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SFHs Across the Merging Disks of Arp 244 – from FUV to MIR

Published online by Cambridge University Press:  13 April 2010

Hong-Xin Zhang ,
Yu Gao  and
Xu Kong
Hong-Xin Zhang
Affiliation:
Purple Mnt. Obs, Chinese Academy of Sciences, 2 West Beijing Road, Nanjing 210008, China Graduate School, Chinese Academy of Sciences, Beijing 100039, China
Yu Gao
Affiliation:
Purple Mnt. Obs, Chinese Academy of Sciences, 2 West Beijing Road, Nanjing 210008, China
Xu Kong
Affiliation:
Center for Astrophysics, University of Science and Technology of China, Hefei 230026, China
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Abstract

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Including MIPS 24 μm dust emission in the multi-band stellar population analysis, we roughly constrain the star formation histories (SFHs) of MIPS 24 μm selected star-forming regions across the merging disks of the Antennae galaxies. While the overlap regions hold the highest ratios of young over intermediate populations, the western-loop regions have the highest ratios of intermediate to old populations. We find two sequential star formation (SF) paths in the overlap regions, which we interpret as the imprint of the interpenetrating process of the two merging disks following their second close encounter.

Keywords

galaxies: the “Anennae” galaxies–galaxies: interactions– galaxies: stellar content
Type
Poster Papers
Information
Proceedings of the International Astronomical Union , Volume 5 , Symposium S262: Stellar Populations – Planning for the Next Decade , August 2009 , pp. 454 - 455
Copyright
Copyright © International Astronomical Union 2010

References

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