Computer Science
Scientific paper
Jul 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002hst..prop.9293f&link_type=abstract
HST Proposal ID #9293
Computer Science
Hst Proposal Id #9293
Scientific paper
Recently, a nearly perfect relation has been recognized between the masses of the black holes {for 3x10^6 Msun < M_BH < 3x10^9 Msun} at the centers of galaxies and the velocity dispersions of their bulges. However, uncertainties over the exact slope of the correlation still remain, and it is not known if such a relation extends to black holes of lower and higher masses. The discovery of small {r a few hundred pc}, well defined, dust and gas disks in the nuclei of some active elliptical galaxies opened a new avenue for measuring central mass distributions. When ionized gas is present, a small number of high spatial resolution {e.g. STIS} spectra are sufficient to characterize the disk dynamics and the galaxy's central mass {e.g., M87, M81, NGC 4374}. We propose to use STIS spectroscopy to measure black hole masses, using gas dynamics, in the centers of several brightest cluster galaxies {BCGs}, 2 nearby galaxies with low velocity dispersions, and a number of elliptical galaxies known to harbor small nuclear dust disks. The proposed targets encompass a wide range of black hole masses, allowing us to fully examine the M_BH - sigma relationship. We will also obtain H-alpha and continuum images to fully characterize the gaseous and dust morphology as well as stellar surface profile in the central regions.
No associations
LandOfFree
Massive Black Holes in Early Type Galaxies does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Massive Black Holes in Early Type Galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Massive Black Holes in Early Type Galaxies will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-733374