Ultraviolet spectra of the X-ray transient A0538-66

Details Ultraviolet spectra of the X-ray transient A0538-66 Ultraviolet spectra of the X-ray transient A0538-66

Jul 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...258..240r&link_type=abstract

Astrophysical Journal, Part 1, vol. 258, July 1, 1982, p. 240-244.

Astronomy and Astrophysics

Astrophysics

4

Bursts, Emission Spectra, Iue, Magellanic Clouds, Ultraviolet Spectra, X Ray Sources, B Stars, Continuous Spectra, Interstellar Extinction, Stellar Luminosity, Stellar Temperature

Scientific paper

Ultraviolet spectra were obtained before and after the optical spectrum changed from absorption to emission lines. The continuum brightness dropped by a factor of 2. Spectra with bright continua show N V, Si IV, and C IV in absorption, while the spectrum with fainter continuum has these lines in emission. The emission lines of N V and Si IV are anomalously bright compared with C IV. The brighter spectra indicate an effective temperatury of 25,000 K, while the fainter continuum indicates a somewhat lower temperature. Probable interstellar absorption lines due to galactic halo and the LMC interstellar medium are observed.

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