Other
Scientific paper
Jul 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991hst..prop.2644n&link_type=abstract
HST Proposal ID #2644
Other
Hst Proposal Id #2644
Scientific paper
Starburst galaxies are known to pump prodigious amounts of mass, energy and momentum into their circumgalactic halos and the surrounding intergalactic medium. Outflows from starbursts are seen with both narrow band images and optical spectroscopic studies. The physics of these flows is fascinating. The most plausible explanation of their origin is that they are driven by a continuous energy and momentum input from the supernovae explosions. We propose here a coherent, in-depth study of the physical state of these outflows. We shall study in detail the absorption line spectra of five quasars behind starburst outflows at projected galactocentric distances of order 10-100 kpc to learn about the ionisation state, metallicity, filling factor, geometry and kinematics of the outflowing gas. With HST the studies will be of comparable sensitivity and resolution to the studies of gas surrounding our own galaxy and we emphasize that there is no other way to get the information needed to determine the physical state of these flows.
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