NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2018-07-22 T11:12:34 PDT
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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. 182

INDEX for NGC 6822
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
  • 95 Photometric data point(s) and SED   
  • Spectra   
    Redshift-Independent Distances
    804 Reference(s)   
    19 Position data point(s)
    10 Redshift data point(s)   
    6 Diameter data point(s)   
    16 Note(s)   
    RC3 data    

    ESSENTIAL NOTE for NGC 6822 (Back to INDEX)
    The position is the approximate center of the bar.                              
    

    CROSS-IDENTIFICATIONS for NGC 6822 (Back to INDEX)
    Object Names Type Object Names Type
    NGC 6822G IRAS F19420-1450 IrS
    IC 4895 G CGS 540 G
    DDO 209 G HIPASS J1944-14 RadioS
    MCG -02-50-006 G PGC 063616 G
    2MASX J19445619-1447512 IrS 11HUGS 405 G
    2MASXi J1944561-144805 IrS Barnard's Galaxy G
    IRAS 19420-1450 IrS [SPB93] 261 G
         

    COORDINATES for NGC 6822 (Back to INDEX)

    Position Reference:2010SEGC..C......0C

    Reference    Frame     Longitude    Latitude        RA           DEC      Uncertainty Ellipse (arcsec)
                           (degrees)   (degrees)                              Semimajor Semiminor  PA(deg)
    Equatorial (B1950.0)   295.53333   -14.92500  19h42m08.00s  -14d55m30.0s  1.00E+01  1.00E+01    0
    Equatorial (J2000.0)   296.24059   -14.80343  19h44m57.74s  -14d48m12.4s  1.00E+01  1.00E+01    0
    Ecliptic   (B1950.0)   294.77567     6.35106                              1.00E+01  1.00E+01    0
    Ecliptic   (J2000.0)   295.47396     6.34540                              1.00E+01  1.00E+01    0
    Galactic                25.33945   -18.39915                              1.00E+01  1.00E+01    0
    SuperGalactic          229.07595    57.08799                              1.00E+01  1.00E+01    0
    
    Additional detailed measurements with references are also available by clicking below:
    19 Position data point(s)

    REDSHIFT-INDEPENDENT DISTANCES for NGC 6822 (Back to INDEX)

    128 Distances found in NED View 128 Individual Distance Measurement(s) for NGC 6822

    Summary Statistics computed by NED from 128 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 6822 Distance Modulus
    (mag)
    Metric Distance
    (Mpc)
    Mean 23.50 0.520
    Std. Dev. 0.60 0.176
    Min. 19.83 0.093
    Max. 26.15 1.700
    Median 23.40 0.479

    CLASSIFICATIONS (TYPES, ATTRIBUTES) for NGC 6822 (Back to INDEX)
    TypeAs PublishedNED HomogenizedFlagReference Code
    HierarchyGMGroup member...1979AN....300..181K
    KinematicsHI line widthHI line width...1967ApJ...150....9R
    Luminosity Class10.0LC V-VI...1991RC3.9.C...0000d
    Galaxy MorphologyIB(s)mIB(s)m...1991RC3.9.C...0000d
    Distance IndicatorTully-FisherTully-Fisher...1988NBGC.C....0000T
    62 Detailed Classification(s)


    FOREGROUND GALACTIC EXTINCTION for NGC 6822 (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]1.0220.8550.6460.5110.3550.9990.7790.5390.4000.2980.1670.1060.0710.036
    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]1.3061.0370.7970.6430.4661.2390.9120.6610.5010.3560.2170.1380.0880.037


    Galactic Extinction based on H I Column Densities and Galaxy Counts
    (Burstein & Heiles; 1982AJ.....87.1165B) assuming Rv = 3.1:
    AB = 0.860 mag
    See Notes on Galactic Extinction for important caveats.

    BASIC DATA for NGC 6822 (Back to INDEX)
    Helio. Radial Velocity     :       -57 +/-        2 km/s      
    Redshift                   : -0.000190 +/- 0.000007        2004AJ....128...16K
    Major Diameter (arcmin)    :  15.5
    Minor Diameter (arcmin)    :  13.5
    Magnitude and Filter       :  9.31
    Classifications            : IB(s)m              
    
    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:
    10 Redshift data point(s)      95 photometric data point(s)      6 Diameter data point(s)      

    QUANTITIES DERIVED FROM REDSHIFT for NGC 6822 (Details)(Back to INDEX)
    Calculated and Corrected Velocities
    V (Heliocentric)           :     -57 +/-      2 km/s      2004AJ....128...16K
    V (Kinematic LSR)          :     -44 +/-      2 km/s      1986MNRAS.221.1023K
    V (Galactocentric GSR)     :      43 +/-      5 km/s      1991RC3.9.C...0000d
    V (Local Group)            :      64 +/-      8 km/s      1996AJ....111..794K
    V (3K CMB)                 :    -266 +/-     15 km/s      1996ApJ...473..576F
    V (Virgo Infall only)      :      73 +/-      8 km/s      2000ApJ...529..786M
    V (Virgo + GA only)        :      79 +/-      8 km/s      2000ApJ...529..786M
    V (Virgo + GA + Shapley)   :      80 +/-      8 km/s      2000ApJ...529..786M
    
