Physics
Scientific paper
Dec 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997hst..prop.7577h&link_type=abstract
HST Proposal ID #7577
Physics
Hst Proposal Id #7577 Galaxies
Scientific paper
This program will address five basic questions about the nature of starbursts: {1} What kind of star cluster - open cluster or globular cluster - is formed in a starburst? {2} How is the evolution of a starburst system influenced by metallacity, especially in the case of a super-solar metallicity? {3} Does the birth and evolution of one star cluster trigger star formation in its environs? {4} Is there a physical and/or evolutionary link between a circum-nuclear starburst and the nucleus? {5} For barred spirals, what is the connection between a starburst and a spiral bar? The target chosen for this case study is M83, a.k.a. NGC 5236. This galaxy is well suited for study of nuclear starbursts because of its relative proximity {at 4 Mpc, it is the nearest barred spiral galaxy} and its near face-on aspect. Earlier WF/PC images showed that the starburst is composed of about 20 young star clusters, each one similar to 30 Doradus. The clusters are aligned in a circum-nuclear arc going from SE to NW. The observations include: {1} STIS slitless UV spectrograms {G140L} of the nucleus of M83 {NGC5236}; {2} STIS/CCD pictures of the nuclear region in order to locate each of the clusters and to carry out a wavelength calibration;
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