Access to Astronomical Catalogues

J/AJ/125/2411       SIRTF First-Look Survey                  (Condon+, 2003)
The SIRTF first-look survey. I. VLA image and source catalog.
    Condon J.J., Cotton W.D., Yin Q.F., Shupe D.L., Storrie-Lombardi L.J.,
    Helou G., Soifer B.T., Werner M.W.
   <Astron. J. 125, 2411 (2003)>
   =2003AJ....125.2411C (SIMBAD/NED BibCode)
ADC_Keywords: Radio sources ; Galaxies, radio ; Surveys

Mission_Name: Spitzer

Keywords: catalogs - galaxies: active - galaxies: starburst -
          infrared radiation - radio continuum - surveys

Abstract:
    The First-Look Survey (FLS) of the Space Infrared Telescope Facility
    (SIRTF) will cover about 5deg2 centered on J2000.0 (17:18+59:30) in
    order to characterize the extragalactic infrared sky 2 orders of
    magnitude deeper than the IRAS survey. We expect that most of the FLS
    far-infrared (λ = 160, 70, and 24 µm) sources will be
    star-forming galaxies obeying the very tight far-infrared/radio
    correlation and will be continuum radio sources with flux densities
    S≳100µJy at ν=1.4GHz. Conversely, radio sources stronger than
    100µJy are usually powered by star-forming galaxies, plus some
    active galactic nuclei, and most should be detectable by the SIRTF
    FLS. Thus, a sensitive radio survey can be used to select and identify
    most of the SIRTF FLS source population before launch. We used the
    B configuration of the VLA to make an image of the FLS area at
    ν=1.4GHz with σ≃23µJy/beam rms fluctuations, θ=5''
    resolution, and σα≃σδ≃0.5'' rms
    uncertainties in right ascension and declination. The resulting radio
    image and catalog of 3565 radio components with peak flux densities
    Sp≥5σ=115µJy/beam have been released via the Web to expedite
    follow-up optical identification and spectroscopy.

Mission:
    SIRTIF mission has been renamed Spitzer.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table1.dat       105     3565   Component Catalog
table2.dat        42      105   Multicomponent Sources Catalog


See also:
    http://sirtf.caltech.edu/SSC/fls/ : the First Look Survey (FLS)


Byte-by-byte Description of file: table1.dat

   Bytes Format Units    Label     Explanations

   1-  2  I2    h        RAh       Hour of right ascension (J2000)
   4-  5  I2    min      RAm       Minute of right ascension (J2000)
   7- 12  F6.3  s        RAs       Second of right ascension (J2000)
  14- 18  F5.3  s        e_RAs     RMS uncertainty in RAs (J2000)
      20  A1    ---      DE-       Sign of the declination (J2000)
  21- 22  I2    deg      DEd       Degrees of declination (J2000)
  24- 25  I2    arcmin   DEm       Arcminute of declination (J2000)
  27- 31  F5.2  arcsec   DEs       Arcsecond of declination (J2000)
  33- 36  F4.2  arcsec   e_DEs     RMS uncertainty in DEs (J2000)
  38- 44  F7.3  mJy      Flux      Integrated 1.4GHz flux density
  46- 50  F5.3  mJy      e_Flux    RMS uncertainty in Flux
      52  A1    ---     l_MajAxis  Upper limit symbol for MajAxis
  54- 57  F4.1  arcsec   MajAxis   Deconvolved source FWHM major axis
  59- 61  F3.1  arcsec  e_MajAxis  ? RMS uncertainty in MajAxis
      64  A1    ---     l_MinAxis  Upper limit symbol for MinAxis
  66- 69  F4.1  arcsec   MinAxis   Deconvolved source FWHM minor axis
  71- 73  F3.1  arcsec  e_MinAxis  ? RMS uncertainty in MinAxis
  75- 79  F5.1  deg      PosAng    ? Major-axis position angle (east of north)
  81- 84  F4.1  deg      e_PosAng  ? RMS uncertainty in PosAng
  86- 92  F7.2  pix      Xpix      X-axis pixel location of source on image
  94-100  F7.2  pix      Ypix      Y-axis pixel location of source on image
 102-105  A4    ---      Group     Group label for multicomponent sources


Byte-by-byte Description of file: table2.dat

   Bytes Format Units    Label     Explanations

   1-  4  A4    ---      Group     Component group number
   6-  7  I2    ---      Ncomp     Number of components in group
   9- 10  I2    h        RAh       Hour of right ascension (J2000)
  12- 13  I2    min      RAm       Minute of right ascension (J2000)
  15- 19  F5.2  s        RAs       Second of right ascension (J2000)
      21  A1    ---      DE-       Sign of the declination (J2000)
  22- 23  I2    deg      DEd       Degrees of declination (J2000)
  25- 26  I2    arcmin   DEm       Arcminute of declination (J2000)
  28- 31  F4.1  arcsec   DEs       Arcsecond of declination (J2000)
  33- 38  F6.2  mJy      Flux      Integrated 1.4GHz flux density
  40- 42  A3    ---      Fig       Figure number for contour plot

(End)                              Greg Schwarz [AAS]                19-Aug-2003