Journal Article

The correlation of black hole mass with metallicity index of host spheroid

Shota Kisaka, Yasufumi Kojima and Yosuke Otani

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 390, issue 2, pages 814-818
Published in print October 2008 | ISSN: 0035-8711
Published online October 2008 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-2966.2008.13797.x
The correlation of black hole mass with metallicity index of host spheroid

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We investigate the correlation between the mass of the supermassive black holes (SMBHs) and metal abundance, using existing data sets. The SMBH mass Mbh is well correlated with integrated stellar feature of Mgb. For 28 galaxies, the best-fitting Mbh–Mgb relation has a small scatter, which is an equivalent level with other well-known relation, such as a correlation between the stellar velocity dispersion and the mass. An averaged iron index 〈Fe〉 also positively correlates with Mbh, but the best-fitting Mbh–〈Fe〉 relation has a larger scatter. The difference comes from the synthesis and evolution mechanisms, and may be important for the SMBH and star formation history in the host spheroid.

Keywords: black hole physics; galaxies: abundances; galaxies: bulges

Journal Article.  2940 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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