NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-01-18 T01:31:54 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 CVn I Cloud


1 objects found in NED.    

SOURCE LIST

 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 4631 GROUP                 12h32m48.3s +33d57m07s GGroup    300  0.001001       ...     ...    34     1    0    0     0    0     0 Retrieve Retrieve 1   

Detailed information for each object


Object No. 1 - NGC 4631 GROUP

INDEX for NGC 4631 GROUP
Essential Data (jump to sub-section of this query report):

   Essential Note    
   Cross-IDs    
   Coordinates    
   Basic Data   
   Quantities Derived from Redshift    
   Redshift-Independent Distances
   Classifications
   Foreground Galactic Extinction    
   External Services
Detailed Data (NED queries):

Images

Spectra   
Redshift-Independent Distances
34 Reference(s)   
1 Note(s)   

ESSENTIAL NOTE for NGC 4631 GROUP (Back to INDEX)
N/A

CROSS-IDENTIFICATIONS for NGC 4631 GROUP (Back to INDEX)
Object Names Type Object Names Type
NGC 4631 GROUPGGroupCVn I CLOUD GGroup
LGG 291 GGroupCVn I GROUP GGroup
NBGC 14-06 NED01 GGroup[HG82] 60 NED10 GGroup
NBGC 14-07 NED02 GGroup[GH83] 094 NED15 GGroup

COORDINATES for NGC 4631 GROUP (Back to INDEX)

Position Reference:1993A&AS..100...47G

Reference    Frame     Longitude    Latitude        RA           DEC      Uncertainty Ellipse (arcsec)
                       (degrees)   (degrees)                              Semimajor Semiminor  PA(deg)
Equatorial (B1950.0)    187.5867     34.2278     12h30m21s     +34d13.7m  1.50E+02  1.50E+02    0
Equatorial (J2000.0)    188.2015     33.9521     12h32m48s     +33d57.1m  1.50E+02  1.50E+02    0
Ecliptic   (B1950.0)    171.4201     34.0196                              1.50E+02  1.50E+02    0
Ecliptic   (J2000.0)    172.1230     34.0200                              1.50E+02  1.50E+02    0
Galactic                152.2266     82.0869                              1.50E+02  1.50E+02    0
SuperGalactic            82.3319      4.2408                              1.50E+02  1.50E+02    0

REDSHIFT-INDEPENDENT DISTANCES for NGC 4631 GROUP (Back to INDEX)

1 Distances found in NED View 1 Individual Distance Measurement(s) for NGC 4631 GROUP

Summary Statistics computed by NED from 1 Distance(s) in the literature:
NOTE: These summary statistics are provided for "quick-look" reference only;
they are based exclusively on original values, as published.
No homogenization or corrections have been applied.


NGC 4631 GROUP Distance Modulus
(mag)
Metric Distance
(Mpc)
Mean 29.00 6.310
Std. Dev. N/A N/A
Min. 29.00 6.310
Max. 29.00 6.310
Median 29.00 6.310

CLASSIFICATIONS (TYPES, ATTRIBUTES) for NGC 4631 GROUP (Back to INDEX)
 N/A 

FOREGROUND GALACTIC EXTINCTION for NGC 4631 GROUP (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]0.0810.0680.0510.0410.0280.0790.0620.0430.0320.0240.0130.0080.0060.003
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]0.1010.0800.0620.0500.0360.0960.0700.0510.0390.0270.0170.0110.0070.003


Galactic Extinction based on H I Column Densities and Galaxy Counts
(Burstein & Heiles; 1982AJ.....87.1165B) assuming Rv = 3.1:
AB = 0.040 mag
See Notes on Galactic Extinction for important caveats.

BASIC DATA for NGC 4631 GROUP (Back to INDEX)
Helio. Radial Velocity     :       300 km/s       
Redshift                   :  0.001001           1996ApJ...473...42P
Morphology                 :                     
Magnitude and Filter       :      
Size (arcmin)              :      
Population Count           : 28   

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.

