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J/ApJ/525/127  RGB sample of BL Lacertae objects  (Laurent-Muehleisen+, 1999)
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The RGB sample of intermediate BL Lacertae objects
    Laurent-Muehleisen S.A., Kollgaard R.I., Feigelson E.D., Brinkmann W.,
    Siebert J.
   <Astrophys. J. 525, 127 (1999)>
   =1999ApJ...525..127L
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ADC_Keywords: BL Lac objects ; Galaxies, radio ; Surveys ; X-ray sources
Keywords: BL Lacertae objects: general - galaxies: active - radio continuum:
          galaxies - surveys - X-rays: galaxies

Abstract:
    Combining newly identified and previously known BL Lacertae objects
    from the ROSAT All-Sky Survey-Green Bank (RGB) catalog, we present a
    sample of 127 BL Lacertae objects, the largest ever derived from a
    single uniform survey. A complete sample of 33 objects brighter than
    O=18.0 mag is also presented. These samples are compared to other
    known BL Lac samples and are generally found to exhibit properties
    intermediate between those of the previously disparate classes of
    high- and low-energy-peaked BL Lacertae objects (HBLs and LBLs,
    respectively). This result is most dramatic in the distribution of the
    X-ray to radio logarithmic flux ratios, where the RGB BL Lacertae
    objects are shown to peak precisely where the sharp dichotomy between
    the two subclasses was previously seen.

File Summary:
--------------------------------------------------------------------------------
 FileName      Lrecl  Records   Explanations
--------------------------------------------------------------------------------
ReadMe            80        .   This file
table2.dat       128      127   RGB BL Lac Source Properties
refs.dat          86       24   References to table2.dat
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Byte-by-byte Description of file: table2.dat
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   Bytes Format Units     Label      Explanations
--------------------------------------------------------------------------------
   1- 14  A14   ---       Name       Object ROSAT-Green Bank Survey name
  16- 17  A2    ---     f_Name       [bc ] Flag on Name (1)
      19  A1    ---       Sample     [S] Indicates part of the sample but not a
                                      definitive BL Lac object
  21- 38  A18   ---       OName      Other name
  40- 41  I2    h         RAh        Right ascension (J2000)
  43- 44  I2    min       RAm        Right ascension (J2000)
  46- 50  F5.2  s         RAs        Right ascension (J2000)
      51  A1    ---       DE-        Declination sign
  52- 53  I2    deg       DEd        Declination (J2000)
  55- 56  I2    arcmin    DEm        Declination (J2000)
  58- 61  F4.1  arcsec    DEs        Declination (J2000)
      63  A1    ---     l_SCore      Limit on SCore
  64- 67  I4    mJy       SCore      5Ghz radio flux of the core
  69- 74  F6.2 10-12mW/m2 XFlux      X-ray flux in the ROSAT 0.1-2.4 keV band
                                      (in units of 10^-12^ ergs/cm^2^/s)
  76- 79  F4.1  mag       Omag       Optical magnitude from the Palomar
                                      Observatory Sky Survey I
  82- 83  A2    ---     f_Omag       [ad] Flag on the optical magnitudes (2)
  88- 91  F4.2  ---       Sp-Index   ? X-ray spectral energy index
      93  A1    ---     l_Sp-Index   Limit on Sp-Index
  94- 97  F4.2  ---       Sp-IndexRO Radio - Optical spectral index
  99-102  F4.2  ---       Sp-IndexXO Optical - X-ray spectral index
     104  A1    ---     l_z          Limit on z
 105-110  F6.4  ---       z          ? Redshift
     111  A1    ---     n_z          [ef] Notes on z (3)
     113  A1    ---     u_z          [?] Indicates an uncertain redshift
                                      measurement
 115-132  A18   ---     r_Name       Reference numbers to the data in table
                                      (see refs.dat)
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Note (1):
    b = ID Uncertain; see Table 3
    c = From low radio resolution sample
Note (2):
    a = Optical magnitude converted from another band to equivalent O mag
        ({alpha}_opt_ = 1.0); see Table 3
    d = Optical magnitude corrected to include AGN component only
Note (3):
    e = New redshift from E. S. Perlman, J. F. Schachter, & J. T. Stocke 1998,
        private communication
    f = Redshift of 0.135 reported in Nass et al. (1996A&A...309..419N) is
        incorrect (N. Bade 1998, private communication)
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Byte-by-byte Description of file: refs.dat
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   Bytes Format Units   Label     Explanations
--------------------------------------------------------------------------------
   1-  2  I2    ---     RefNum    Reference number from table2.dat
   4- 22  A19   ---     BibCode   Reference Bibcode
  26- 95  A70   ---     Text      References to table2.dat
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History:
    From the ApJ electronic edition

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(End)                                          Greg Schwarz [AAS]    16-Mar-2000