J/ApJS/193/28   Galaxy survey around 20 UV-bright quasars     (Prochaska+, 2011)
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Probing the IGM/Galaxy connection.
IV. The LCO/WFCCD galaxy survey of 20 fields surrounding UV-bright quasars.
    Prochaska J.X., Weiner B., Chen H.-W., Cooksey K.L., Mulchaey J.S.
   <Astrophys. J. Suppl. Ser., 193, 28 (2011)>
   =2011ApJS..193...28P
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ADC_Keywords: Redshifts ; Spectroscopy ; Galaxies, photometry ; QSOs
Keywords: galaxies: statistics - intergalactic medium -
          quasars: absorption lines

Abstract:
    We publish the survey for galaxies in 20 fields containing ultraviolet
    bright quasars (with z_em_~0.1-0.5) that can be used to study the
    association between galaxies and absorption systems from the low-z
    intergalactic medium (IGM). The survey is magnitude limited
    (R~19.5mag) and highly complete out to 10' from the quasar in each
    field. It was designed to detect dwarf galaxies (L~0.1L*) at an impact
    parameter {rho}~1Mpc (z=0.1) from a quasar. The complete sample (all
    20 fields) includes R-band photometry for 84718 sources and confirmed
    redshifts for 2800 sources. This includes 1198 galaxies with
    0.005<z<(z_em_-0.01) at a median redshift of 0.18, which may
    associated with IGM absorption lines. All of the imaging was acquired
    with cameras on the Swope 40" telescope and the spectra were obtained
    via slit mask observations using the WFCCD spectrograph on the Dupont
    100" telescope at Las Campanas Observatory.

Description:
    We selected 20 fields accessible from Las Campanas Observatory (LCO)
    (DEC<25{deg}) surrounding UV-bright quasars. These quasars and their
    UV spectroscopic data sets are summarized in Table 1.
    All of the fields in our survey were imaged with the Swope 40"
    telescope using a direct imaging camera in B and R filter. The data
    were obtained in a series of dithered exposures intended to map at
    least a 20'x20' FOV, between 2000 Oct 26 and 2003 Apr 8.
    We performed multi-slit spectroscopy on each field with the WFCCD
    spectrometer using the blue grism and the Tek 5 CCD, between 2001 Apr
    17 and 2003 Jun 6.

File Summary:
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 FileName   Lrecl  Records   Explanations
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ReadMe         80        .   This file
table1.dat    103       20   Summary of fields surveyed
table4.dat    108     1458   Summary of galaxies at z<z_em_+0.01
table5.dat     71     2396   Q0026+1259: object summary
table6.dat     71     3541   Ton S 180: object summary
table7.dat     71     2420   Ton S 210: object summary
table8.dat     71     2983   PKS0312-770: object summary
table9.dat     71     3891   PKS0558-504: object summary
table10.dat    71     2608   PG1004+130: object summary
table11.dat    71     3206   HE1029-140: object summary
table12.dat    71     3547   PG1116+215: object summary
table13.dat    71     4184   PG1211+143: object summary
table14.dat    71     5008   PG1216+069: object summary
table15.dat    71     5293   3C273: object summary
table16.dat    71     2817   Q1230+095: object summary
table17.dat    71     3530   PKS1302-102: object summary
table18.dat    71     3030   PG1307+085: object summary
table19.dat    71     4080   MRK1383: object summary
table20.dat    71     3823   Q1553+113: object summary
table21.dat    71     7846   PKS2005-489: object summary
table22.dat    71     3569   FJ2155-092: object summary
table23.dat    71     3833   PKS2155-304: object summary
figures/*       .       20   Galaxies spectra in JPG format
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See also:
 J/MNRAS/392/1181 : BV(RI)c photometry of 3C 273 (Dai+, 2009)
 J/ApJ/676/262    : PKS1302-102 intergalactic absorption system (Cooksey+, 2008)
 J/ApJ/679/194    : Low-z intergalactic medium. III. (Danforth+, 2008)
 J/A+A/469/503    : VRIJHK observations of PKS 2155-304 (Dolcini+, 2007)
 J/ApJ/643/680    : Imaging and spectroscopy around PKS 0405-123 (Prochaska+,
                    2006)
 J/ApJ/617/718    : Atomic data and EW for PKS 0405-123 (Prochaska+, 2004)
 J/ApJS/155/351   : Absorption toward PG 1116+215 (Sembach+, 2004)
 http://www.ucolick.org/~xavier/WFCCDOVI/ : WFCCD OVI database online

