Theoretical Color-Magnitude Diagrams and the Star Forming Histories of Interacting Open Multi-population Model Galaxies: Bursts and Busts

Details Theoretical Color-Magnitude Diagrams and the Star Forming Histories of Interacting Open Multi-population Model Galaxies: Bursts and Busts Theoretical Color-Magnitude Diagrams and the Star Forming Histories of Interacting Open Multi-population Model Galaxies: Bursts and Busts

2005-06-20

arxiv.org/abs/astro-ph/0506461v1

Astronomy and Astrophysics

Astrophysics

4 pages, 2 figs, uses aa.sty (2-column); Accepted for publication, A&A (2005, in press; Research Note) (pdf file only)

Scientific paper

10.1051/0004-6361:20053184

This note presents theoretical color-magnitude diagrams (CMDs) and metallicity evolution for Galactic multi-population models coupled to stellar evolution models for systems undergoing stripping and re-accretion of ambient material, called ``open'' systems in our recent studies (Valle, Galli, and Shore, 2005, A&A, 435, 551). We show that the observables for such systems, in particular those related to the recovered star formation as a function of time, are ambiguous -- systems with non-monotonic star formation rates can appear as either bursting systems or galaxies with a hiatus in the star formation.

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