Recognition: unknown
The black hole mass of BL Lacs from stellar velocity dispersion of the host galaxy
classification
🌌 astro-ph
keywords
hostblackdispersionfirstgalaxiesholelacsnearby
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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.
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