J/ApJ/919/62   AGNs with sp. from SDSS & radio obs. from WENSS   (Runnoe+, 2021)
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Orientation and accretion in a representative sample of active galactic nuclei.
    Runnoe J.C.,Boroson T.
   <Astrophys. J., 919, 62 (2021)>
   =2021ApJ...919...62R
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ADC_Keywords: Active gal. nuclei; Spectra, optical; Radio sources; Redshifts;
              Surveys
Keywords: Quasars ; Radio loud quasars ; Radio active galactic nuclei ;
          Surveys

Abstract:
    We highlight a representative sample of active galactic nuclei
    selected independent of orientation. The defining characteristic of
    the selection is sophisticated matching between the 0.1<z<0.6 Sloan
    Digital Sky Survey quasars from the Seventh Data Release to the
    Westerbork Northern Sky Survey at 325MHz and the subsequent
    application of a spatially integrated radio spectral luminosity
    density cut. The resulting sample is complete down to the limiting
    luminosity and unbiased by orientation. Compared to orientation
    samples in the literature this approach yields less bias with
    redshift, relatively more lobe-dominated sources including those with
    radio lobes and no visible core, and a distribution of radio core
    dominance that is consistent with expectations from a uniform
    distribution of inclinations with solid angle. We measure properties
    of the optical spectra, and use the sample to investigate the
    orientation dependence of the velocity width of the broad H{beta}
    emission line. We recover the known orientation dependence, but the
    sharp envelope of previous studies where only edge-on sources display
    the broadest lines, is absent. Scatter in this diagram is not
    attributable solely to black hole mass, Eddington ratio, or
    contamination in the sample from compact steep-spectrum sources. A
    physical framework for quasar beaming and a disk-like broad-line
    region can describe the representative sample when it is expanded to
    include additional parameters, in particular jet properties and the
    broad-line region velocity field. These points serve to illustrate the
    critical role of sample selection in the interpretation of observable
    properties as indicators of physical parameters of quasar central
    engines.

Description:
    We selected objects from the seventh data release (DR7) quasar catalog
    (Schneider+ 2010, VII/260 ; superseded by VII/289) of SDSS. We first
    applied a redshift cut of 0.1<z<0.6 to ensure complete spectral
    coverage of the H{beta} region for all sources.

    We used a sophisticated procedure to match members of the SDSS DR7
    quasar catalog to the Westerbork Northern Sky Survey (WENSS;
    Rengelink+ 1997, J/A+AS/124/259), a 325MHz survey where anisotropic
    beaming effects are minimized, and applied a total radio luminosity
    cut of log(L_325_)<33.0erg/s/Hz.

    The result is a sample of 125 AGN with optical spectra and radio
    observations.

    In order to put this new sample in context, we compare it to a variety
    of orientation samples from the literature. See Section 3.

File Summary:
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 FileName  Lrecl  Records  Explanations
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ReadMe        80        .  This file
table1.dat   131      125  Sample and radio properties
table2.dat    56      125  Spectral properties
table3.dat    70       80  WB86 (Wills & Browne 1986ApJ...302...56W)
                            sample properties (section 3.1)
table4.dat    60       52  SED sample (Shang+ 2011ApJS..196....2S) properties
                            (section 3.2)
table5.dat    70      386  B15 (Brotherton+ 2015, J/MNRAS/454/3864) sample
                            properties (section 3.3)
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See also:
 VIII/2  : Molonglo Reference Catalog of Radio Sources (Large+ 1981)
 VIII/42 : Texas Survey of radio sources at 365MHz (Douglas+ 1996)
 VIII/65 : 1.4GHz NRAO VLA Sky Survey (NVSS) (Condon+ 1998)
 VII/260 : The SDSS-DR7 quasar catalog (Schneider+, 2010)
 VII/289 : SDSS quasar catalog, sixteenth data release (DR16Q) (Lyke+, 2020)
 V/154   : Sloan Digital Sky Surveys (SDSS), Release 16 (DR16) (Ahumada+, 2020)
 J/MNRAS/204/151  : Bright radio sources at 178 MHz (3CRR) (Laing+ 1983)
 J/A+AS/124/259   : Westerbork Northern Sky Survey I. (Rengelink+ 1997)
 J/A+A/417/515    : I Zw 1 unusual emission line spectrum (Veron-Cetty+, 2004)
 J/AJ/131/666     : Double-lobed radio quasars from the SDSS (de Vries+, 2006)
 J/A+A/520/A62    : Radio-optical scrutiny of compact AGN (Arshakian+, 2010)
 J/AJ/141/182     : Radio and optical properties of QSOs (Kimball+, 2011)
 J/ApJS/194/45    : QSO properties from SDSS-DR7 (Shen+, 2011)
 J/MNRAS/454/3864 : Orientation & QSO BH mass estimation (Brotherton+ 2015)
 J/ApJS/221/7     : SDSS QSOs at z<0.8. II. New sp. obs. (Runnoe+, 2015)
 J/ApJS/238/9     : Giant radio sources known to date (Kuzmicz+, 2018)
 J/ApJ/904/179    : VLA observations of 147 radio-loud Quasars (Maithil+, 2020)

