"Star formation in UV-bright interacting galaxies"
Nelson, Charles H.
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The interacting pair NGC3395 and NGC3396 and the interacting trio and NGC3991, NGC3994, and NGC3995 emit strongly in the ultraviolet, indicating multiple regions of active star formation. To investigate the nature of the star formation, we obtained U, B, V, and R images using the 40-inch telescope at Mt. Laguna. Our goal is to determine the sequence of star-formation episodes in these systems. Possibilities include a "chain reaction" - one burst triggering another burst and so on - or a continuity of stellar formation that remains approximately constant with time.
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Hulsebus, Alan; Nelson, Charles H.; Ragan, Sarah; McGleam, Catherine (2007-05-31)Galaxy interactions are known to drive interstellar gas toward the nuclear regions, thus triggering bursts of star formation. To investigate the relationship between galaxy interactions and the induced star formation, we ...
Bennett, Wendy; Madland, Mark; Weinzirl, Timothy; Nelson, Charles H. (2007-06-01)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 ...
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 ...