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18 March 2025

» arxiv » astro-ph/0112423

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The black hole mass of BL Lacs from stellar velocity dispersion of the host galaxy
Renato Falomo ; Jari Kotilainen ; Aldo Treves ;
Date:	18 Dec 2001
Subject:	astro-ph
Abstract:	We present the first results from our on-going program to estimate black hole masses [M(BH)] of nearby BL Lac objects. The estimates are based on stellar velocity dispersion (sigma) of the BL Lac host galaxies from optical spectroscopy, and the recently found tight correlation between M{BH} and sigma in nearby early-type galaxies. For the first three BL Lacs, we find log M(BH) = 7.5 - 8.7 and M(BH)/M(host) = 0.03 - 0.1.
Source:	arXiv, astro-ph/0112423
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