Ultraviolet observations of accretion disk in LMC X-3

Details Ultraviolet observations of accretion disk in LMC X-3 Ultraviolet observations of accretion disk in LMC X-3

Jul 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994apj...429..826c&link_type=abstract

The Astrophysical Journal, vol. 429, no. 2, pt. 1, p. 826-831

Astronomy and Astrophysics

Astronomy

12

Astronomical Models, Astronomical Spectroscopy, Binary Stars, Black Holes (Astronomy), Luminosity, Stellar Mass Accretion, Time Dependence, Continuous Spectra, Gratings, Iue, Ultraviolet Spectra, Visible Spectrum

Scientific paper

We report information obtained from a series of International Ultraviolet Explorer (IUE) low-resolution spectra and two HST UV spectra of LMC X-3. The HST spectra are used to identify disk emission lines and interstellar absorptions as well as to fit continuum models, which indicate the presence of a hot disk component. The IUE observations, mainly taken over approximately 1.5 years, were intended to study how the observed characteristics of the accretion disk change through the precessional cycle. It is shown that although the emission line strengths and short-wavelength ultraviolet flux are well correlated, both optical and UV data show little long-term periodic modulation was present during our observations, indicating LMC X-3 had dropped into a 'low' state.

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