The Hubble Space Telescope observations of X-ray nova MUSCAE 1991 and its spectral evolution

Details The Hubble Space Telescope observations of X-ray nova MUSCAE 1991 and its spectral evolution The Hubble Space Telescope observations of X-ray nova MUSCAE 1991 and its spectral evolution

Oct 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...397..664c&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 397, no. 2, p. 664-673.

Astronomy and Astrophysics

Astrophysics

41

Hubble Space Telescope, Novae, Stellar Evolution, Stellar Spectra, X Ray Stars, Absorption Spectra, Accretion Disks, Astronomical Models, Faint Object Camera, Interstellar Extinction, Line Spectra

Scientific paper

Hubble Space Telescope Faint Object Spectrograph (FOS) Faint Object Camera (FOC) and observations of Nova Muscae 1991 obtained on May 14-15, 1991 are presented and discussed. A nearly featureless continuum with broad 2200 A absorption feature and no Balmer jump is found. The FOS spectrum is modeled, including previous multiepoch IUE, optical, and X-ray data using a simple blackbody accretion disk model. It is found that the mass transfer rate decays exponentially with a characteristic time of about 43 days. The cooling front predicted by the disk instability model should have been observable, but was not seen.

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