Astronomy and Astrophysics – Astrophysics
Scientific paper
1998-04-09
Astronomy and Astrophysics
Astrophysics
70 pages 20 figures, 1 table (ps file), ApJ in press
Scientific paper
10.1086/305445
We investigate the nature of stellar populations of major galaxy mergers between late-type spirals considerably abundant in interstellar medium by performing numerical simulations designed to solve both the dynamical and chemical evolution in a self-consistent manner. We particularly consider that the star formation history of galaxy mergers is a crucial determinant for the nature of stellar populations of merger remnants, and therefore investigate how the difference in star formation history between galaxy mergers affects the chemical evolution of galaxy mergers. We found that the rapidity of star formation, which is defined as the ratio of the dynamical time-scale to the time-scale of gas consumption by star formation, is the most important determinant for a number of fundamental characteristics of stellar populations of merger remnants. We mainly demonstrate that even the chemical evolution of elliptical galaxies can be strongly affected by the details of dynamical evolution of galaxy merging. Based upon the present numerical results, we adopt a specific assumption of the luminosity dependence of the rapidity of star formation and thereby discuss how successfully the present merger model can reproduce a number of fundamental chemical, photometric, and spectroscopic characteristics of elliptical galaxies.
Bekki Kenji
Shioya Yasuhiro
No associations
LandOfFree
Stellar populations in gas-rich galaxy mergers I. Dependence on star formation history 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 Stellar populations in gas-rich galaxy mergers I. Dependence on star formation history, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stellar populations in gas-rich galaxy mergers I. Dependence on star formation history will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-446575