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J/ApJ/667/131       Mass function of active black holes      (Greene+, 2007)

The mass function of active black holes in the Local Universe. Greene J.E., Ho L.C. <Astrophys. J., 667, 131-148 (2007)> =2007ApJ...667..131G
ADC_Keywords: Active gal. nuclei ; X-ray sources ; Redshifts Keywords: galaxies: active - galaxies: nuclei - galaxies: Seyfert Abstract: We present the first measurement of the BH mass function for broad-line active galaxies in the local universe. Using the ∼8500 broad-line active galaxies from SDSS-DR4, we construct a broad-line luminosity function that agrees very well with the local soft X-ray luminosity function. Using standard virial relations, we then convert observed broad-line luminosities and widths into BH masses. A mass function constructed in this way has the unique capability to probe the mass region <106M which, while insignificant in terms of total BH mass density, nevertheless may place important constraints on the mass distribution of seed BHs in the early universe. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 42 8497 The sample
See also: http://www.sdss.org : SDSS Home Page Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 19 A19 --- SDSS Name (JHHMMSS.ss+DDMMSS.s) 21- 26 F6.4 --- z Redshift (from SDSS) 28- 32 I5 km/s FWHMHa Hα FWHM 34- 38 F5.2 [10-7W] logLHa Hα luminosity 40- 42 F3.1 [solMass] logMBH Black hole mass (1)
Note (1): MBH=(2.0+0.4-0.3)x106(LHa)0.55±0.02(FWHMHa)2.06±0.06 where LHa is in 1042erg/s and FWHMHa is in 103km/s (Greene & Ho, 2005ApJ...630..122G)
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 16-Oct-2009
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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