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J/ApJ/680/169       SDSS DR5 virial black hole masses        (Shen+, 2008)
Biases in virial black hole masses: an SDSS perspective.
    Shen Y., Greene J.E., Strauss M.A., Richards G.T., Schneider D.P.
   <Astrophys. J., 680, 169-190 (2008)>
   =2008ApJ...680..169S
ADC_Keywords: Surveys ; QSOs ; Stars, masses

Keywords: black hole physics - galaxies: active -
          galaxies: fundamental parameters - galaxies: high-redshift -
          quasars: general - surveys

Abstract:
    We compile black hole (BH) masses for ∼60000 quasars in the redshift
    range 0.1~<z~<4.5 included in the Fifth Data Release of the Sloan
    Digital Sky Survey (Schneider et al. 2007, Cat. VII/252), using virial
    BH mass estimators based on the Hβ, MgII, and CIV emission lines.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table1.dat       200    77429   Catalog of virial mass measurements


See also:
      VII/252 : SDSS-DR5 quasar catalog (Schneider+, 2007)
       II/276 : SDSS Photometric Catalog, Release 5 (Adelman-McCarthy+, 2007)
       http://www.sdss.org : SDSS Home Page


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

   Bytes Format Units    Label   Explanations

   1- 18  A18   ---      SDSS    SDSS-DR5 Object Designation 
                                      (HHMMSS.ss+DDMMSS.s, J2000)
  19- 29  F11.6 deg      RAdeg   Right Ascension in decimal degrees (J2000)
  30- 40  F11.6 deg      DEdeg   Declination in decimal degrees (J2000)
  41- 47  F7.4  ---      z       Redshift
  48- 54  F7.3  ---      imag    PSF i-band apparent magnitude (1)
  55- 62  F8.3  ---      iMAG    PSF i-band absolute magnitude,
                                     K-corrected to z=2
  63- 69  F7.3  [10-7W] logLbol  ?=-9.999 log of bolometric luminosity (erg/s)
  70- 74  I5    ---      Plate   Plate number
  75- 79  I5    ---      Fiber   Fiber identification number
  80- 85  I6    d       ObsDate  MJD date of spectroscopic observation
  86- 97  I12   ---      Tflag   Target selection flag (TARGET photometry) (2)
     100  I1    ---      F       [0/1] FIRST selection flag
     103  I1    ---      R       [0/1] ROSAT selection flag
     106  I1    ---      U       [0/1] Uniform selection flag
     109  I1    ---      B       [0/1] Broad Absoprtion Lines flag
 110-116  I7    km/s     WHb     ?=-9999 Full-width at Half-Maximum of Hβ
 117-125  F9.3  10+37W   L5100   ?=-9.999 Monochromatic luminosity at 5100Å
 126-132  F7.3 [solMass] BHHb    ?=-9.999 Virial mass of black hole estimated
                                    using Hβ (log scale)
 133-139  I7    km/s     WMgII   ?=-9999 Full-width at Half-Maximum of MgII
 140-148  F9.3  10+37W   L3000   ?=-9.999 Monochromatic luminosity at 3000Å
 149-155  F7.3 [solMass] BHMgII  ?=-9.999 Virial mass of black hole estimated
                                    using MgII (log scale)
 156-162  I7    km/s     WCIV    ?=-9999 Full-width at Half-Maximum of CIV
 163-171  F9.3  10+37W   L1350   ?=-9.999 Monochromatic luminosity at 1350Å
 172-178  F7.3 [solMass] BHCIV   ?=-9.999 Virial mass of black hole estimated 
                                    using CIV (log scale)
 179-185  F7.3 [solMass] BHvir   ?=-9.999 Virial mass of black hole (3)
 186-192  I7    km/s    CIVMgII  ?=-9999 CIV-MgII blueshift
 193-200  F8.3  ---      S/N     Mean spectrum signal-to-noise ratio

Note (1): Using TARGET photometry, corrected for Galactic extinction using
     the Schlegel, Finkbeiner & Davis (1998ApJ...500..525S) map. If TARGET
     value is unavailable in the database, using BEST photometry instead
     (101 objects).
Note (2): Target selection flag (from SDSS schema):
     0x00000001 = TARGETQSOHIZ
     0x00000002 = TARGETQSOCAP
     0x00000004 = TARGETQSOSKIRT
     0x00000008 = TARGETQSOFIRST_CAP
     0x00000010 = TARGETQSOFIRST_SKIRT
     0x00000020 = TARGETGALAXYRED
     0x00000040 = TARGET_GALAXY
     0x00000080 = TARGETGALAXYBIG
     0x00000100 = TARGETGALAXYBRIGHT_CORE
     0x00000200 = TARGETROSATA
     0x00000400 = TARGETROSATB
     0x00000800 = TARGETROSATC
     0x00001000 = TARGETROSATD
     0x00002000 = TARGETSTARBHB
     0x00004000 = TARGETSTARCARBON
     0x00008000 = TARGETSTARBROWN_DWARF
     0x00010000 = TARGETSTARSUB_DWARF
     0x00020000 = TARGETSTARCATY_VAR
     0x00040000 = TARGETSTARRED_DWARF
     0x00080000 = TARGETSTARWHITE_DWARF
     0x00100000 = TARGETSERENDIPBLUE
     0x00200000 = TARGETSERENDIPFIRST
     0x00400000 = TARGETSERENDIPRED
     0x00800000 = TARGETSERENDIPDISTANT
     0x01000000 = TARGETSERENDIPMANUAL
     0x02000000 = TARGETQSOFAINT
     0x04000000 = TARGETGALAXYRED_II
     0x08000000 = TARGETROSATE
     0x10000000 = TARGETSTARPN
     0x20000000 = TARGETQSOREJECT
Note (3): on a log scale, computed using
     Hβ for z<0.7; 
     MgII for 0.7<z<1.9;
     C IV for z>1.9.


History:
    From electronic version of the journal
(End)                  Greg Schwarz [AAS], Patricia Vannier [CDS]    08-Sep-2008