HST observations of the intermediate polar EX Hydrae

Details HST observations of the intermediate polar EX Hydrae HST observations of the intermediate polar EX Hydrae

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aas...19915806b&link_type=abstract

American Astronomical Society, 199th AAS Meeting, #158.06; Bulletin of the American Astronomical Society, Vol. 34, p.568

Astronomy and Astrophysics

Astronomy

Scientific paper

The intermediate polar, EX Hydrae, was the subject of a large multi-wavelength campaign which took place on 5 May - 10 June 2000 and was comprised of observations from six satellites and four ground based observatories. One of these data sets, which we present here, is a six orbit HST/STIS observation which utilized the E140M grating in Echelle mode. The high wavelength resolution ( ~0.02Å/pixel), time-tagged spectra have allowed us to perform a phase resolved study of this system in which we see strong emission lines with broad and narrow components. The radial velocities of the broad and narrow components suggest that they have different origins within the binary system, with the narrow components being formed close to the white dwarf and the broad components forming in the outer accretion curtains. We also present X-ray and optical data from the campaign in order to provide a comprehensive picture of this system. We would like to thank the director of the Hubble Space Telescope for the allocation of Director's time to participate in the EX Hydrae multi-wavelength campaign. This research was partially supported by NASA grant NAG5-8644 and HST grant GO-08807.01-A to SBH.

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