CPD -71 deg 172, a new binary with a hot subdwarf

Details CPD -71 deg 172, a new binary with a hot subdwarf CPD -71 deg 172, a new binary with a hot subdwarf

Sep 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987msngr..49....2v&link_type=abstract

ESO Messenger (ISSN 0722-6691), Sept. 1987, p. 2, 3.

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Astronomical Photography, Binary Stars, Dwarf Stars, Hot Stars, Stellar Spectra, Lyman Alpha Radiation, Magellanic Clouds, Stellar Oscillations

Scientific paper

In the region of the Small Magellanic Cloud, photographed with the Very Wide Field Camera flown aboard Spacelab-1 in December 1983, a well-defined star-like object was observed with no other counterpart than a cool star, and was tentatively identified as the CPD -71 deg 172, an FO star with magnitudes M(V) of about 10.5 and m(B) of about 10.9. From these values, the 195 nm magnitude was normally expected to be about 12.3, the value which significantly exceeds the estimaged magnitude of 8. This large excess indicates a possibility of a hot subluminous companion to the cool primary. A first low-resolution UV spectrum obtained by the IUE satellite confirmed the existence in the CPD -71 deg 172 of a very hot subdwarf companion.

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