NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2018-11-18 T03:50:11 PST
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You have selected the following parameters to search on:

Velocity(km/s): Unconstrained
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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

Detailed Information for Object No. 1

INDEX for NGC 2997 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
14 Reference(s)   
2 Redshift data point(s)   

ESSENTIAL NOTE for NGC 2997 GROUP (Back to INDEX)
N/A

CROSS-IDENTIFICATIONS for NGC 2997 GROUP (Back to INDEX)
Object Names Type Object Names Type
NGC 2997 GROUPGGroupNBGC 54-01 GGroup
LGG 180 GGroup[TSK2008] 1008 GGroup

COORDINATES for NGC 2997 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)    145.4329    -31.2894     09h41m44s     -31d17.4m  1.50E+02  1.50E+02    0
Equatorial (J2000.0)    145.9777    -31.5195     09h43m54s     -31d31.2m  1.50E+02  1.50E+02    0
Ecliptic   (B1950.0)    161.3009    -42.0203                              1.50E+02  1.50E+02    0
Ecliptic   (J2000.0)    161.9937    -42.0188                              1.50E+02  1.50E+02    0
Galactic                262.5249     16.2710                              1.50E+02  1.50E+02    0
SuperGalactic           146.5697    -48.5244                              1.50E+02  1.50E+02    0

REDSHIFT-INDEPENDENT DISTANCES for NGC 2997 GROUP (Back to INDEX)
 N/A 

CLASSIFICATIONS (TYPES, ATTRIBUTES) for NGC 2997 GROUP (Back to INDEX)
 N/A 

FOREGROUND GALACTIC EXTINCTION for NGC 2997 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]0.4530.3790.2870.2270.1570.4430.3460.2390.1780.1320.0740.0470.0320.016
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]0.5680.4510.3470.2790.2030.5390.3970.2880.2180.1550.0940.0600.0380.016


Galactic Extinction based on H I Column Densities and Galaxy Counts
(Burstein & Heiles; 1982AJ.....87.1165B) assuming Rv = 3.1:
AB = 0.550 mag
See Notes on Galactic Extinction for important caveats.

BASIC DATA for NGC 2997 GROUP (Back to INDEX)
Helio. Radial Velocity     :      1059 km/s       
Redshift                   :  0.003532           2007ApJ...662..959P
Morphology                 :                     
Magnitude and Filter       :      
Size (arcmin)              :      
Population Count           :    10

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)      

QUANTITIES DERIVED FROM REDSHIFT(Details)
Calculated and Corrected Velocities
V (Heliocentric)           :    1059  km/s                2007ApJ...662..959P
V (Kinematic LSR)          :    1045  km/s                1986MNRAS.221.1023K
V (Galactocentric GSR)     :     839 +/-      9 km/s      1991RC3.9.C...0000d
V (Local Group)            :     755 +/-     18 km/s      1996AJ....111..794K
V (3K CMB)                 :    1373 +/-     22 km/s      1996ApJ...473..576F
V (Virgo Infall only)      :     925 +/-     22 km/s      2000ApJ...529..786M
V (Virgo + GA only)        :     939 +/-     22 km/s      2000ApJ...529..786M
V (Virgo + GA + Shapley)   :     940 +/-     22 km/s      2000ApJ...529..786M

Hubble Flow Distance and Distance Modulus (where Ho =   73.0 +/- 5 km/sec/Mpc)
D (Galactocentric GSR)     :    11.5 +/-    0.8 Mpc      (m-M) = 30.30 +/- 0.15 mag
D (Local Group)            :    10.3 +/-    0.8 Mpc      (m-M) = 30.07 +/- 0.16 mag
D (3K CMB)                 :    18.8 +/-    1.4 Mpc      (m-M) = 31.37 +/- 0.15 mag
D (Virgo Infall only)      :    12.7 +/-    0.9 Mpc      (m-M) = 30.51 +/- 0.15 mag
D (Virgo + GA only)        :    12.9 +/-    0.9 Mpc      (m-M) = 30.55 +/- 0.15 mag
D (Virgo + GA + Shapley)   :    12.9 +/-    0.9 Mpc      (m-M) = 30.55 +/- 0.15 mag

Scale at Hubble Flow Distances
Scale (Galactocentric GSR) :      56 pc/arcsec =  0.056 kpc/arcsec =   3.34 kpc/arcmin =   0.20 Mpc/degree
Scale (Local Group)        :      50 pc/arcsec =  0.050 kpc/arcsec =   3.01 kpc/arcmin =   0.18 Mpc/degree
Scale (3K CMB)             :      91 pc/arcsec =  0.091 kpc/arcsec =   5.47 kpc/arcmin =   0.33 Mpc/degree
Scale (Virgo Infall only)  :      61 pc/arcsec =  0.061 kpc/arcsec =   3.69 kpc/arcmin =   0.22 Mpc/degree
Scale (Virgo + GA only)    :      62 pc/arcsec =  0.062 kpc/arcsec =   3.74 kpc/arcmin =   0.22 Mpc/degree
Scale(Virgo + GA + Shapley):      62 pc/arcsec =  0.062 kpc/arcsec =   3.75 kpc/arcmin =   0.22 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 = 26.688 arcmin and Selected Redshift, defined by the Velocity Range: from to km/sec where V(Heliocentric) = 1059 km/sec
Cosmology-Corrected Quantities [Ho = 73.00 km/sec/Mpc, Ωmatter = 0.27, Ωvacuum = 0.73] [Redshift 0.004581 as corrected to the Reference Frame defined by the 3K Microwave Background Radiation] Luminosity Distance : 18.9 Mpc (m-M) = 31.38 mag Angular-Size Distance : 18.7 Mpc (m-M) = 31.36 mag Co-Moving Radial Distance : 18.8 Mpc (m-M) = 31.37 mag Co-Moving Tangential Dist. : 18.8 Mpc (m-M) = 31.37 mag Co-Moving Volume : 2.78e-05 Gpc^3 Light Travel-Time : 0.061 Gyr Age at Redshift 0.004581 : 13.238 Gyr Age of Universe : 13.299 Gyr Scale (Cosmology Corrected): 91 pc/arcsec = 0.091 kpc/arcsec = 5.44 kpc/arcmin = 0.33 Mpc/degree Surface Brightness Dimming : Flux Density per Unit Area = 0.98188; Magnitude per Unit Area = 0.01985 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 2997 GROUP Help (Back to INDEX)
Resources for Object NamesSite/Service
Query SIMBAD by primary NED object name -- NGC 2997 GROUPSIMBAD (CDS, Strasbourg, France)
Revised New General Catalogue -- NGC 2997 GROUPVizieR Catalog Query (U.S. mirror, CfA/Harvard)
Query GALEX (NUV/FUV) Mission Archive (7.2 arcsec search radius) -- NGC 2997 GROUPGALEX Mission Data Archive at MAST
Explore IRSA resources with RADAR (10 arcsec search radius) -- NGC 2997 GROUPNASA/IPAC Infrared Science Archive (IRSA)
Resources for position 09h43m54.6s, -31d31m10s (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)
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)
The NRAO Data Archive System





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