    Hubble Flow Distance and Distance Modulus (where Ho =   73.0 +/-   5 km/sec/Mpc)
    D (Galactocentric GSR)     :    FLOW MODEL DOES NOT APPLY
    D (Local Group)            :     N/A   
    D (3K CMB)                 :     N/A   
    D (Virgo Infall only)      :     N/A   
    D (Virgo + GA only)        :     N/A   
    D (Virgo + GA + Shapley)   :     N/A   
    
    Scale at Hubble Flow Distances
    Scale (Galactocentric GSR) :     N/A 
    Scale (Local Group)        :     N/A 
    Scale (3K CMB)             :     N/A 
    Scale (Virgo Infall only)  :     N/A 
    Scale (Virgo + GA only)    :     N/A 
    Scale(Virgo + GA + Shapley):     N/A 
    
    
    To Search for Nearby Objects (Physical Companions): Enter Your Preferred Values and click on "Submit Environment Search" button
    Search for Objects within +/-arcmin and Selected Redshift, defined by the Velocity Range: from to km/sec where V(Heliocentric) = -57 km/sec
    Cosmology-Corrected Quantities [Ho = 73.00 km/sec/Mpc, Ωmatter = 0.27, Ωvacuum = 0.73] [Redshift -0.003329 as corrected to the Reference Frame defined by the 3K Microwave Background Radiation] Cosmology Computations unstable or undefined

    QUICK-LOOK PHOTOMETRY and LUMINOSITIES for NGC 6822 (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) 8.56E-13 ergs sec^-1^ cm^-2^ 1992ApJS...80..531F 2.77E+30 [W] 7.20E+03
    UltravioletNUV (GALEX) AB 9.713 +/- 0.002 mag 2009ApJ...703.1569M-13.79 +/- 0.15 [mag] 5.25E+07 +/- 3.14E+06
    VisualV 2.24 Jy 2007ApJ...655..863D 3.95E+34 [W] 1.03E+08
    Near-Infrared3.6 microns (IRAC) 0.489 +/- 0.013 log(Jy) 2009ApJ...703.1569M 8.41E+33 +/- 5.63E+32 [W] 2.19E+07 +/- 1.46E+06
    Mid-Infrared24 microns (MIPS) 0.516 +/- 0.008 log(Jy) 2009ApJ...703.1569M 1.35E+33 +/- 8.44E+31 [W] 3.51E+06 +/- 2.19E+05
    Far-InfraredFIR (IRAS) 4.21E-12 W m^-2^ 1988ApJS...68...91R 1.36E+34 [W] 3.54E+07
    Radio750 MHz (NRAO) 0.5 Jy 1964AJ.....69..277H 1.21E+28 [W] 3.16E+01
    NOTE: The above quantities are derived using an estimated Distance Modulus of (23.50 +/- 0.60) mag corresponding to
    a Metric Distance of (0.520 +/- 0.176) Mpc using the Average NED-D value.
    The quantities quoted above have not necessarily been corrected for foreground extinction, and no K-Corrections have been applied.

    View details and SED for 95 Photometric data point(s) available in NED.

    QUICK-LOOK ANGULAR & PHYSICAL DIAMETERS for NGC 6822 (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_0 (blue) 1117.30...... 25.0 B-mag arcsec^-2^ 1991RC3.9.C...0000d2.82...
    K_s (LGA/2MASS "total") 528.40528.4027 Diameter for "total" magnitude 2003AJ....125..525J2003AJ....125..525J1.331.33
    NOTE: Physical diameters are derived using a scale of 0.0025 kpc/arcsec based on Average NED-D Metric Distance of (0.520 +/- 0.176) Mpc.
    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 6822 Help (Back to INDEX)
    Resources for Object NamesSite/Service
    Query SIMBAD by primary NED object name -- NGC 6822SIMBAD (CDS, Strasbourg, France)
    Revised New General Catalogue -- NGC 6822VizieR Catalog Query (U.S. mirror, CfA/Harvard)
    Morphological Catalog of Galaxies -- MCG -02-50-006 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
    2MASS Extended Source Images (JHKs) -- 2MASX J19445619-1447512 NASA/IPAC Infrared Science Archive (IRSA)
    2MASS Extended Source Images (JHKs) -- 2MASXi J1944561-144805 NASA/IPAC Infrared Science Archive (IRSA)
    IRAS Point Source Catalog -- IRAS 19420-1450 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
    IRAS Faint Source Catalog -- IRAS F19420-1450 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
    Catalogue of Principal Galaxies -- PGC 063616 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
    Retrieve mean data from LEDA -- PGC 063616 The Lyon/Meudon Extragalactic Database (LEDA)
    Query GALEX (NUV/FUV) Mission Archive (7.2 arcsec search radius) -- NGC 6822GALEX Mission Data Archive at MAST
    Explore IRSA resources with RADAR (10 arcsec search radius) -- NGC 6822NASA/IPAC Infrared Science Archive (IRSA)
    Resources for position 19h44m57.7s, -14d48m12s (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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