The high-galactic-latitude O-type star HD 93521

Details The high-galactic-latitude O-type star HD 93521 The high-galactic-latitude O-type star HD 93521

May 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977ap%26ss..48..483h&link_type=abstract

Astrophysics and Space Science, vol. 48, no. 2, May 1977, p. 483-489. Research supported by the Consiglio Nazionale delle Ricer

Astronomy and Astrophysics

Astrophysics

10

Binary Stars, Galactic Structure, Neutron Stars, O Stars, Stellar Models, Supernova Remnants, Early Stars, Latitude, Spectrum Analysis, Stellar Evolution, Stellar Motions, Stellar Spectra

Scientific paper

The spectrum of the peculiar O9 star HD 93521 is studied and compared with those of the standard stars 10 Lac and AE Aur. Several possibilities are examined which might explain the high galactic latitude of this star, corresponding to a vertical distance of more than 750 pc, and its slight helium excess. It is suggested that HD 93521 is a 'runaway' binary system composed of the O9 star plus a neutron star left over from a supernova explosion.

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