Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989esasp.296..473v&link_type=abstract
In ESA, The 23rd ESLAB Symposium on Two Topics in X ray Astronomy. Volume 1: X ray Binaries p 473-475 (SEE N90-25711 19-89)
Astronomy and Astrophysics
Astronomy
8
Astronomical Spectroscopy, Light Curve, X Ray Binaries, X Ray Spectroscopy, Balmer Series, Companion Stars, H Lines, Stellar Spectra, Variability
Scientific paper
A series of spectra of the optical counterpart of 3S0114+65, taken in November 1986, show a sudden increase of a factor three in the equivalent widths of the hydrogen lines. Spectra taken in 1987 show only mild variability, such as changes in the line profiles of the hydrogen lines. EXOSAT observations of the source show a variable X-ray intensity. The spectrum is hard, with variable adsorption. The possible pulse period of 14.9 minutes is not confirmed. The nature of 3S0114+65 remains unclear.
van Kerkwijk Marten Henric
Waters Laurens B. F. M.
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