Physics
Scientific paper
Jul 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999hst..prop.8546d&link_type=abstract
HST Proposal ID #8546
Physics
Hst Proposal Id #8546
Scientific paper
We are requesting Director's discretionary time for obtaining HST STIS UV observations of the brightest X-ray emitting stellar corona in the sky, that of Capella, simultaneously with a unique campaign of very deep Chandra X-ray Observatory spectroscopic observations. Simultaneous observations with EUVE and the VLA have already been granted; a simultaneous observation with SAX is pending final approval. If STIS observations are approved, this campaign should provide the first detailed temperature and density diagnostics for stellar coronal plasma over the full range of temperatures 2e4 K - 8e7 K. STIS observations are essential for deconvolving the contributions of the two Capella binary components to the observed emission, and for probing the physics of transition region plasma.
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