Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21331701c&link_type=abstract
American Astronomical Society, AAS Meeting #213, #317.01; Bulletin of the American Astronomical Society, Vol. 41, p.295
Astronomy and Astrophysics
Astronomy
Scientific paper
Some early-type (elliptical and S0) galaxies are now known to host cold gas and star formation. To investigate the details of the relation between the cold molecular gas and star formation in these galaxies, I compare new interferometric maps of the molecular gas with optical integral-field unit (IFU) data. This comparison identifies three categories of early-type galaxies with molecular gas: 1) galaxies that are clearly star forming, evidenced by star-forming emission line ratios, 2) galaxies that have young populations of stars, evidenced by absorption linestrengths, and most surprisingly, 3) galaxies that have no signs of star formation or young stars, despite the presence of molecular gas. To see if star formation in early-types follows the same relations as observed in spiral galaxies, I compare classical star formation tracers, such as LFIR, LHβ, and radio continuum. The most strongly star forming galaxies appear to follow the classical relations, although the situation is less clear for the weakly star-forming galaxies and the relations clearly fail for galaxies with significant AGN.
Bureau Martin
Combes François
Crocker Alison Faye
Young Lisa Marie
No associations
LandOfFree
Molecular Gas and Star Formation in Elliptical/S0 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 Molecular Gas and Star Formation in Elliptical/S0 Galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Molecular Gas and Star Formation in Elliptical/S0 Galaxies will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1697685