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J/AJ/126/1720       ugriz and Hα of double-peaked AGN    (Strateva+, 2003)
Double-peaked low-ionization emission lines in active galactic nuclei.
    Strateva I.V., Strauss M.A., Hao L., Schlegel D.J., Hall P.B., Gunn J.E.,
    Li L.-X., Ivezic Z., Richards G.T., Zakamska N.L., Voges W., Anderson S.F.,
    Lupton R.H., Schneider D.P., Brinkmann J., Nichol R.C.
   <Astron. J. 126, 1720 (2003)>
   =2003AJ....126.1720S
ADC_Keywords: Active gal. nuclei ; Photometry, SDSS ; Spectroscopy

Keywords: galaxies: active - accretion disks


Abstract:
    We present a new sample of 116 double-peaked Balmer line active
    galactic nuclei (AGNs) selected from the Sloan Digital Sky Survey.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table1.dat       114       85   Double-peaked Hα AGN sample:
                              coordinates and apparent magnitudes
table2.dat       114       31   Double-peaked Hα auxiliary sample:
                              coordinates and apparent magnitudes
table3.dat        75      138   Hα profiles: line parameter measurements
table5.dat        69      116   Optical, radio, and X-Ray luminosity and
                              spectral indices


See also:
  J/AJ/123/567  : SDSS quasar catalog, I: Early Data Release (Schneider+, 2002)
  J/AJ/126/2579 : SDSS quasar catalog. II. First data release (Schneider+, 2003)


Byte-by-byte Description of file: table1.dat table2.dat

   Bytes Format Units   Label     Explanations

   1-  4  A4    ---     ---       [SDSS]
   6- 24  A19   ---     SDSS      SDSS designation (JHHMMSS.ss+DDMMSS.s)
  26- 35  A10   ---     sSDSS     Short SDSS designation
  38- 43  F6.4  ---     z         Redshift
  45- 49  F5.2  mag     umag      SDSS u magnitude
  51- 55  F5.2  mag     gmag      SDSS g magnitude
  57- 61  F5.2  mag     rmag      SDSS r magnitude
  63- 67  F5.2  mag     imag      SDSS i magnitude
  69- 73  F5.2  mag     zmag      SDSS z magnitude
  75-114  A40   ---     Com       Comments


Byte-by-byte Description of file: table3.dat

   Bytes Format Units       Label    Explanations

   1-  4  A4    ---         ---      [SDSS]
   6- 15  A10   ---         sSDSS    Short SDSS name (SDSS JHHMM+DDMM)
  17- 21  I5    d           MJD      Modified Jullian day (JD-2400000.5)
  23- 27  I5    10-20W/m2   FHa      Hα broad line flux in
                                      units of 10-17erg/s/cm2
  29- 33  I5    km/s        FWHM     Hα full width at half-maximum
  35- 39  I5    km/s        FWHMc    Hα FWHM centroid with respect to
                                      narrow-line Hα
  41- 45  I5    km/s        FWQM     Hα full width at quarter-maximum
  47- 51  I5    km/s        FWQMc    Hα FWQM centroid with respect to
                                       narrow-line Hα
  53- 57  F5.1 10-19W/m2/nm Hred     Height of red peak of broad Hα line
                                       in units of 10-16erg/s/cm2/nm
  59- 63  I5    km/s        Wred     Position of red peak with respect to
                                       narrow Hα line
  65- 69  F5.1 10-19W/m2/nm Hblue    Height of blue peak of broad Hα line
                                       in units of 10-16erg/s/cm2/nm
  71- 75  I5    km/s        Wblue    Position of blue peak with respect to
                                      narrow Hα line


Byte-by-byte Description of file: table5.dat

   Bytes Format Units   Label     Explanations

   1-  4  A4    ---     ---       [SDSS]
   6- 15  A10   ---     sSDSS     Short SDSS name (SDSS JHHMM+DDMM)
  17- 21  F5.2  10+37W  Lu        SDSS u-band luminosity (2)
  23- 27  F5.2  10+37W  Lg        SDSS g-band luminosity (2)
  29- 33  F5.2  10+37W  Lr        SDSS r-band luminosity (2)
  35- 39  F5.2  10+37W  Li        SDSS i-band luminosity (2)
  41- 45  F5.2  10+37W  Lz        SDSS z-band luminosity (2)
  47- 52  F6.2  10+37W  LXray     ? X-ray (0.1-2.0keV) unobscured luminosity (2)
  54- 60  E7.2  10+37W  L20cm     ? Radio (20 cm) luminosity (2)
  62- 64  F3.1  ---     Sp+Index  ? X-ray (2.0keV) to optical (250nm)
                                     spectral index
  66- 69  F4.2  ---     Sp-Index  ? Radio (20cm) to optical (250nm)
                                     spectral index

Note (2): The luminosities are computed using Ω_λ=0.73,
            Ωm=0.27, flat cosmology, with H0=72km/s/Mpc


History:
    From electronic version of the journal
(End)                    Greg Schwarz [AAS], Patricia Bauer [CDS]    21-Nov-2003