Optical Spectra of HE:3-640 / A:1118-61 / after the 1992JAN X-Ray Outburst

Details Optical Spectra of HE:3-640 / A:1118-61 / after the 1992JAN X-Ray Outburst Optical Spectra of HE:3-640 / A:1118-61 / after the 1992JAN X-Ray Outburst

Jun 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...273l..49p&link_type=abstract

Astronomy and Astrophysics, Vol.273, NO. 2/JUNII, P. L49, 1993

Astronomy and Astrophysics

Astrophysics

12

Be Stars, X-Ray Sources, X-Ray Binaries, Stars: Individual (He 3-640)

Scientific paper

We have performed spectroscopic observations of the peculiar Be star He 3-640, the suggested optical counterpart of the hard X-ray source A 1118-61, soon after the January 1992 outburst. Our data show that changes have taken place in the blue spectral region when compared to similar data obtained in 1990, thus comfirming the association between the two objects. They also show the presence of material expanding at a velocity ≃1350 km/s. A strong night-to-night spectral variability is also present.

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