Using Chandra and HST to Construct the First Detailed Timeline of Early-Type Galaxy Evolution

Details Using Chandra and HST to Construct the First Detailed Timeline of Early-Type Galaxy Evolution Using Chandra and HST to Construct the First Detailed Timeline of Early-Type Galaxy Evolution

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008cxo..prop.2619z&link_type=abstract

Chandra proposal ID #10700916

Physics

Scientific paper

While considerable effort has been devoted to statistical studies of the origin of the red sequence of galaxies, there has been relatively little direct exploration of galaxies transforming from late to early types. Such galaxies are identified by their post-starburst spectra, bulge-dominated, tidally-disturbed morphologies, and current lack of gas. We are constructing the first detailed timeline of their evolution onto the red sequence, pinpointing when star formation ends, nuclear activity ceases, globular clusters form, and the bulk of the merging progenitors' dust disappears. Here we propose to obtain HST imaging of nine galaxies, whose wide range of post-starburst ages we have precisely dated with a new UV-optical technique and for which we were awarded Spitzer time.

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