Using Bars as Signposts of Galaxy Evolution

Details Using Bars as Signposts of Galaxy Evolution Using Bars as Signposts of Galaxy Evolution

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aas...20110001s&link_type=abstract

American Astronomical Society, 201st AAS Meeting, #100.01; Bulletin of the American Astronomical Society, Vol. 34, p.1268

Astronomy and Astrophysics

Astronomy

Scientific paper

Recent studies of galaxy morphology with the Hubble Deep Fields have indicated a dramatic paucity of bars beyond a redshift > 0.5. This result is unexpected because the classical bar formation mechanism would predict that bars ought to be more common at higher redshifts because of dynamically colder galaxy disks and increased interactions. If the scarcity of bars is true, then serious constraints may be placed on the evolutionary stage of galactic disks. On the other hand, it is possible that the observations are misleading due to band-shifting and dust obscuration effects. While these criticisms have been suggested qualitatively, a quantitative analysis of the evolution of the bar fraction with redshift has been missing. We present preliminary results from an analysis of the bar fraction as a function of redshift using the NICMOS Deep Field, the best dataset available for such a quantitative study. For a control sample we use a sample of spirals representative of the nearby Universe and simulate their appearance at different redshifts using an IDL code developed by Strubbe et al. (discussed in poster session). This work is partially supported by grant HST-AR-09552.01-A through a grant from the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Incorporated, under NASA contract NAS5-26555, and by NSF grant AST-9981546.

Affiliated with

Also associated with

No associations

Rating

Using Bars as Signposts of Galaxy Evolution 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 Using Bars as Signposts of Galaxy Evolution, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Using Bars as Signposts of Galaxy Evolution will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1890941