NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2018-11-21 T06:45:37 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 NGC 2070


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   *30 Dor                         05h38m42.3s -69d06m03s HII       ...       ...       ...     ...    54     1    0    0     0    2     0 Retrieve Retrieve 1   

Detailed information for each object


Object No. 1 - 30 Dor

INDEX for 30 Dor
Essential Data (jump to sub-section of this query report):

   Essential Note    
   Cross-IDs    
   Coordinates    
   Basic Data   
   Redshift-Independent Distances
   Quick-Look Angular and Physical Sizes
   Classifications
   Foreground Galactic Extinction    
   External Services
Detailed Data (NED queries):

Images

Spectra   
Redshift-Independent Distances
54 Reference(s)   
2 Diameter data point(s)   
1 Note(s)   

ESSENTIAL NOTE for 30 Dor (Back to INDEX)
In the Large Magellanic Cloud.                                                  

CROSS-IDENTIFICATIONS for 30 Dor (Back to INDEX)
Object Names Type Object Names Type
30 Dor* ESO 057-EN 006 Neb
NGC 2070 HII Tarantula Nebula Neb

COORDINATES for 30 Dor (Back to INDEX)

Position Reference:2000A&A...355L..27H

Reference    Frame     Longitude    Latitude        RA           DEC      Uncertainty Ellipse (arcsec)
                       (degrees)   (degrees)                              Semimajor Semiminor  PA(deg)
Equatorial (B1950.0)  84.7627458 -69.1265833 05h39m03.059s -69d07m35.70s  1.50E-01  1.50E-01    0
Equatorial (J2000.0)  84.6764892 -69.1009000 05h38m42.357s -69d06m03.24s  1.50E-01  1.50E-01    0
Ecliptic   (B1950.0) 305.1176689 -86.7589228                              1.50E-01  1.50E-01    0
Ecliptic   (J2000.0) 305.8935430 -86.7638423                              1.50E-01  1.50E-01    0
Galactic             279.4651806 -31.6717954                              1.50E-01  1.50E-01    0
SuperGalactic        214.6608564 -35.2732730                              1.50E-01  1.50E-01    0

REDSHIFT-INDEPENDENT DISTANCES for 30 Dor (Back to INDEX)

1 Distances found in NED View 1 Individual Distance Measurement(s) for 30 Dor

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.


30 Dor Distance Modulus
(mag)
Metric Distance
(Mpc)
Mean 18.60 0.052
Std. Dev. N/A N/A
Min. 18.60 0.052
Max. 18.60 0.052
Median 18.60 0.052

CLASSIFICATIONS (TYPES, ATTRIBUTES) for 30 Dor (Back to INDEX)
TypeAs PublishedNED HomogenizedFlagReference Code
Distance IndicatorOB StarsOB Stars...1997ApJS..112..457W
1 Detailed Classification(s)


FOREGROUND GALACTIC EXTINCTION for 30 Dor (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 88.889 arc minutes from the center of the LMC. 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]0.3250.2720.2060.1630.1130.3180.2480.1710.1270.0950.0530.0340.0230.011
Show/Hide Aλ magnitudes in all 88 photometric bands based on SF11
For completeness, we include the original SFD98 values: WARNING: This position is 88.889 arc minutes from the center of the LMC. 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]0.4080.3240.2490.2000.1460.3870.2840.2060.1560.1110.0680.0430.0280.011


Galactic Extinction based on H I Column Densities and Galaxy Counts
(Burstein & Heiles; 1982AJ.....87.1165B) assuming Rv = 3.1:
AB = 0.260 mag
See Notes on Galactic Extinction for important caveats.

BASIC DATA for 30 Dor (Back to INDEX)

Description                :                     
Magnitude and Filter       :      
Major Diameter             :      
Minor Diameter             :      

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 Diameter data point(s)      

QUICK-LOOK ANGULAR & PHYSICAL DIAMETERS for 30 Dor (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]
K_s (LGA/2MASS "total") 1149.601126.6160 Diameter for "total" magnitude 2003AJ....125..525J2003AJ....125..525J0.290.28
NOTE: Physical diameters are derived using a scale of 0.0003 kpc/arcsec based on Average NED-D Metric Distance of (0.052 +/- N/A) Mpc.
The quantities quoted above have not necessarily been corrected for foreground extinction.

View details for 2 Diameter data point(s) available in NED.

EXTERNAL ARCHIVES AND SERVICES for 30 Dor Help (Back to INDEX)
Resources for Object NamesSite/Service
Query SIMBAD by primary NED object name -- 30 DorSIMBAD (CDS, Strasbourg, France)
Revised New General Catalogue -- NGC 2070 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
ESO/Uppsala Survey -- ESO 057-EN 006 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Query GALEX (NUV/FUV) Mission Archive (7.2 arcsec search radius) -- 30 DorGALEX Mission Data Archive at MAST
Explore IRSA resources with RADAR (10 arcsec search radius) -- 30 DorNASA/IPAC Infrared Science Archive (IRSA)
Resources for position 05h38m42.3s, -69d06m03s (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)
The NRAO Data Archive System

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