Integrated photometric and spectroscopic properties of massive stellar clusters in Wolf-Rayet galaxies

Bibcode
2003IAUS..212..696B
Buckalew, Brent A.; Dufour, Reginald J.; Castañeda, Héctor O.
Bibliographical reference

A Massive Star Odyssey: From Main Sequence to Supernova, Proceedings of IAU Symposium #212, held 24-28 June 2001 in Lanzarote, Canary island, Spain. Edited by Karel van der Hucht, Artemio Herrero, and Esteban, César. San Francisco: Astronomical Society of the Pacific, 2003., p.696

Advertised on:
0
2003
Number of authors
3
IAC number of authors
1
Citations
0
Refereed citations
0
Description
We report here the first results of an extensive optical/near-infrared imaging and spectroscopic study of massive stellar clusters in Wolf-Rayet (WR) galaxies using observations obtained from KPNO (USA), OAN (Mexico), the HST and the 2MASS data archive. We have collected spectra, B-imagery and 2MASS JHK imagery of approximately 60 prominent stellar clusters in 23 WR galaxies. One-third of the clusters have a WR stellar signature at HeIIλ4686. In this poster, we present the comparison of the derived ages and masses of clusters with WR stars (WRCs) against clusters not containing WR stars (nWRCs). The results show that the mean age of the WRCs distribution is 5.2 ± 1.8 Myr and 6.4 ± 2 Myr for the nWRCs. The mean ages of the two cluster groups are not statistically different. The WRCs masses appear to be more evenly distributed than the nWRC masses and one typically finds that the WRC mass in a particular galaxy is larger than the nWRC mass.
Type
Non-refereed

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