J/AJ/135/928 The black hole-bulge relationship (Shen+, 2008)
The black hole-bulge relationship in luminous broad-line active galactic
nuclei and host galaxies.
Shen J., Vanden Berk D.E., Schneider D.P., Hall P.B.
<Astron. J., 135, 928-946 (2008)>
=2008AJ....135..928S 2008AJ....135..928S
ADC_Keywords: Active gal. nuclei ; Magnitudes ; Redshifts ; Spectroscopy
Keywords: galaxies: active - galaxies: bulges - galaxies: nuclei -
quasars: general
Abstract:
We have measured the stellar velocity dispersions (σ*) and
estimated the central black hole (BH) masses for over 900 broad-line
active galactic nuclei (AGNs) observed with the Sloan Digital Sky
Survey. The sample includes objects which have redshifts up to
z=0.452, high-quality spectra, and host galaxy spectra dominated by an
early-type (bulge) component. The AGN and host galaxy spectral
components were decomposed using an eigenspectrum technique. The BH
masses (MBH) were estimated from the AGN broad-line widths, and the
velocity dispersions were measured from the stellar absorption spectra
of the host galaxies. The range of black hole masses covered by the
sample is approximately 106<MBH<109M☉. We find no significant
evolution in the MBH-σ* relation with redshift, up to z∼0.4,
after controlling for possible dependences on other variables.
Interested readers can contact the authors to obtain the eigenspectrum
decomposition coefficients of our objects.
Description:
The broad-line AGNs used for this study were selected from the SDSS
which use a dedicated 2.5m telescope and a pair of multi-object
spectrographs. We define broad-line AGNs here to mean any
extragalactic object with at least one spectroscopic emission line
with a FWHM of at least 1000km/s, regardless of the object luminosity
or morphology.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 138 960 Sample Properties
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See also:
J/ApJ/614/91 : Black hole mass and accretion rate of AGNs (Wu+, 2004)
J/ApJ/613/682 : AGN central masses and broad-line region sizes (Peterson+ 2004)
J/AJ/131/84 : AGNs and host galaxies information (Vanden Berk+, 2006)
II/294 : The SDSS Photometric Catalog, Release 7 (Adelman-McCarthy+, 2009)
http://www.sdss.org/ : SDSS Home Page
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 Source identification (HHMMSS.ss+DDMMDD.s)
20- 25 F6.4 --- z Redshift
27- 32 F6.3 --- imag SDSS apparent i band magnitude
35- 39 F5.3 --- Hfrac [0/1] Host galaxy fractional flux contribution
41- 45 F5.2 deg phi Host galaxy classification angle (2)
47- 52 F6.3 --- S/N The i band spectroscopic signal-to-noise
56- 59 F4.1 --- S/N(H) Host galaxy S/N
61- 66 F6.2 mag gMAG Host galaxy absolute SDSS g band magnitude
68- 72 F5.2 [uW/nm] logL1 Host subtracted AGN monochromatic continuum
luminosity at 5100 Angstroms (erg/s/Å)
74- 78 F5.2 [uW/nm] logL2 Host not subtracted AGN monochromatic
continuum luminosity at 5100 Angstroms
80- 84 F5.1 km/s sigma ?=0 Stellar velocity dispersion uncorrected
for finite fiber diameter
86- 90 F5.1 km/s Csigma ?=0 Corrected for finite fiber diameter
stellar velocity dispersion
92- 95 F4.1 km/s e_sigma ?=0 Formal uncertainty in sigma
97-101 F5.2 10+3km/s FWHM.b ?=0 Hβ Full-Width at Half-Maximum
103-106 F4.2 10+3km/s e_FWHM.b ?=0 Formal uncertainty in FWHM-Hb
108-112 F5.2 10+3km/s FWHM.a ?=0 Hα Full-Width at Half-Maximum
114-117 F4.2 10+3km/s e_FWHM.a ?=0 Formal uncertainty in FWHM-Ha
120-123 F4.2 [solMass] logM ?=0 Log of the Black Hole mass
126-129 F4.2 [solMass] e_logM ?=0 Formal uncertainty in logM (1)
131 A1 --- f_logM [*] '*' if logM derived from FWHM(Hα).
133-138 F6.4 --- Lratio ?=0 Bolometric to Eddington luminosity ratio
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Note (1): The uncertainties are formal uncertainties, actual uncertainties
are probably dominated by systematics in broad-line region (BLR) geometry.
Note (2): the galaxy classification angle φ is defined in Vanden Berk
et al. (2006AJ....131...84V 2006AJ....131...84V) and Yip (2004AJ....128..585Y 2004AJ....128..585Y); it must be
in the range 0-15° for bulge-dominated galaxies.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 25-Jun-2010