Optical identification of the supersoft X-ray source 1E 0035.4 in the Small Magellanic Cloud

Details Optical identification of the supersoft X-ray source 1E 0035.4 in the Small Magellanic Cloud Optical identification of the supersoft X-ray source 1E 0035.4 in the Small Magellanic Cloud

Sep 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994a%26a...289l..11o&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 289, no. 1, p. L11-L14

Astronomy and Astrophysics

Astrophysics

20

Accretion Disks, Binary Stars, Magellanic Clouds, Ultraviolet Spectra, Variable Stars, Visible Spectrum, White Dwarf Stars, X Ray Sources, Light Curve, Radiant Flux Density, Red Shift, Spectrum Analysis, Stellar Spectrophotometry

Scientific paper

We report the identification of the optical counterpart of the Small Magellanic Cloud (SMC) super-soft X-ray source 1E0035.4- 7230 with a variable star of the magnitude B = 19.9-20.2 within the 40 arcsecs Einstein error box. The star shows strong UV excess, a hot, blue continuum and weak lines of high ionization. The lines are red-shifted by 3-4 A, indicating SMC membership. This object appears similar to CAL 83 and CAL 87 and is probably a binary system hosting an accreting, hydrogen burning white dwarf.

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