Byte-by-byte Description of file: table1.dat
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   Bytes Format Units        Label      Explanations
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  1-  18 A18    ---          SDSS       SDSS DR7 name (HHMMSS.ss+DDMMSS.s;
                                         J2000)
 20-  25 F6.4   ---          zspec      [0.15/0.6] SDSS DR7 spectroscopic
                                         redshift
 27-  31 F5.2   [10-7W]      logLL5100  [41.27/46.3]? Logarithm of the
                                         monochromatic luminosity
                                         at 5100{AA} in erg/s
 33-  36 F4.2   [10-7W]    e_logLL5100  [0.05/0.12]? Mean error on logLL5100
      38 A1     ---        l_FIRSTcore  Limit flag on FIRSTcore
 40-  46 F7.2   mJy          FIRSTcore  [0.17/6051] FIRST core spectral flux
                                         density at 1.4GHz
 48-  53 F6.2   mJy        e_FIRSTcore  [0.14/303] Mean error on FIRSTcore
      55 A1     ---        n_FIRSTcore  Note on FIRSTcore, see Note (1)
 57-  63 F7.2   mJy          FIRSTtot   [16.44/6073] FIRST spatially integrated
                                         spectral flux density at 1.4GHz
 65-  70 F6.2   arcsec       FIRSTsize  [0.28/318]? Angular size from FIRST at
                                         1.4GHz
 72-  77 F6.1   mJy          NVSStot    [27/8102] NVSS spatially integrated
                                         spectral flux density at 1.4GHz
 79-  83 I5     mJy          WENSStot   [82/30410] WENSS spatially integrated
                                         spectral flux density at 325MHz
 85-  88 I4     mJy        e_WENSStot   [6/1216] Mean error on WENSStot
      90 A1     ---        l_logLc      Limit flag on logLc
 92-  96 F5.2   [10-7W/Hz]   logLc      [30/34.8] Logarithm of the core
                                         luminosity {nu}L_{nu}_ at 5GHz
                                         k-corrected from FIRST in erg/s/Hz
 98- 101 F4.2   [10-7W/Hz] e_logLc      [0.02/0.4] Mean error on logLc
103- 107 F5.2   [10-7W/Hz]   logL325    [33/35.2] Logarithm of the luminosity
                                         nu L_nu at 325MHz in erg/s/Hz
109- 112 F4.2   [10-7W/Hz] e_logL325    [0.02/0.04] Mean error on logL325
     114 A1     ---        l_logRv      Limit flag on logRv
116- 119 F4.2   ---          logRv      [0.25/4.5]? Radio core dominance
121- 124 F4.2   ---        e_logRv      [0.06/0.5]? Mean error on logRv
126- 131 F6.3   ---          alphar     [-1.1/0.2] Radio spectral index between
                                         325MHz and 1.4GHz
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Note (1):  FIRST core component is estimated. See Section 2.2.
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Byte-by-byte Description of file: table2.dat
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   Bytes Format Units   Label   Explanations
--------------------------------------------------------------------------------
   1- 18 A18    ---     SDSS    SDSS DR7 name (HHMMSS.ss+DDMMSS.s; J2000)
  20- 24 I5     km/s    HbFWHM  [1587/29140]? Broad H-beta full-width
                                 at half-maximum
  26- 29 I4     km/s  e_HbFWHM  [75/3804]? Mean error on HbFWHM
  31- 37 F7.1   0.1nm   HbEW    [-241/16389]? Broad H-beta equivalent width (2)
  39- 44 F6.1   0.1nm e_HbEW    [-74.3/3091]? Mean error on HbEW
  46- 52 F7.1   0.1nm   FeIIEW  [0/11825]? Broad optical FeII equivalent
                                 width (2)
  54- 56 F3.1   0.1nm e_FeIIEW  [2.8/4.6]? Mean error on FeIIEW
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Note (2): Equivalent widths are given in the rest frame.
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Byte-by-byte Description of file: table3.dat
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   Bytes Format Units    Label     Explanations
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   1-  8 A8     ---      QSO       QSO name (HHMM+DDd; B1950)
