Calibrating Star Formation with the Metal-Rich Starburst Galaxy M83 {NGC5236}

Details Calibrating Star Formation with the Metal-Rich Starburst Galaxy M83 {NGC5236} Calibrating Star Formation with the Metal-Rich Starburst Galaxy M83 {NGC5236}

Jul 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999hst..prop.8234c&link_type=abstract

HST Proposal ID #8234

Physics

Hst Proposal Id #8234 Galaxy Populations And Interactions

Scientific paper

A large fraction of the active star-formation in the local and intermediate-redshift Universe happens in relatively metal- rich regions of galaxies. We propose to study the structure of the prime nearby example of a metal-rich, actively star- forming environment: the starburst located in the nuclear region of the spiral galaxy M83. In M83 the PC gives 1 pc resolution so we can chart the detailed structure of this dusty but UV-bright system. For this purpose we will obtain broad-band images in the mid-UV, V, and I bands to locate and characterize stars, star clusters, and obscuring dust clouds, as well as HAlpha, HBeta, OIII, and SII narrow band images to diagnose conditions in the ionized ISM. We will combine these datasets to investigate the presence of sequential/propagating star formation and establish whether the starburst is a large- scale coherent or a random process. For this purpose we will measure: {1} the recent star formation history of both stellar clusters and young diffuse population; {2} the dust distribution; {3} the structures in the shocked and photo- ionized gas. This program will allow us to quantitatively place M83 in the broader context of starbursts in terms of the energetics, evolution, and internal structures of a key class of burst events, while also exploring its impact on the surrounding galaxy.

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