The Massive Stellar Population in a Nearby Massive Low Surface Brightness Galaxy

Details The Massive Stellar Population in a Nearby Massive Low Surface Brightness Galaxy The Massive Stellar Population in a Nearby Massive Low Surface Brightness Galaxy

2000-09-20

arxiv.org/abs/astro-ph/0009335v1

Astronomy and Astrophysics

Astrophysics

to appear in "Galaxy Disks and Disk Galaxies", eds. J.G. Funes S.J. & E.M. Corsini, 2 pages, 2 postscript figures, uses newpas

Scientific paper

We have observed the closest known large, low surface brightness (LSB) galaxy, UGC 2302, with HST using WFPC2 and the F555W and F814W filters. UGC 2302 is a typical large LSB galaxy, and thus represents a good choice for detailed stellar population studies. Large LSBs represent an extreme star formation environment, both locally within their disks, and on a larger scale, often residing in underdense regions of the universe. Resolving the underlying stellar component of such a galaxy can provide critical information on how stars form and evolve in low metallicity, yet gas-rich environments. We resolve for the first time the massive stars and tip of the red giant branch in such a system.

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