QUANTITIES DERIVED FROM REDSHIFT(Details)
Calculated and Corrected Velocities
V (Heliocentric)           :     300  km/s                1996ApJ...473...42P
V (Kinematic LSR)          :     308  km/s                1986MNRAS.221.1023K
V (Galactocentric GSR)     :     321 +/-      1 km/s      1991RC3.9.C...0000d
V (Local Group)            :     300 +/-      0 km/s      1996AJ....111..794K
V (3K CMB)                 :     562 +/-     18 km/s      1996ApJ...473..576F
V (Virgo Infall only)      :     247 +/-      4 km/s      2000ApJ...529..786M
V (Virgo + GA only)        :     269 +/-      4 km/s      2000ApJ...529..786M
V (Virgo + GA + Shapley)   :     270 +/-      4 km/s      2000ApJ...529..786M

Hubble Flow Distance and Distance Modulus (where Ho =   73.0 +/- 5 km/sec/Mpc)
D (Galactocentric GSR)     :    4.39 +/-   0.31 Mpc      (m-M) = 28.21 +/- 0.15 mag
D (Local Group)            :    4.12 +/-   0.29 Mpc      (m-M) = 28.07 +/- 0.15 mag
D (3K CMB)                 :    7.69 +/-   0.59 Mpc      (m-M) = 29.43 +/- 0.16 mag
D (Virgo Infall only)      :    3.38 +/-   0.24 Mpc      (m-M) = 27.65 +/- 0.15 mag
D (Virgo + GA only)        :    3.68 +/-   0.26 Mpc      (m-M) = 27.83 +/- 0.15 mag
D (Virgo + GA + Shapley)   :    3.70 +/-   0.26 Mpc      (m-M) = 27.84 +/- 0.15 mag

Scale at Hubble Flow Distances
Scale (Galactocentric GSR) :      21 pc/arcsec =  0.021 kpc/arcsec =   1.28 kpc/arcmin =   0.08 Mpc/degree
Scale (Local Group)        :      20 pc/arcsec =  0.020 kpc/arcsec =   1.20 kpc/arcmin =   0.07 Mpc/degree
Scale (3K CMB)             :      37 pc/arcsec =  0.037 kpc/arcsec =   2.24 kpc/arcmin =   0.13 Mpc/degree
Scale (Virgo Infall only)  :      16 pc/arcsec =  0.016 kpc/arcsec =   0.98 kpc/arcmin =   0.06 Mpc/degree
Scale (Virgo + GA only)    :      18 pc/arcsec =  0.018 kpc/arcsec =   1.07 kpc/arcmin =   0.06 Mpc/degree
Scale(Virgo + GA + Shapley):      18 pc/arcsec =  0.018 kpc/arcsec =   1.08 kpc/arcmin =   0.06 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 = 93.018 arcmin and Selected Redshift, defined by the Velocity Range: from to km/sec where V(Heliocentric) = 300 km/sec
Cosmology-Corrected Quantities [Ho = 73.00 km/sec/Mpc, Ωmatter = 0.27, Ωvacuum = 0.73] [Redshift 0.001873 as corrected to the Reference Frame defined by the 3K Microwave Background Radiation] Luminosity Distance : 7.7 Mpc (m-M) = 29.43 mag Angular-Size Distance : 7.68 Mpc (m-M) = 29.43 mag Co-Moving Radial Distance : 7.69 Mpc (m-M) = 29.43 mag Co-Moving Tangential Dist. : 7.69 Mpc (m-M) = 29.43 mag Co-Moving Volume : 1.91e-06 Gpc^3 Light Travel-Time : 0.025 Gyr Age at Redshift 0.001873 : 13.274 Gyr Age of Universe : 13.299 Gyr Scale (Cosmology Corrected): 37 pc/arcsec = 0.037 kpc/arcsec = 2.23 kpc/arcmin = 0.13 Mpc/degree Surface Brightness Dimming : Flux Density per Unit Area = 0.99254; Magnitude per Unit Area = 0.008128 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

EXTERNAL ARCHIVES AND SERVICES for NGC 4631 GROUP Help (Back to INDEX)
Resources for Object NamesSite/Service
Query SIMBAD by primary NED object name -- NGC 4631 GROUPSIMBAD (CDS, Strasbourg, France)
Revised New General Catalogue -- NGC 4631 GROUPVizieR Catalog Query (U.S. mirror, CfA/Harvard)
Query GALEX (NUV/FUV) Mission Archive (7.2 arcsec search radius) -- NGC 4631 GROUPGALEX Mission Data Archive at MAST
Explore IRSA resources with RADAR (10 arcsec search radius) -- NGC 4631 GROUPNASA/IPAC Infrared Science Archive (IRSA)
Resources for position 12h32m48.3s, +33d57m07s (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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