NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2018-11-17 T07:18:11 PST
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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.

INDEX for Sextans A
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
   
48 Photometric data point(s) and SED   
Spectra   
Redshift-Independent Distances
418 Reference(s)   
28 Position data point(s)
17 Redshift data point(s)   
4 Diameter data point(s)   
15 Note(s)   
RC3 data    

ESSENTIAL NOTE for Sextans A (Back to INDEX)
Position in 1975A&A....19....1G refers to a starcloud southeast of the center.  

CROSS-IDENTIFICATIONS for Sextans A (Back to INDEX)
Object Names Type Object Names Type
Sextans AG AGC 500034 G
UGCA 205 G HIPASS J1010-04 RadioS
DDO 075 G PGC 029653 G
MCG -01-26-030 G 11HUGS 190 G
IRAS F10085-0427 IrS GLXY G246.1+39.9+314 RadioS
CGS 615 G [HMS56] 1008.7-0428 G
[RC2] A1008-04 G [SPB93] 137 G
[RC1] A1009 G    
     

COORDINATES for Sextans A (Back to INDEX)

Position Reference:1999NEDR....1....1C

Reference    Frame     Longitude    Latitude        RA           DEC      Uncertainty Ellipse (arcsec)
                       (degrees)   (degrees)                              Semimajor Semiminor  PA(deg)
Equatorial (B1950.0)   152.12301    -4.44597  10h08m29.52s  -04d26m45.5s  5.00E+00  5.00E+00    0
Equatorial (J2000.0)   152.75333    -4.69278  10h11m00.80s  -04d41m34.0s  5.00E+00  5.00E+00    0
Ecliptic   (B1950.0)   155.75851   -14.86830                              5.00E+00  5.00E+00    0
Ecliptic   (J2000.0)   156.45537   -14.86619                              5.00E+00  5.00E+00    0
Galactic               246.14823    39.87558                              5.00E+00  5.00E+00    0
SuperGalactic          109.00627   -40.66216                              5.00E+00  5.00E+00    0
Additional detailed measurements with references are also available by clicking below:
28 Position data point(s)

REDSHIFT-INDEPENDENT DISTANCES for Sextans A (Back to INDEX)

53 Distances found in NED View 53 Individual Distance Measurement(s) for Sextans A

Summary Statistics computed by NED from 53 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.


Sextans A Distance Modulus
(mag)
Metric Distance
(Mpc)
Mean 25.75 1.427
Std. Dev. 0.27 0.196
Min. 24.99 0.996
Max. 26.80 2.290
Median 25.74 1.410

CLASSIFICATIONS (TYPES, ATTRIBUTES) for Sextans A (Back to INDEX)
TypeAs PublishedNED HomogenizedFlagReference Code
HierarchyF?Possible field galaxy...1979AN....300..181K
KinematicsHI line widthHI line width...2004AJ....128...16K
Luminosity Class10.0LC V-VI...1991RC3.9.C...0000d
Galaxy MorphologyIBmIBm...1991RC3.9.C...0000d
Distance IndicatorTully-FisherTully-Fisher...1988NBGC.C....0000T
60 Detailed Classification(s)


FOREGROUND GALACTIC EXTINCTION for Sextans A (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]0.1930.1610.1220.0970.0670.1890.1470.1020.0760.0560.0320.0200.0130.007
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]0.2370.1880.1450.1170.0850.2250.1650.1200.0910.0640.0390.0250.0160.007


Galactic Extinction based on H I Column Densities and Galaxy Counts
(Burstein & Heiles; 1982AJ.....87.1165B) assuming Rv = 3.1:
AB = 0.070 mag
See Notes on Galactic Extinction for important caveats.

BASIC DATA for Sextans A (Back to INDEX)
Helio. Radial Velocity     :       324 +/-        2 km/s      
Redshift                   :  0.001081 +/- 0.000007        2004AJ....128...16K
Major Diameter (arcmin)    :   5.9
Minor Diameter (arcmin)    :   4.9
Magnitude and Filter       : 11.86
Classifications            : IBm                 

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:
17 Redshift data point(s)      48 photometric data point(s)      4 Diameter data point(s)      

QUANTITIES DERIVED FROM REDSHIFT for Sextans A (Details)(Back to INDEX)
Calculated and Corrected Velocities
V (Heliocentric)           :     324 +/-      2 km/s      2004AJ....128...16K
V (Kinematic LSR)          :     315 +/-      2 km/s      1986MNRAS.221.1023K
V (Galactocentric GSR)     :     163 +/-      7 km/s      1991RC3.9.C...0000d
V (Local Group)            :      94 +/-     14 km/s      1996AJ....111..794K
V (3K CMB)                 :     682 +/-     25 km/s      1996ApJ...473..576F
V (Virgo Infall only)      :      91 +/-     14 km/s      2000ApJ...529..786M
V (Virgo + GA only)        :      95 +/-     14 km/s      2000ApJ...529..786M
V (Virgo + GA + Shapley)   :      95 +/-     14 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) = 324 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 Sextans A (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)]
UltravioletNUV (GALEX) AB 12.55 +/- 0.03 mag 2011ApJS..192....6L-13.20 +/- 0.10 [mag] 2.84E+07 +/- 1.33E+06
VisualV (V_T^0) 11.36 mag 1991RC3.9.C...0000d-14.39 [mag] 3.57E+07
Near-InfraredK_s 10.18 +/- 0.25 mag 2010ApJ...716..792F-15.57 +/- 0.27 [mag] 4.94E+07 +/- 1.15E+07
Mid-Infrared24 microns (MIPS) 3.78E-2 +/- 0.42E-2 Jy 2009ApJ...703..517D 1.17E+32 +/- 1.37E+31 [W] 3.04E+05 +/- 3.57E+04
Far-Infrared160 microns (MIPS) 1.07E+0 +/- 0.18E+0 Jy 2009ApJ...703..517D 5.01E+32 +/- 8.63E+31 [W] 1.30E+06 +/- 2.24E+05
Radio2.64 GHz Effelsberg <2.6 milliJy 2011A&A...529A..94C < 1.67E+27 [W] < 4.35E+00
NOTE: The above quantities are derived using an estimated Distance Modulus of (25.75 +/- 0.27) mag corresponding to
a Metric Distance of (1.427 +/- 0.196) 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 48 Photometric data point(s) available in NED.

QUICK-LOOK ANGULAR & PHYSICAL DIAMETERS for Sextans A (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) 353.30293.24... 25.0 B-mag arcsec^-2^ 1991RC3.9.C...0000d2.442.03
NOTE: Physical diameters are derived using a scale of 0.0069 kpc/arcsec based on Average NED-D Metric Distance of (1.427 +/- 0.196) Mpc.
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 Sextans A Help (Back to INDEX)
Resources for Object NamesSite/Service
Query SIMBAD by primary NED object name -- Sextans ASIMBAD (CDS, Strasbourg, France)
Morphological Catalog of Galaxies -- MCG -01-26-030 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
IRAS Faint Source Catalog -- IRAS F10085-0427 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Catalogue of Principal Galaxies -- PGC 029653 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Retrieve mean data from LEDA -- PGC 029653 The Lyon/Meudon Extragalactic Database (LEDA)
Query GALEX (NUV/FUV) Mission Archive (7.2 arcsec search radius) -- Sextans AGALEX Mission Data Archive at MAST
Explore IRSA resources with RADAR (10 arcsec search radius) -- Sextans ANASA/IPAC Infrared Science Archive (IRSA)
Resources for position 10h11m00.8s, -04d41m34s (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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