NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2024-05-02 T04:17:50 PDT
Help | Comment | NED Home

You have selected the following parameters to search on:

Velocity(km/s): Unconstrained
Include ANY Object Type:
Exclude ANY Object Type:
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. 1

INDEX for GRB 081221
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
   Classifications
   Foreground Galactic Extinction    
   External Services
Detailed Data (NED queries):

Images		    
11 Photometric data point(s) and SED   
 Spectra   
Redshift-Independent Distances
109 Reference(s)   
11 Position data point(s)
4 Redshift data point(s)   
ESSENTIAL NOTE for GRB 081221 (Back to INDEX)
N/A

CROSS-IDENTIFICATIONS for GRB 081221 (Back to INDEX)
Object Names Type Object Names Type
GRB 081221GammaSGRB 081221 OA VisS
GRB 081221 HOST G GBM 081221.681 GammaS
[SBB2011] J015.7926-24.5481 XrayS   

COORDINATES for GRB 081221 (Back to INDEX)

Position Reference:2013GRB04.C...0000:

Reference    Frame     Longitude    Latitude        RA           DEC      Uncertainty Ellipse (arcsec)
                       (degrees)   (degrees)                              Semimajor Semiminor  PA(deg)
Equatorial (B1950.0)   15.186230  -24.816473  01h00m44.69s  -24d48m59.3s  1.60E+00  1.60E+00    0
Equatorial (J2000.0)   15.792708  -24.548139  01h03m10.25s  -24d32m53.3s  1.60E+00  1.60E+00    0
Ecliptic   (B1950.0)    3.341262  -28.663420                              1.60E+00  1.60E+00    0
Ecliptic   (J2000.0)    4.043334  -28.662408                              1.60E+00  1.60E+00    0
Galactic              169.237871  -86.308915                              1.60E+00  1.60E+00    0
SuperGalactic         273.166987   -8.258242                              1.60E+00  1.60E+00    0
Additional detailed measurements with references are also available by clicking below:
11 Position data point(s)

REDSHIFT-INDEPENDENT DISTANCES for GRB 081221 (Back to INDEX)

1 Distances found in NED View 1 Individual Distance Measurement(s) for GRB 081221

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.

GRB 081221 Distance Modulus
(mag)		 Metric Distance
(Mpc)
Mean 43.88 1830.000
Std. Dev. N/A N/A
Min. 43.88 1830.000
Max. 43.88 1830.000
Median 43.88 1830.000

CLASSIFICATIONS (TYPES, ATTRIBUTES) for GRB 081221 (Back to INDEX)
 N/A

FOREGROUND GALACTIC EXTINCTION for GRB 081221 (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]0.0940.0790.0590.0470.0330.0920.0720.0500.0370.0270.0150.0100.0070.003



  

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]0.1150.0920.0700.0570.0410.1090.0800.0580.0440.0310.0190.0120.0080.003




Galactic Extinction based on H I Column Densities and Galaxy Counts 
(Burstein & Heiles; 1982AJ.....87.1165B) assuming Rv = 3.1:
AB = 0.090 mag 

See Notes on Galactic Extinction for important caveats.

BASIC DATA for GRB 081221 (Back to INDEX)
Helio. Radial Velocity     :    677531 +/-        0 km/s UUN  
Redshift                   :  2.260000 +/- 0.000000  UUN   2016ApJ...817....7P

Description                     : Swift/XRT           
Log Flux Density (ergs/s/cm^2^) :      
Passband                        :      
Spare 4                         :      

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 Redshift data point(s)      11 photometric data point(s)      

QUANTITIES DERIVED FROM REDSHIFT for GRB 081221 (Details)(Back to INDEX)
Calculated and Corrected Velocities
V (Heliocentric)           :  677531 +/-      0 km/s UUN  2016ApJ...817....7P
V (Kinematic LSR)          :  677523 +/-      0 km/s UUN  1986MNRAS.221.1023K
V (Galactocentric GSR)     :  677526 +/-      0 km/s UUN  1991RC3.9.C...0000d
V (Local Group)            :  677558 +/-      2 km/s UUN  1996AJ....111..794K
V (3K CMB)                 :  677253 +/-     19 km/s UUN  1996ApJ...473..576F
V (Virgo Infall only)      :  677364 +/-     14 km/s UUN  2000ApJ...529..786M
V (Virgo + GA only)        :  677223 +/-     17 km/s UUN  2000ApJ...529..786M
V (Virgo + GA + Shapley)   :  677178 +/-     17 km/s UUN  2000ApJ...529..786M

Hubble Flow Distance and Distance Modulus (where Ho =   73.0 +/-   5 km/sec/Mpc)
D (Galactocentric GSR)     :  9281.2 +/-  649.7 Mpc      (m-M) = 44.84 +/- 0.15 mag
D (Local Group)            :  9281.6 +/-  649.7 Mpc      (m-M) = 44.84 +/- 0.15 mag
D (3K CMB)                 :  9277.4 +/-  649.4 Mpc      (m-M) = 44.84 +/- 0.15 mag
D (Virgo Infall only)      :  9279.0 +/-  649.5 Mpc      (m-M) = 44.84 +/- 0.15 mag
D (Virgo + GA only)        :  9277.0 +/-  649.4 Mpc      (m-M) = 44.84 +/- 0.15 mag
D (Virgo + GA + Shapley)   :  9276.4 +/-  649.3 Mpc      (m-M) = 44.84 +/- 0.15 mag

