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J/ApJS/194/22   Magellanic Quasars Survey: QSOs behind SMC   (Kozlowski+, 2011)
The Magellanic Quasars Survey.
I. Doubling the number of known active galactic nuclei behind the
Small Magellanic Cloud.
    Kozlowski S., Kochanek C. S., Udalski A.
   <Astrophys. J. Suppl. Ser. 194, 22 (2011)>
   =2011ApJS..194...22K
ADC_Keywords: Magellanic Clouds ; Active gal. nuclei ; QSOs

Keywords: galaxies: active - Magellanic Clouds - quasars: general


Abstract:
    We report the spectroscopic confirmation of 29 new, 12 plausible, and
    three previously known quasars behind the central ∼1.5deg2 region of
    the Small Magellanic Cloud (SMC). These were identified in a single
    2df/AAOmega observation on the Anglo-Australian Telescope of 268
    candidates selected primarily based on their mid-IR colors, along with
    a smaller number of optically variable sources in OGLE-II close to
    known X-ray sources.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table1.dat       131       44   29 new, 12 plausible, and 3 previously known
                              quasars behind the SMC
table2.dat        91      224   Parameters of 224 remaining objects with spectra


See also:
   J/A+AS/142/41 : SMC X-ray sources ROSAT PSPC catalogue (Haberl+, 2000)
   J/AJ/136/18   : LMC SAGE. New candidate YSOs (Whitney+, 2008)


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

   Bytes Format Units   Label     Explanations

       1  A1    ---     n_Name    [NPK] New, Plausible or Known quasars (1)
   3- 21  A19   ---     Name      Object name (JHHMMSS.ss+DDMMSS.s)
  23- 24  I2    h       RAh       Right ascension (J2000)
  26- 27  I2    min     RAm       Right ascension (J2000)
  29- 33  F5.2  s       RAs       Right ascension (J2000)
      35  A1    ---     DE-       Declination sign (J2000)
  36- 37  I2    deg     DEd       Declination (J2000)
  39- 40  I2    arcmin  DEm       Declination (J2000)
  42- 46  F5.2  arcsec  DEs       Declination (J2000)
  48- 52  F5.2  mag     Vmag      V magnitude
  54- 58  F5.2  mag     Imag      I magnitude
  60- 64  F5.3  ---     z         ? Spectroscopic redshift
      65  A1    ---     u_z       [?] ? for unknown redshift
  67- 77  A11   ---     OGLE      OGLE-III identification (G1)
  79- 85  A7    ---     KK09      Kozlowski & Kochanek (2009ApJ...701..508K)
                                   classification
  87-122  A36   ---     EmLines   Emission lines
 124-131  A8    ---     Notes     Notes (3)

Note (1): Status as follows:
      N = new spectroscopically confirmed quasars
      P = plausible spectroscopically confirmed quasars
      K = previously known quasars
Note (3): Notes as follows:
      X = quasar with the X-ray counterpart (Haberl et al. 2000, 
          Cat. J/A+AS/142/41)
     B1 = sources incorrectly classified as high mass X-ray binaries in
          Shtykovskiy & Gilfanov (2005MNRAS.362..879S)
     B2 = sources incorrectly classified as high mass X-ray binaries in
          Haberl & Pietsch (2004A&A...414..667H)
      Y = sources incorrectly classified as YSOs in Whitney et al. 2008,
          Cat. J/AJ/136/18
      V = sources variable in OGLE-II
      D = quasar discovered by Dobrzycki et al. (2003AJ....125.1330D)
      G = quasar discovered by Geha et al. (2003AJ....125....1G)


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

   Bytes Format Units   Label     Explanations

   1- 20  A20   ---     Name      Object name (JHHMMSS.ss+DDMMSS.s)
  22- 23  I2    h       RAh       Hour of Right Ascension (J2000)
  25- 26  I2    min     RAm       Minute of Right Ascension (J2000)
  28- 32  F5.2  s       RAs       Second of Right Ascension (J2000)
      34  A1    ---     DE-       Sign of the Declination (J2000)
  35- 36  I2    deg     DEd       Degree of Declination (J2000)
  38- 39  I2    arcmin  DEm       Arcminute of Declination (J2000)
  41- 45  F5.2  arcsec  DEs       Arcsecond of Declination (J2000)
  47- 52  F6.3  mag     Vmag      ?=99.999 The V band magnitude
  54- 59  F6.3  mag     Imag      The I band magnitude
  61- 74  A14   ---     OGLE      OGLE-III identification (G1)
  76- 81  A6    ---     KK09      Kozlowski & Kochanek (2009ApJ...701..508K)
                                   classification
  83- 91  A9    ---     Note      Additional note(s) (1)

Note (1): Includes matches to Simbad objects within 3" radius, as follows:
  Radio     = radio source
  PN        = planetary nebula
  YSO       = young stellar object
  X-ray     = X-ray source
  EclipsBin = eclipsing binary
  none      = no information on the nature of an object


Global notes:

Note (G1): The OGLE-III ID format is smcXXX.Y.ZZZZZZ, where
  * XXX is the field number, 
  * Y   is the chip number, and 
  * ZZZZZZ is the source number (Udalski et al., 2008AcA....58..329U,
     ftp://sirius.astrouw.edu.pl/ogle/ogle3/maps/smc/ )


History:
    From electronic version of the journal

Acknowledgements:
    Szymon Kozlowski, simkoz(at)astrouw.edu.pl
(End)  Szymon Kozlowski [Warsaw Uni. Obs.], Patricia Vannier [CDS]   23-May-2011