Age and Extinction of the Ultraviolet Emitting Regions in M82

Details Age and Extinction of the Ultraviolet Emitting Regions in M82 Age and Extinction of the Ultraviolet Emitting Regions in M82

2009-06-03

arxiv.org/abs/0906.0759v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

6 pages, To appear in the proceedings of "A Long Walk Through Astronomy: A Celebration of Luis Carrasco's 60th Birthday", Huat

Scientific paper

The M82 galaxy has been the subject of several studies basically because it is relatively close to to the Milky Way and it displays a strong star formation activity. Using multi-band images of M82 we have determined the age and extinction of the stellar population located in regions with strong UV emission, these region are in the nucleus and the disk of M82. We also have employed the UV images of M82 and the physical properties of its stellar clusters to measure the contribution of the clusters to the detected UV flux. We found that clusters located in the nuclear regions are emitting all the observed UV flux, whereas clusters of the disk emit less than ~10%. Based on the results obtained from this work we can infer that the field stars located in the disk of M82 could have been part of a stellar cluster when they were born.

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