  10- 11 I2     h        RAh       Hour of Right Ascension (J2000)
  13- 14 I2     min      RAm       Minute of Right Ascension (J2000)
  16- 19 F4.1   s        RAs       Second of Right Ascension (J2000)
  21- 21 A1     ---      DE-       Sign of the Declination (J2000)
  22- 23 I2     deg      DEd       Degree of Declination (J2000)
  25- 26 I2     arcmin   DEm       Arcminute of Declination (J2000)
  28- 31 F4.1   arcsec   DEs       Arcsecond of Declination (J2000)
  33- 38 F6.4   ---      zspec     [0.03/0.96] Spectroscopic redshift
  40- 44 I5     km/s     HbFWHM    [1800/13500] Broad H-beta full width
                                    at half maximum
  46- 51 F6.3  [10-7W]   logL325   [30.6/36.1]? Logarithm of the luminosity
                                    {nu}L_{nu}_ at 325MHz in erg/s
  53- 57 F5.3  [10-7W] e_logL325   [0.001/0.2]? Mean error on logL325
  59- 63 A5     ---    n_logL325   Note on logL325 (1)
  65- 65 A1     ---    l_logRv     Limit flag on radio core dominance
  67- 70 F4.2   ---      logRv     [0.6/4.2]? Radio core dominance
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Note (1): Note on logL325 as follows:
    TEXAS = Douglas et al. (1996AJ....111.1945D ; VIII/42);
    VLBI  = Arshakian et al. (2010, J/A+A/520/A62);
    WENSS = Rengelink et al. (1997, J/A+AS/124/259);
    MOL   = Large et al. (1981MNRAS.194..693L ; VIII/2).
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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-  7 A7     ---      Name      Source name
   9- 10 I2     h        RAh       Hour of Right Ascension (J2000)
  12- 13 I2     min      RAm       Minute of Right Ascension (J2000)
  15- 18 F4.1   s        RAs       Second of Right Ascension (J2000)
  20- 20 A1     ---      DE-       Sign of the Declination (J2000)
  21- 22 I2     deg      DEd       Degree of Declination (J2000)
  24- 25 I2     arcmin   DEm       Arcminute of Declination (J2000)
  27- 30 F4.1   arcsec   DEs       Arcsecond of Declination (J2000)
  32- 37 F6.4   ---      zspec     [0.15/1.41] Spectroscopic redshift
  39- 43 I5     km/s     HbFWHM    [3095/20925]? Broad H-beta full width
                                    at half maximum
  45- 49 F5.2  [10-7W]   logL325   [33.17/36.5] Logarithm of the luminosity
                                    {nu}L_{nu}_ at 325MHz in erg/s
  51- 54 F4.2  [10-7W] e_logL325   [0.01/0.04] Mean error on logL325
  56- 60 F5.2   ---      logRv     [-0.04/4.32] Radio core dominance
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Byte-by-byte Description of file: table5.dat
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   Bytes Format Units    Label     Explanations
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   1- 18 A18    ---      SDSS      SDSS name (HHMMSS.ss+DDMMSS.s; J2000)
  20- 21 I2     h        RAh       Hour of Right Ascension (J2000)
  23- 24 I2     min      RAm       Minute of Right Ascension (J2000)
  26- 29 F4.1   s        RAs       Second of Right Ascension (J2000)
  31- 31 A1     ---      DE-       Sign of the Declination (J2000)
  32- 33 I2     deg      DEd       Degree of Declination (J2000)
  35- 36 I2     arcmin   DEm       Arcminute of Declination (J2000)
  38- 41 F4.1   arcsec   DEs       Arcsecond of Declination (J2000)
  43- 48 F6.4   ---      zspec     [0.08/0.75] Spectroscopic redshift
  50- 54 I5     km/s     HbFWHM    [1376/28298] Broad H-beta full width
                                    at half maximum
  56- 60 F5.2  [10-7W]   logL325   [31/35.6]? Logarithm of the luminosity
                                    {nu}L_{nu}_ at 325MHz in erg/s
  62- 65 F4.2  [10-7W] e_logL325   [0.02/0.21]? Mean error on logL325
  67- 70 F4.2   ---      logRv     [0.65/4.29] Radio core dominance
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History:
    From electronic version of the journal

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(End)                    Prepared by [AAS], Emmanuelle Perret [CDS]  23-Jan-2023