FUV Observations of EX Hya during a Large Multi-wavelength Campaign

Details FUV Observations of EX Hya during a Large Multi-wavelength Campaign FUV Observations of EX Hya during a Large Multi-wavelength Campaign

Jul 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999hst..prop.8807h&link_type=abstract

HST Proposal ID #8807

Physics

Hst Proposal Id #8807

Scientific paper

EX Hya is an eclipsing binary with an orbital period of 98 minutes and a WD spin period of 67 min, 2/3 of the orbital period in length. EX Hya contains optically thick gas at temperatures of 10, 000 to 100, 000K and thin gas at 1 million Kelvins and higher. temperature plasma. As such, it is a source of strong emission lines throughout the FUV to IR spectral regions. As part of a large 1 million second multi-wavelength campaign, we propose to obtain ultra-violet STIS spectroscopy with the Hubble Space telescope. The UV spectrum of EX Hya is rich in emission lines due to C, Si, AL, N, He and H Lyman alpha. High S/N and time resolution UV spectra of EX Hya will allow determinations of the temperature and density of the UV emitting gas both within the inner disk coronal region and within the accretion funnels. Joining in this campaign are Chandra, RXTE, USA, EUVE, FUSE, and Optical and IR spectroscopy and photometry.

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