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J/ApJ/641/L21  Black hole mass and velocity dispersion relation  (Greene+, 2006)
The MBH-σ* relation in local active galaxies.
    Greene J.E., Ho L.C.
   <Astrophys. J., 641, L21-L24 (2006)>
   =2006ApJ...641L..21G
ADC_Keywords: Active gal. nuclei ; Velocity dispersion ; Redshifts

Keywords: galaxies: active - galaxies: kinematics and dynamics -
          galaxies: nuclei - galaxies: Seyfert

Abstract:
    We examine whether active galaxies obey the same relation between
    black hole mass and stellar velocity dispersion as inactive systems,
    using the largest published sample of velocity dispersions for active
    nuclei to date. The combination of 56 original measurements with
    objects from the literature not only increases the sample from the 15
    considered previously to 88 objects but allows us to cover an
    unprecedented range in both stellar velocity dispersion (30-268km/s)
    and black hole mass (105-108.6M☉).

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table1.dat        82       88   Sample properties


See also:
  http://www.sdss.org : SDSS Home Page
  J/ApJ/632/799       : NGC4395 light curves (Peterson+, 2005)
  J/ApJ/613/682       : AGN central masses and broad-line region sizes
                                                       (Peterson+, 2004)


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

   Bytes Format Units       Label   Explanations

   1- 24  A24   ---         Name    Source identification
  26- 33  F8.6  ---         z       Redshift
  35- 39  F5.1  km/s        sigma*  Stellar velocity dispersion σ_*_ (1)
  41- 44  F4.1  km/s      e_sigma*  Formal uncertainty in sigma*
      46  A1    ---       n_sigma*  Origin of σ_*_ measurement (2)
  48- 51  I4    km/s        FWHM    ? Hα Full-Width at Half-Maximum
  53- 56  I4    km/s        e_FWHM  ? Formal uncertainty in FWHM
  58- 62  F5.2  [10-7W]     logL    ? Log of Hα luminosity in erg/s
  64- 67  F4.2  [10-7W]     e_logL  ? Formal uncertainty in logL
  69- 72  F4.2  [solMass]   logM    Log of the Black Hole mass (3)
  74- 77  F4.2  [solMass]   E_logM  ? Formal upper limit uncertainty in logM
  79- 82  F4.2  [solMass]   e_logM  Formal uncertainty (or lower limit) in logM

Note (1): From the CaII triplet (λλ8498,8542,8662Å)
          unless otherwise noted.
Note (2): Origin of σ* measurement, defined as follows:
      a = Measured using the Fe region (5250-5820Å);
      b = Measured (at least in part) using the MgIb triplet
          (λλ5167,5173,5184Å) region.
Note (3): Actual uncertainties in MBH are dominated by systematics in
     broad-line region geometry. Sources from Barth et al.
     (2005ApJ...619L.151B) are included below the SDSS sample from this
     paper; for consistency the BH masses were redetermined from the DR3
     spectra using the Hα formalism. However, in general our
     FWHMHα and MBH values are consistent with those in Barth et
     al., and none of our conclusions are altered if we use the masses from
     that study. We further include the reverberation-mapped sources, with
     σ* measurements representing the weighted mean of values from
     Onken et al. (2004ApJ...615..645O) and Nelson et al.
     (2004ApJ...615..652N), and BH masses derived from the Hβ lags and
     FWHM presented in Peterson et al. (2004, Cat. J/ApJ/613/682). For
     completeness, we also include POX 52 (Barth et al.
     2004ApJ...607...90B) and NGC 4395 (σ* from Filippenko & Ho
     2003ApJ...588L..13F, BH mass from Peterson et al. 2005, Cat.
     J/ApJ/632/799).

    MBH=(2.0+0.4-0.3)*106M☉(LHα/1042erg/s)0.55±0.02*
    (FWHMHα/103km/s)2.06±0.06 (Greene & Ho 2005ApJ...630..122G).


History:
    From electronic version of the journal
(End)                   Greg Schwarz [AAS], Marianne Brouty [CDS]    26-Jul-2007