Ultraviolet spectroscopy of Nova MUSCAE 1991

Details Ultraviolet spectroscopy of Nova MUSCAE 1991 Ultraviolet spectroscopy of Nova MUSCAE 1991

Jan 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26as...97..309s&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 97, no. 1, p. 309-311.

Astronomy and Astrophysics

Astronomy

5

Novae, Ultraviolet Spectroscopy, X Ray Stars, Accretion Disks, Emission Spectra, Iue, Light Curve, Spaceborne Astronomy, Stellar Spectra

Scientific paper

We report on a series of ultraviolet spectroscopic observations made with the IUE satellite, which sampled critical outburst stages of the soft X-ray transient Nova Muscae 1991. Continuum light curves, and a multi-epoch line analysis are presented. In addition, a single epoch optical-UV spectra obtained with the HST/FOS is discussed. The optical-UV continuum fits approximately the 'canonical' fv varies as V exp 1/3 power low expected for thermal emission from steady state accretion disk. The emission line spectrum contains prominent high ionization lines of C IV and N V. Weaker lines are seen at intermittent epochs, including some of lower ionization. The derivation of galactic reddening which has significant implications for distance estimates is discussed. Comparisons with previous SXT sources are considered.

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