0.253 kpc/arcsec.
The quantities quoted above have not necessarily been corrected for foreground extinction.

View details for 8 Diameter data point(s) available in NED.

EXTERNAL ARCHIVES AND SERVICES for NGC 3991N Help (Back to INDEX)
Resources for Object NamesSite/Service
Query SIMBAD by primary NED object name -- NGC 3991NSIMBAD (CDS, Strasbourg, France)
Revised New General Catalogue -- NGC 3991NVizieR Catalog Query (U.S. mirror, CfA/Harvard)
version
SDSS Sky Server
Query UZC Spectral Archive (60 arcsec search radius)Updated Zwicky Catalog Data (Harvard/SAO)
Original FIRST Source Catalog -- FIRST J115731.5+322023 Faint Images of the Radio Sky at Twenty-Centimeters
FIRST Survey, Version 1999Jul -- FIRST J115731.5+322023 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Retrieve mean data from LEDA -- PGC 200277 The Lyon/Meudon Extragalactic Database (LEDA)
Query GALEX (NUV/FUV) Mission Archive (7.2 arcsec search radius) -- NGC 3991NGALEX Mission Data Archive at MAST
Explore IRSA resources with RADAR (10 arcsec search radius) -- NGC 3991NNASA/IPAC Infrared Science Archive (IRSA)
Resources for position 11h57m31.7s, +32d20m30s (J2000)Site/Service
Query Optical and UV Mission Archives (Default search radius)Multimission Archive at STScI (MAST)
Query High Energy Mission Archives (Default search radius)HEASARC (NASA/GSFC)
Explore resources with DataScope (15 arcmin search radius)HEASARC (NASA/GSFC)
version
SDSS Sky Server
Query IRSA for WISE images (10 arcmin search radius)NASA/IPAC Infrared Science Archive (IRSA)
Band(s): Size:
NASA/IPAC Infrared Science Archive (IRSA)
Band(s): Size:
NASA/IPAC Infrared Science Archive (IRSA)
NASA/IPAC Infrared Science Archive (IRSA)
 Size:    Contours (PS)  JPEG  FITS File 
NRAO/VLA Sky Survey (NVSS)
    Size:     GIF     FITS File  
Faint Images of the Radio Sky at Twenty-Centimeters
The NRAO Data Archive System

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