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 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:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 82 88 Sample properties
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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
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Bytes Format Units Label Explanations
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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
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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 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 2004ApJ...615..645O) and Nelson et al.
(2004ApJ...615..652N 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 2004ApJ...607...90B) and NGC 4395 (σ* from Filippenko & Ho
2003ApJ...588L..13F 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 2005ApJ...630..122G).
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 26-Jul-2007