skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: EXPLORING THE CORRELATIONS BETWEEN GLOBULAR CLUSTER POPULATIONS AND SUPERMASSIVE BLACK HOLES IN GIANT GALAXIES

Abstract

This paper presents an analysis of the correlation between the number of globular clusters (N{sub GC}) in giant galaxies and the mass of the galaxies' central supermassive black hole (M{sub SMBH}). I construct a sample of 20 elliptical, spiral, and S0 galaxies with known SMBH masses and with accurately measured GC system properties derived from wide-field imaging studies. The coefficients of the best-fitting N{sub GC}-M{sub SMBH} relation for the early-type galaxies are consistent with those from previous work but in some cases have smaller relative errors. I examine the correlation between N{sub GC} and M{sub SMBH} for various subsamples and find that elliptical galaxies show the strongest correlation, while S0 and pseudobulge galaxies exhibit increased scatter. I also compare the quality of the fit of the numbers of metal-poor GCs versus SMBH mass and the corresponding fit for metal-rich GCs. I supplement the 20 galaxy sample with 10 additional galaxies with reliable N{sub GC} determinations but without measured M{sub SMBH}. I use this larger sample to investigate correlations between N{sub GC} and host galaxy properties like total galaxy luminosity and stellar mass, and bulge luminosity and mass. I find that the tightest correlation is between N{sub GC} and total galaxymore » stellar mass. This lends support to the notion that N{sub GC} and M{sub SMBH} are not directly linked but are correlated because both quantities depend on the host galaxy potential. Finally, I use the N{sub GC}-M{sub SMBH} relation derived from the 20 galaxy sample to calculate predicted M{sub SMBH} values for the 10 galaxies with accurate N{sub GC} measurements but without measured SMBH masses.« less

Authors:
 [1]
  1. Department of Astronomy, Indiana University, 727 East Third Street, Bloomington, IN 47405 (United States)
Publication Date:
OSTI Identifier:
22089815
Resource Type:
Journal Article
Journal Name:
Astronomical Journal (New York, N.Y. Online)
Additional Journal Information:
Journal Volume: 144; Journal Issue: 5; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1538-3881
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ASTRONOMY; ASTROPHYSICS; BLACK HOLES; COMPARATIVE EVALUATIONS; CORRELATIONS; GALAXIES; LUMINOSITY; MASS; METALS; STAR CLUSTERS

Citation Formats

Rhode, Katherine L., E-mail: rhode@astro.indiana.edu. EXPLORING THE CORRELATIONS BETWEEN GLOBULAR CLUSTER POPULATIONS AND SUPERMASSIVE BLACK HOLES IN GIANT GALAXIES. United States: N. p., 2012. Web. doi:10.1088/0004-6256/144/5/154.
Rhode, Katherine L., E-mail: rhode@astro.indiana.edu. EXPLORING THE CORRELATIONS BETWEEN GLOBULAR CLUSTER POPULATIONS AND SUPERMASSIVE BLACK HOLES IN GIANT GALAXIES. United States. doi:10.1088/0004-6256/144/5/154.
Rhode, Katherine L., E-mail: rhode@astro.indiana.edu. Thu . "EXPLORING THE CORRELATIONS BETWEEN GLOBULAR CLUSTER POPULATIONS AND SUPERMASSIVE BLACK HOLES IN GIANT GALAXIES". United States. doi:10.1088/0004-6256/144/5/154.
@article{osti_22089815,
title = {EXPLORING THE CORRELATIONS BETWEEN GLOBULAR CLUSTER POPULATIONS AND SUPERMASSIVE BLACK HOLES IN GIANT GALAXIES},
author = {Rhode, Katherine L., E-mail: rhode@astro.indiana.edu},
abstractNote = {This paper presents an analysis of the correlation between the number of globular clusters (N{sub GC}) in giant galaxies and the mass of the galaxies' central supermassive black hole (M{sub SMBH}). I construct a sample of 20 elliptical, spiral, and S0 galaxies with known SMBH masses and with accurately measured GC system properties derived from wide-field imaging studies. The coefficients of the best-fitting N{sub GC}-M{sub SMBH} relation for the early-type galaxies are consistent with those from previous work but in some cases have smaller relative errors. I examine the correlation between N{sub GC} and M{sub SMBH} for various subsamples and find that elliptical galaxies show the strongest correlation, while S0 and pseudobulge galaxies exhibit increased scatter. I also compare the quality of the fit of the numbers of metal-poor GCs versus SMBH mass and the corresponding fit for metal-rich GCs. I supplement the 20 galaxy sample with 10 additional galaxies with reliable N{sub GC} determinations but without measured M{sub SMBH}. I use this larger sample to investigate correlations between N{sub GC} and host galaxy properties like total galaxy luminosity and stellar mass, and bulge luminosity and mass. I find that the tightest correlation is between N{sub GC} and total galaxy stellar mass. This lends support to the notion that N{sub GC} and M{sub SMBH} are not directly linked but are correlated because both quantities depend on the host galaxy potential. Finally, I use the N{sub GC}-M{sub SMBH} relation derived from the 20 galaxy sample to calculate predicted M{sub SMBH} values for the 10 galaxies with accurate N{sub GC} measurements but without measured SMBH masses.},
doi = {10.1088/0004-6256/144/5/154},
journal = {Astronomical Journal (New York, N.Y. Online)},
issn = {1538-3881},
number = 5,
volume = 144,
place = {United States},
year = {2012},
month = {11}
}