THE LOCAL BLACK HOLE MASS FUNCTION DERIVED from the M BH-P and the M BH-n RELATIONS

Burcin Mutlu-Pakdil, Marc S. Seigar, Benjamin L. Davis

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

We present a determination of the supermassive black hole (SMBH) mass function for early- and late-type galaxies in the nearby universe (z < 0.0057), established from a volume-limited sample consisting of a statistically complete collection of the brightest spiral galaxies in the southern hemisphere. The sample is defined by limiting luminosity (redshift-independent) distance, D L = 25.4 Mpc, and a limiting absolute B-band magnitude, . These limits define a sample of 140 spiral, 30 elliptical (E), and 38 lenticular (S0) galaxies. We established the Sérsic index distribution for early-type (E/S0) galaxies in our sample. Davis et al. established the pitch angle distribution for their sample, which is identical to our late-type (spiral) galaxy sample. We then used the pitch angle and the Sérsic index distributions in order to estimate the SMBH mass function for our volume-limited sample. The observational simplicity of our approach relies on the empirical relation between the mass of the central SMBH and the Sérsic index for an early-type galaxy or the logarithmic spiral-arm pitch angle for a spiral galaxy. Our SMBH mass function agrees well at the high-mass end with previous values in the literature. At the low-mass end, although inconsistencies exist in previous works that still need to be resolved, our work is more in line with expectations based on modeling of black hole evolution.

Original languageEnglish (US)
Article number117
JournalAstrophysical Journal
Volume830
Issue number2
DOIs
StatePublished - Oct 20 2016

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pitch (inclination)
spiral galaxies
galaxies
Southern Hemisphere
universe
luminosity
modeling
estimates
distribution
index

Keywords

  • galaxies: elliptical and lenticular, cD
  • galaxies: fundamental parameters
  • galaxies: nuclei
  • galaxies: structure
  • galaxies:spiral

Cite this

THE LOCAL BLACK HOLE MASS FUNCTION DERIVED from the M BH-P and the M BH-n RELATIONS. / Mutlu-Pakdil, Burcin; Seigar, Marc S.; Davis, Benjamin L.

In: Astrophysical Journal, Vol. 830, No. 2, 117, 20.10.2016.

Research output: Contribution to journalArticle

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