Ram Pressure Stripping in the Virgo Spiral NGC 4522

Details Ram Pressure Stripping in the Virgo Spiral NGC 4522 Ram Pressure Stripping in the Virgo Spiral NGC 4522

Jul 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003hst..prop.9773k&link_type=abstract

HST Proposal ID #9773

Physics

Hst Proposal Id #9773 Galaxies

Scientific paper

We propose to image in BVI with HST ACS/WFC the highly inclined Virgo cluster spiral galaxy NGC 4522, which is perhaps the nearest and clearest case of a galaxy whose interstellar medium {ISM} is being actively stripped by the pressure of the intracluster medium {ICM}. High resolution HST B-I mages of dust in the ISM will show important details of the interaction, such as what happens to giant molecular clouds in the interaction, how rapidly and cleanly disks are stripped, and whether star formation is triggered by ICM pressure. We will identify extraplanar star clusters which formed in the stripped gas, and from their ages and spatial distribution constrain the stripping history of NGC 4522. Only with the spatial resolution of HST can we map dust features down to the few pc scale of GMCs, and clearly identify stars clusters. In-depth study of this galaxy should provide new insight into the physical processes which occur in ICM-ISM interactions, and give us greater understanding of galaxy evolution in clusters of all types and at all redshifts.

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