Access to Astronomical Catalogues

J/MNRAS/382/412   Catalog of SDSS-DR5/2MASS spectroscopic quasars   (Ofek, 2007)
SDSS J131339.98+515128.3: A new gravitationally lensed quasar selected on
near-infrared excess.
     Ofek E.O., Oguri M., Jackson N., Inada N., Kayo I.
    <Mon. Not. R. Astron. Soc. 382, 412 (2007)>
    =2007MNRAS.382..412O
ADC_Keywords: QSOs ; Radio sources ; Infrared sources ; Redshifts

Keywords: gravitational lensing - quasars: individual: SDSS J131339.98+515128.3


Abstract:
    We present a catalog of 13444 SDSS-DR5 spectroscopic quasars which
    have an 2MASS near-IR counterpart within 5" of their position.

Description:
    We cross-correlate the SDSS Data Release 5 (DR5) spectroscopic quasars
    with Two Micron All Sky Survey (2MASS) point sources (Cutri et al.
    2003, Cat. II/246). Specifically we look for a 2MASS point source
    within 5" from each quasar position and extract its IR magnitudes and
    radio flux in the FIRST catalogue (Becker et al., 1995, See Cat.
    VIII/71).

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
catalog.dat      222    13444   Catalog of SDSS-DR5 spectroscopic quasars
                               with 2MASS counterpart


See also:
    II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
    II/276 : The SDSS Photometric Catalog, Release 5 (Adelman-McCarthy+, 2007)
   VIII/71 : The FIRST Survey Catalog, Version 03Apr11 (Becker+ 2003)
   http://www.sdss.org : SDSS Home Page


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

   Bytes Format Units   Label   Explanations

   1- 10  F10.6 deg     RAdeg   Right ascension (J2000.0)
  12- 21  F10.6 deg     DEdeg   Declination (J2000.0)
  23- 27  F5.3  ---     z       SDSS-DR5 spectroscopic redshift
  29- 33  F5.3  ---     e_z     Uncertainty in spectroscopic redshift
  35- 38  F4.2  ---     zconf   Confidence of redshift
      40  I1    ---     sC      [3,4] SDSS-DR5 spectroscopic class (1)
      42  I1    ---     Type    SDSS-DR5 object type (2)
  45- 50  F6.3  mag     umag    ?=- SDSS u-band PSF magnitude
  52- 56  F5.3  mag     e_umag  ?=- SDSS u-Band PSF magnitude error
  58- 62  F5.3  mag     E(u)    SDSS u-Band Galactic extinction
  64- 69  F6.3  mag     gmag    ?=- SDSS g-band PSF magnitude
  71- 75  F5.3  mag     e_gmag  ?=- SDSS g-Band PSF magnitude error
  77- 81  F5.3  mag     E(g)    SDSS g-Band Galactic extinction
  83- 88  F6.3  mag     rmag    ?=- SDSS r-band PSF magnitude
  90- 94  F5.3  mag     e_rmag  ?=- SDSS r-Band PSF magnitude error
  96-100  F5.3  mag     E(r)    SDSS r-Band Galactic extinction
 102-107  F6.3  mag     imag    ?=- SDSS i-band PSF magnitude
 109-113  F5.3  mag     e_imag  ?=- SDSS i-Band PSF magnitude error
 115-119  F5.3  mag     E(i)    SDSS i-Band Galactic extinction
 121-126  F6.3  mag     zmag    ?=- SDSS z-band PSF magnitude
 128-132  F5.3  mag     e_zmag  ?=- SDSS z-Band PSF magnitude error
 134-138  F5.3  mag     E(z)    SDSS z-Band Galactic extinction
 141-146  F6.3  mag     Jmag    2MASS J-band magnitude
 148-152  F5.3  mag     e_Jmag  ?=- 2MASS J-band magnitude error
 154-159  F6.3  mag     Hmag    2MASS H-band magnitude
 161-165  F5.3  mag     e_Hmag  ?=- 2MASS H-band magnitude error
 167-172  F6.3  mag     Kmag    2MASS K-band magnitude
 174-178  F5.3  mag     e_Kmag  ?=- 2MASS K-band magnitude error
 181-184  F4.2  arcsec  Dist2   SDSS-2MASS distance
 186-193  F8.2  mJy     S20     ?=- FIRST peak flux at 1.4GHz (20cm)
 195-199  F5.2  mJy     e_S20   ?=- FIRST rms
 201-205  F5.1  arcsec  Maj     ?=- FIRST deconvolved Major axis FWHM
                                    derived from Gaussian model
 207-211  F5.1  arcsec  Min     ?=- FIRST deconvolved Minor axis FWHM
                                    derived from Gaussian model
 213-217  F5.1  deg     PA      ?=- FIRST deconvolved PA
 219-222  F4.2  arcsec  DistF   ?=- SDSS-FIRST distance

Note (1): class assigned from spectrum characteristics, as follows:
     3 = QSO (quasi-stellar object)
     4 = high-z QSO
Note (2): class assigned from image characteristics, as follows:
     0 = Unknown
     3 = Galaxy: extended object
     6 = Star: point-like source


Acknowledgements:
    Eran Ofek, eran(at)astro.caltech.edu
(End)                   Eran Ofek [Caltech], Patricia Vannier [CDS]  08-Aug-2007