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Cambridge University Press (CUP), Proceedings of the International Astronomical Union, S262(5), p. 406-407, 2009

DOI: 10.1017/s1743921310003443

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Young Stellar Populations in the Collisional Ring Galaxy NGC 922

Journal article published in 2009 by A. Pellerin, G. R. Meurer ORCID, K. Bekki, D. M. Elmegreen, O. I. Wong ORCID, P. Knezek
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Data provided by SHERPA/RoMEO

Abstract

AbstractWe studied the star cluster population properties in the nearby collisional ring galaxy NGC 922 using HST/WFPC2 photometry and population synthesis modeling. We found that 69% of the detected clusters are younger than 7 Myr, and that most of them are located in the ring or along the bar, consistent with the strong Hα emission. The images also show a tidal plume pointing toward the companion. Its stellar age is consistent with pre-existing stars that were probably stripped off during the passage of the companion. We compared the star-forming complexes observed in NGC 922 with those of a distant ring galaxy from the GOODS eld. It indicates very similar masses and sizes, suggesting similar origins. Finally, we found clusters that are excellent progenitor candidates for faint fuzzy clusters.

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