Star Formation Histories of Dwarf Galaxies from the Colour-Magnitude Diagrams of Their Resolved Stellar Populations
Joint Authors
Source
Issue
Vol. 2010, Issue 2010 (31 Dec. 2010), pp.1-25, 25 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2009-11-19
Country of Publication
Egypt
No. of Pages
25
Main Subjects
Abstract EN
In this tutorial paper we summarize how the star formation (SF) history of a galactic region can be derived from the colour-magnitude diagram (CMD) of its resolved stars.
The procedures to build synthetic CMDs and to exploit them to derive the SF histories (SFHs) are described, as well as the corresponding uncertainties.
The SFHs of resolved dwarf galaxies of all morphological types, obtained from the application of the synthetic CMD method, are reviewed and discussed.
To summarize: (1) only early-type galaxies show evidence of long interruptions in the SF activity; late-type dwarfs present rather continuous, or gasping, SF regimes; (2) a few early-type dwarfs have experienced only one episode of SF activity concentrated at the earliest epochs, whilst many others show extended or recurrent SF activity; (3) no galaxy experiencing now its first SF episode has been found yet; (4) no frequent evidence of strong SF bursts is found; (5) there is no significant difference in the SFH of dwarf irregulars and blue compact dwarfs, except for the current SF rates.
Implications of these results on the galaxy formation scenarios are briefly discussed.
American Psychological Association (APA)
Cignoni, Michele& Tosi, Monica. 2009. Star Formation Histories of Dwarf Galaxies from the Colour-Magnitude Diagrams of Their Resolved Stellar Populations. Advances in Astronomy،Vol. 2010, no. 2010, pp.1-25.
https://search.emarefa.net/detail/BIM-450494
Modern Language Association (MLA)
Cignoni, Michele& Tosi, Monica. Star Formation Histories of Dwarf Galaxies from the Colour-Magnitude Diagrams of Their Resolved Stellar Populations. Advances in Astronomy No. 2010 (2010), pp.1-25.
https://search.emarefa.net/detail/BIM-450494
American Medical Association (AMA)
Cignoni, Michele& Tosi, Monica. Star Formation Histories of Dwarf Galaxies from the Colour-Magnitude Diagrams of Their Resolved Stellar Populations. Advances in Astronomy. 2009. Vol. 2010, no. 2010, pp.1-25.
https://search.emarefa.net/detail/BIM-450494
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-450494