Scale at Hubble Flow Distances
Scale (Galactocentric GSR) :   44996 pc/arcsec = 44.996 kpc/arcsec = 2699.78 kpc/arcmin = 161.99 Mpc/degree
Scale (Local Group)        :   44998 pc/arcsec = 44.998 kpc/arcsec = 2699.91 kpc/arcmin = 161.99 Mpc/degree
Scale (3K CMB)             :   44978 pc/arcsec = 44.978 kpc/arcsec = 2698.70 kpc/arcmin = 161.92 Mpc/degree
Scale (Virgo Infall only)  :   44986 pc/arcsec = 44.986 kpc/arcsec = 2699.14 kpc/arcmin = 161.95 Mpc/degree
Scale (Virgo + GA only)    :   44976 pc/arcsec = 44.976 kpc/arcsec = 2698.58 kpc/arcmin = 161.91 Mpc/degree
Scale(Virgo + GA + Shapley):   44973 pc/arcsec = 44.973 kpc/arcsec = 2698.40 kpc/arcmin = 161.90 Mpc/degree













To Search for Nearby Objects (Physical Companions):
Enter Your Preferred Values and click on "Submit Environment Search" button 

Search for Objects within +/-arcmin where 100 kpc =  0.037 arcmin  
and Selected Redshift, defined by the Velocity Range:
from  to km/sec where V(Heliocentric) = 677531 km/sec  








Cosmology-Corrected Quantities [Ho =  73.00 km/sec/Mpc, Ωmatter =   0.27, Ωvacuum =   0.73]
[Redshift 2.259074 as corrected to the Reference Frame defined by the 3K Microwave Background Radiation]
Luminosity Distance        :    17783 Mpc      (m-M) = 46.25 mag
Angular-Size Distance      :     1674 Mpc      (m-M) = 41.12 mag
Co-Moving Radial Distance  :     5456 Mpc      (m-M) = 43.68 mag
Co-Moving Tangential Dist. :     5456 Mpc      (m-M) = 43.68 mag
Co-Moving Volume           : 680 Gpc^3
Light Travel-Time          :   10.412 Gyr
Age at Redshift 2.259074   :    2.886 Gyr
Age of Universe            :   13.299 Gyr
Scale (Cosmology Corrected):    8117 pc/arcsec =  8.117 kpc/arcsec = 487.01 kpc/arcmin =  29.22 Mpc/degree
Surface Brightness Dimming : Flux Density per Unit Area =  0.00886; Magnitude per Unit Area = 5.131 mag









To change Cosmological Input Parameters for Derived Quantities:
Enter Your Preferred Values and click on "Submit Changed Hubble Parameters for this object" button 

HoΩmatterΩvacuum
    


Correct Redshift To the Reference Frame defined by:

as Input for Calculation of the Distances and Cosmology-Corrected Quantities

QUICK-LOOK PHOTOMETRY and LUMINOSITIES for GRB 081221 (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-Ray100-150 keV (Swift) 41.10E-08 +/- 2.73E-08 erg/cm^2^/s 2011ApJS..195....2S 1.65E+43 +/- 1.09E+42 [W] 4.28E+16 +/- 2.85E+15
X-Ray15-150 keV (Swift) 147.00E-08 +/- 3.76E-08 erg/cm^2^/s 2011ApJS..195....2S 5.89E+43 +/- 1.51E+42 [W] 1.53E+17 +/- 3.92E+15
Near-Infrared3.6 microns IRAC AB 21.78 +/- 0.03 mag 2016ApJ...817....8P-22.10 +/- 0.03 [mag] 6.20E+08 +/- 1.72E+07
Radio8.46 GHz (VLA) 174 +/- 27 microJy 2012ApJ...746..156C 5.90E+32 +/- 9.15E+31 [W] 1.53E+06 +/- 2.38E+05
NOTE: The above quantities are derived using an estimated Distance Modulus of (43.88 +/- N/A) mag corresponding to
a Metric Distance of (1830.000 +/- N/A) 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 11 Photometric data point(s) available in NED.

EXTERNAL ARCHIVES AND SERVICES for GRB 081221 Help (Back to INDEX)
Resources for Object NamesSite/Service
Query SIMBAD by primary NED object name -- GRB 081221SIMBAD (CDS, Strasbourg, France)
Query GALEX (NUV/FUV) Mission Archive (7.2 arcsec search radius) -- GRB 081221GALEX Mission Data Archive at MAST
Explore IRSA resources with RADAR (10 arcsec search radius) -- GRB 081221NASA/IPAC Infrared Science Archive (IRSA)
Resources for position 01h03m10.2s, -24d32m53s (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)
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




Back to NED Home