NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2018-12-13 T12:29:47 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 GRB 970228


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    GRB 970228                     05h01m57.0s +11d46m24s GammaS    ...       ...       ...     ...   265     3    4    0     0    0     0 Retrieve Retrieve 1   

Detailed information for each object


Object No. 1 - GRB 970228

INDEX for GRB 970228
Essential Data (jump to sub-section of this query report):

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

Images
   
4 Photometric data point(s) and SED   
Spectra   
Redshift-Independent Distances
265 Reference(s)   
3 Note(s)   

ESSENTIAL NOTE for GRB 970228 (Back to INDEX)
N/A

CROSS-IDENTIFICATIONS for GRB 970228 (Back to INDEX)
Object Names Type
GRB 970228GammaS

COORDINATES for GRB 970228 (Back to INDEX)

Position Reference:1997IAUC.6572A...1C

Reference    Frame     Longitude    Latitude        RA           DEC      Uncertainty Ellipse (arcsec)
                       (degrees)   (degrees)                              Semimajor Semiminor  PA(deg)
Equatorial (B1950.0)      74.791      11.702     04h59m10s     +11d42.1m  4.50E+02  4.50E+02    0
Equatorial (J2000.0)      75.487      11.773     05h01m57s     +11d46.4m  4.50E+02  4.50E+02    0
Ecliptic   (B1950.0)      74.832     -10.946                              4.50E+02  4.50E+02    0
Ecliptic   (J2000.0)      75.531     -10.940                              4.50E+02  4.50E+02    0
Galactic                 188.945     -17.911                              4.50E+02  4.50E+02    0
SuperGalactic            339.288     -50.785                              4.50E+02  4.50E+02    0

REDSHIFT-INDEPENDENT DISTANCES for GRB 970228 (Back to INDEX)

6 Distances found in NED View 6 Individual Distance Measurement(s) for GRB 970228

Summary Statistics computed by NED from 6 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.


GRB 970228 Distance Modulus
(mag)
Metric Distance
(Mpc)
Mean 42.24 2100.333
Std. Dev. 1.35 661.048
Min. 39.60 832.000
Max. 43.20 2610.000
Median 42.76 2260.000

CLASSIFICATIONS (TYPES, ATTRIBUTES) for GRB 970228 (Back to INDEX)
TypeAs PublishedNED HomogenizedFlagReference Code
Distance IndicatorGRBGRB...1999ApJ...511L..79S
5 Detailed Classification(s)


FOREGROUND GALACTIC EXTINCTION for GRB 970228 (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]0.9200.7700.5820.4600.3190.9000.7010.4850.3600.2680.1500.0950.0640.032
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]1.1030.8760.6730.5430.3941.0470.7700.5590.4230.3000.1830.1170.0750.031


Galactic Extinction based on H I Column Densities and Galaxy Counts
(Burstein & Heiles; 1982AJ.....87.1165B) assuming Rv = 3.1:
AB = 0.920 mag
See Notes on Galactic Extinction for important caveats.

BASIC DATA for GRB 970228 (Back to INDEX)

Description                : SAX/WFC             
Spare 2                    :      
Spare 3                    :      
Spare 4                    :      
Spare 5                    :         

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:
4 photometric data point(s)      

QUICK-LOOK PHOTOMETRY and LUMINOSITIES for GRB 970228 (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)]
Gamma-Ray40-700 keV (SAX/WFC) 3.7e-6 +/- 0.8e-6 erg cm^-2^ s^-1^ 2006MNRAS.370..185F 1.95E+44 +/- 6.56E+43 [W] 5.07E+17 +/- 1.70E+17
X-Ray1.6-10 keV BeppoSAX 20.8E-13 +/- 2.7E-13 erg cm^-2^ s^-1^ 2006A&A...455..813D 1.10E+38 +/- 3.17E+37 [W] 2.86E+11 +/- 8.24E+10
Sub-Millimeter850 microns (SCUBA) 1.78 +/- 1.32 milliJy 2004MNRAS.352.1073T 3.32E+35 +/- 2.60E+35 [W] 8.63E+08 +/- 6.77E+08
NOTE: The above quantities are derived using an estimated Distance Modulus of (42.24 +/- 1.35) mag corresponding to
a Metric Distance of (2100.333 +/- 661.048) 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 4 Photometric data point(s) available in NED.

EXTERNAL ARCHIVES AND SERVICES for GRB 970228 Help (Back to INDEX)
Resources for Object NamesSite/Service
Query SIMBAD by primary NED object name -- GRB 970228SIMBAD (CDS, Strasbourg, France)
Query GALEX (NUV/FUV) Mission Archive (7.2 arcsec search radius) -- GRB 970228GALEX Mission Data Archive at MAST
Explore IRSA resources with RADAR (10 arcsec search radius) -- GRB 970228NASA/IPAC Infrared Science Archive (IRSA)
Resources for position 05h01m57.0s, +11d46m24s (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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