Upper limits on the mass of supermassive black holes from HST/STIS archival data

Details Upper limits on the mass of supermassive black holes from HST/STIS archival data Upper limits on the mass of supermassive black holes from HST/STIS archival data

2006-10-20

arxiv.org/abs/astro-ph/0610624v1

Astronomy and Astrophysics

Astrophysics

2 pages, 1 figure. To appear in the proceedings of "Black Holes: from Stars to Galaxies", IAU Symp. No. 238, V. Karas & G. Mat

Scientific paper

The growth of supermassive black holes (SBHs) appears to be closely linked with the formation of spheroids. There is a pressing need to acquire better statistics on SBH masses, since the existing samples are preferentially weighted toward early-type galaxies with very massive SBHs. With this motivation we started a project aimed at measuring upper limits on the mass of the SBHs in the center of all the nearby galaxies (D<100 Mpc) for which STIS/G750M spectra are available in the HST archive. These upper limits will be derived by modeling the central emission-line widths observed in the Halpha region over an aperture of ~0.1''. Here we present our results for a subsample of 20 S0-Sb galaxies within 20 Mpc.

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