Mathematics – Logic
Scientific paper
Oct 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aps..tsfap1001f&link_type=abstract
American Physical Society, Texas Section of the APS Joint Fall Meeting, October 5-7, 2006, abstract #AP1.001
Mathematics
Logic
Scientific paper
Recently, we identified two isolated early-type galaxies with unusually blue optical colors (Marcum etal, AJ 127, 3213), indicating current or recent massive star formation. Merger-induced star formation is the most likely mechanism for the odd photometric properties of these systems, yet, interestingly, they do not show the strong morphological scars (tidal tails, shells) generally attributed to merger activity. We concluded that these systems are late stage mergers, in which those morphological scars have largely dissipated, but photometric anomalies remain. To further explore the evolutionary paths of elliptical galaxies, we are ``mining'' the Sloan Digital Sky Survey for anomalously blue ellipticals, which may represent local universe analogues to distant young galaxies. We will describe representative objects and outline their properties.
Fanelli Michael
Fuse Chris
Marcum Pamela
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