Byte-by-byte Description of file: table1.dat
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   Bytes Format Units   Label     Explanations
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   1- 11  A11   ---     Field     Quasar identification
  13- 14  I2    h       RAh       Hour of right ascension (J2000)
  16- 17  I2    min     RAm       Minute of right ascension (J2000)
  19- 22  F4.1  s       RAs       Second of right ascension (J2000)
      24  A1    ---     DE-       Sign of the declination (J2000)
  25- 26  I2    deg     DEd       Degree of declination (J2000)
  28- 29  I2    arcmin  DEm       Arcminute of declination (J2000)
  31- 32  I2    arcsec  DEs       Arcsecond of declination (J2000)
  34- 38  F5.3  ---     ze        Emission redshift
  40- 83  A44   ---     Set       HST UV spectroscopic data sets
  85- 87  I3    ks      Tint      ? FUSE total integration time
  89- 92  F4.1  mag     Rmax      Maximum R-band magnitude
  94- 96  I3    ---     Nspec     Number of spectroscopically determined galaxy
                                  redshifts for objects with 0.005<z<z_em_
  98-100  I3    ---     C5        Completeness percent of the spectroscopic
                                  survey in each field to R=19.5mag for a
                                  radius of 5'
 102-103  I2    ---     C10       Completeness percent of the spectroscopic
                                  survey in each field to R=19.5mag for a
                                  radius of 10'
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Byte-by-byte Description of file: table4.dat
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   Bytes Format Units   Label     Explanations
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   1- 11  A11   ---     Field     Field name
  13- 43  A31   ---     zRange    Range in redshift considered
  45- 61  A17   ---     ID        Galaxy identification (Field_NNNNN)
  63- 64  I2    h       RAh       Hour of right ascension (J2000)
  66- 67  I2    min     RAm       Minute of right ascension (J2000)
  69- 72  F4.1  s       RAs       Second of right ascension (J2000)
      74  A1    ---     DE-       Sign of the declination (J2000)
  75- 76  I2    deg     DEd       Degree of declination (J2000)
  78- 79  I2    arcmin  DEm       Arcminute of declination (J2000)
  81- 82  I2    arcsec  DEs       Arcsecond of declination (J2000)
  84- 90  F7.5  ---     z         Galaxy redshift
  92- 96  F5.2  ---     Lstar     Relative luminosity (1)
  98-102  I5    ---     rho       Impact parameter (2)
 104-108  A5    ---     Type      Galaxy type (Early, Late or Unkn) (3)
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Note (1): As measured from the apparent R-band magnitude and redshift
     relative to L^*^.  See text for a detailed description.
Note (2): In physical distance. Units are h_72_^-1^kpc.
Note (3): The galaxy type is a crude assessment of the spectrum based 
     on a fit of eigenfunctions. See text for a detailed description.
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Byte-by-byte Description of file: table[5-9].dat table1[0-9].dat table2[0-3].dat
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   Bytes Format Units     Label     Explanations
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   1-  4  I4    ---       Seq       Galaxy identification
   6-  7  I2    h         RAh       Hour of right ascension (J2000)
   9- 10  I2    min       RAm       Minute of right ascension (J2000)
  12- 15  F4.1  s         RAs       Second of right ascension (J2000)
      17  A1    ---       DE-       Sign of the declination (J2000)
  18- 19  I2    deg       DEd       Degree of declination (J2000)
  21- 22  I2    arcmin    DEm       Arcminute of declination (J2000)
  24- 25  I2    arcsec    DEs       Arcsecond of declination (J2000)
  27- 31  F5.2  mag       Bmag      ? B band magnitude (not for table 8)
  33- 37  F5.2  mag     e_Bmag      ? Uncertainty in Bmag (not for table 8)
  39- 43  F5.2  mag       Rmag      ? R band magnitude
  45- 49  F5.2  mag     e_Rmag      ? Uncertainty in Rmag
  51- 54  F4.2  ---       S/G       SExtractor star/galaxy classifier (1)
  56- 60  F5.1  arcsec2   Area      Source area
      62  I1    ---       flag      Binary source flag (2)
  64- 71  F8.5  ---       z         ? Spectroscopic redshift
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Note (1): Values near unity indicate a stellar-like point-spread function.
Note (2): This binary flag is the sum of the following codes:
    1 = Survey target (photometry);
    2 = Spectrum taken;
    4 = Redshift measured.
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Nomenclature note:
    Objects are <[PWC2011] JHHMMSS.s+DDMMSS> in Simbad.

History:
    From electronic version of the journal

References:
    Prochaska et al. Paper I.   2004ApJ...617..718P  Cat. J/ApJ/617/718
    Chen et al.      Paper II.  2005ApJ...629L..25C
    Prochaska et al. Paper III. 2006ApJ...643..680P  Cat. J/ApJ/643/680
    Prochaska et al. Paper IV.  2011ApJS..193...28P  Cat. J/ApJS/193/28
    Prochaska et al. Paper V.   2011ApJ...740...91P  Cat. J/ApJ/740/91

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(End)                 Greg Schwarz [AAS], Emmanuelle Perret [CDS]    19-May-2011