Other
Scientific paper
Jan 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21522902s&link_type=abstract
American Astronomical Society, AAS Meeting #215, #229.02; Bulletin of the American Astronomical Society, Vol. 42, p.577
Other
Scientific paper
The redshift evolution of galaxy morphology provides crucial information on the formation and evolution of galaxies. Using the 2-sq degree COSMOS survey, we have studied the evolution of bars, bulges and disks from the present day to z 1. Over the last 7 Gyr of lookback time, we have measured in detail the rapidly declining bar fraction in L* spiral galaxies; it declines from its local value 65% to < 25% at z 0.85. This bar fraction, however, is strongly dependent on the host galaxy properties. At z 0.85, the most massive (> 1011 Msun), red and bulge dominated systems already had a high bar fraction ( > 50%). With the COSMOS data we are able to quantify the precise rate at which galaxies "matured", became sufficiently massive and cold to host bars and arrived on the Hubble sequence. The results are robust against a host of selection and completeness effects which typically plague studies of high redshift galaxy morphology. Other studies of galaxy morphology with COSMOS have been aimed at understanding the evolution of the morphology density relationship. We confirm that while the relationship is present to z 1, there may be a critical mass above which the environment is less important in shaping a galaxy. I will also review several other results from a host of galaxy morphology studies with COSMOS. Finally, I will describe the enhanced products released to the public by COSMOS which include five morphology catalogs that are available in addition to the exquisite and publicly available panchromatic COSMOS data.
Cosmos Team
Sheth Kartik
No associations
LandOfFree
Witnessing the Assembly of Bars and Spirals on to the Hubble Sequence: Galaxy Evolution in COSMOS 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 Witnessing the Assembly of Bars and Spirals on to the Hubble Sequence: Galaxy Evolution in COSMOS, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Witnessing the Assembly of Bars and Spirals on to the Hubble Sequence: Galaxy Evolution in COSMOS will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-961001