Computer Science
Scientific paper
Jul 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000hst..prop.8877y&link_type=abstract
HST Proposal ID #8877
Computer Science
Hst Proposal Id #8877
Scientific paper
UV and X-ray observations of intrinsic absorption reveal that outflowing photoionized gas with a substantial covering factor is a major nuclear component in at least 50% of Seyfert 1 galaxies. X-ray observations suggest multiple zones with highly variable ionization states and column densities. UV observations reveal multiple kinematic components, with column densities that vary in time. This variability indicates that simultaneous UV and X-ray observations at high spectral resolution are the only way to decipher the complex kinematic and ionization structure and the true connection between UV and X-ray absorbers, and hence form an accurate picture of the environs of the inner nucleus. We propose a program to do this for the bright Seyfert 1 galaxy Mrk 509 using the STIS echelle gratings on {it HST} and the high-energy gratings on {it Chandra}.
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