NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2022-01-19 T15:23:48 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 SMC


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    Small Magellanic Cloud         00h52m44.8s -72d49m43s G         158  0.000527       2.7     ...  3689     9   56   13     5    3     0 Retrieve Retrieve 1   

Detailed information for each object


Object No. 1 - Small Magellanic Cloud

INDEX for Small Magellanic Cloud
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
  • 56 Photometric data point(s) and SED   
  • Spectra   
    Redshift-Independent Distances
    3689 Reference(s)   
    13 Position data point(s)
    5 Redshift data point(s)   
    3 Diameter data point(s)   
    9 Note(s)   
    ESO data    
    RC3 data    

    ESSENTIAL NOTE for Small Magellanic Cloud (Back to INDEX)
    N/A

    CROSS-IDENTIFICATIONS for Small Magellanic Cloud (Back to INDEX)
    Object Names Type Object Names Type
    Small Magellanic CloudG 11HUGS 018 G
    SMC G GLXY G291.4-41.7+191 RadioS
    NGC 0292 G Nubecula Minor G
    ESO 029- G 021 G XSS J00595-7303 XrayS
    ESO 005053-7304.3 G 2FGL J0059.0-7242e GammaS
    PGC1 5064336 NED004 G 1FGL J0101.3-7257 GammaS
    [RC2] A0051-73 G [SPB93] 016 G
    [RC1] A0051 G [TSA98] J005833.42-713534.33 XrayS
    PGC 003085 G    
         

    COORDINATES for Small Magellanic Cloud (Back to INDEX)

    Position Reference:1976RC2...C...0000d

    Reference    Frame     Longitude    Latitude        RA           DEC      Uncertainty Ellipse (arcsec)
                           (degrees)   (degrees)                              Semimajor Semiminor  PA(deg)
    Equatorial (B1950.0)     12.7500    -73.1000     00h51m00s     -73d06.0m  1.80E+02  1.80E+02    0
    Equatorial (J2000.0)     13.1866    -72.8286     00h52m44s     -72d49.7m  1.80E+02  1.80E+02    0
    Ecliptic   (B1950.0)    311.3795    -64.6010                              1.80E+02  1.80E+02    0
    Ecliptic   (J2000.0)    312.0882    -64.6054                              1.80E+02  1.80E+02    0
    Galactic                302.7969    -44.2992                              1.80E+02  1.80E+02    0
    SuperGalactic           224.2314    -14.8250                              1.80E+02  1.80E+02    0
    
    Additional detailed measurements with references are also available by clicking below:
    13 Position data point(s)

    REDSHIFT-INDEPENDENT DISTANCES for Small Magellanic Cloud (Back to INDEX)

    294 Distances found in NED View 294 Individual Distance Measurement(s) for Small Magellanic Cloud

    Summary Statistics computed by NED from 294 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.


    Small Magellanic Cloud Distance Modulus
    (mag)
    Metric Distance
    (Mpc)
    Mean 18.89 0.060
    Std. Dev. 0.27 0.007
    Min. 17.95 0.039
    Max. 19.96 0.098
    Median 18.93 0.061

    CLASSIFICATIONS (TYPES, ATTRIBUTES) for Small Magellanic Cloud (Back to INDEX)
    TypeAs PublishedNED HomogenizedFlagReference Code
    HierarchyGMGroup member...1979AN....300..181K
    Luminosity Class9.0LC V...1991RC3.9.C...0000d
    Galaxy MorphologySB(s)m pecSB(s)m pec...1991RC3.9.C...0000d
    Distance IndicatorType II CepheidsType II Cepheids...2011MNRAS.413..223M
    285 Detailed Classification(s)


    FOREGROUND GALACTIC EXTINCTION for Small Magellanic Cloud (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.
    WARNING: This position is 0.001 arc minutes from the center of the SMC. The value of E(B-V) is not derived from the IRAS/COBE extinction maps.
    See 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]0.1600.1340.1010.0800.0560.1570.1220.0850.0630.0470.0260.0170.0110.006
    Show/Hide Aλ magnitudes in all 88 photometric bands based on SF11
    For completeness, we include the original SFD98 values: WARNING: This position is 0.001 arc minutes from the center of the SMC. The value of E(B-V) is not derived from the IRAS/COBE extinction maps.
    See SFD98.
    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]0.2010.1600.1230.0990.0720.1910.1400.1020.0770.0550.0330.0210.0140.006


    Galactic Extinction based on H I Column Densities and Galaxy Counts
    (Burstein & Heiles; 1982AJ.....87.1165B) assuming Rv = 3.1:
    AB = 0.170 mag
    See Notes on Galactic Extinction for important caveats.

    BASIC DATA for Small Magellanic Cloud (Back to INDEX)
    Helio. Radial Velocity     :       158 +/-        4 km/s      
    Redshift                   :  0.000527 +/- 0.000013        1987A&A...171...33R
    Major Diameter (arcmin)    : 320  
    Minor Diameter (arcmin)    : 185  
    Magnitude and Filter       :  2.7 
    Classifications            : SB(s)m pec          
    
    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:
    5 Redshift data point(s)      56 photometric data point(s)      3 Diameter data point(s)      

    QUANTITIES DERIVED FROM REDSHIFT for Small Magellanic Cloud (Details)(Back to INDEX)
    Calculated and Corrected Velocities
    V (Heliocentric)           :     158 +/-      4 km/s      1987A&A...171...33R
    V (Kinematic LSR)          :     147 +/-      4 km/s      1986MNRAS.221.1023K
    V (Galactocentric GSR)     :      17 +/-      7 km/s      1991RC3.9.C...0000d
    V (Local Group)            :     -22 +/-     12 km/s      1996AJ....111..794K
    V (3K CMB)                 :     103 +/-      5 km/s      1996ApJ...473..576F
    V (Virgo Infall only)      :     -25 +/-     12 km/s      2000ApJ...529..786M
    V (Virgo + GA only)        :     -26 +/-     12 km/s      2000ApJ...529..786M
    V (Virgo + GA + Shapley)   :     -26 +/-     12 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) = 158 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 Small Magellanic Cloud (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)]
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