Hubble space telescope imaging of seyfert galaxies
Nelson, Charles H.
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Recent searches for massive black holes in galactic nuclei show that they are common if not ubiquitous. Furthermore, there are important relationships between black hole mass and properties characterizing the size and gravitational potential of the host galaxy bulge. To investigate these relationships we have begun an analysis of the bulges of Seyfert galaxies, a class of active galactic nucleus (AGN) in which gravitational energy is released through accretion onto the black hole, resulting in a luminous central source. Results for Seyfert galaxies in terms of their surface brightness profiles, overall luminosities and will be compared to those of normal galaxies. The goal is to further understand the process by which material is funneled to the galaxy centers, ultimately serving as a source of fuel for the active nucleus.
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Weinzirl, Timothy; Bennett, Wendy; Madland, Mark (2007-05-29)Seyfert galaxies, in which accretion onto a massive nuclear black hole acts as a powerful energy source, allegedly have bulges more luminous per unit mass than those in normal galaxies. We have tested this claim through ...
Nelson, Charles H.; Green, Richard; Bower, Gary; Gebhardt, Karl; Weistrop, Donna (2003)Bulge stellar velocity dispersions, sigma, in Seyfert 1 galaxies are combined with the M_bh -- sigma relation to validate reverberation mapping as a means of determining nuclear black hole masses. Seyfert galaxies follow ...
Bennett, Wendy; Weinzirl, Timothy; Nelson, Charles H. (2005-06-23)Previous investigations have indicated that the bulges of Seyfert galaxies are more luminous than those in normal galaxies of the same mass. This may result if Seyfert bulges have experienced recent star formation, perhaps ...