A perplexing binary system containing a supergiant Be star

Title:

A perplexing binary system containing a supergiant Be star

Creator:

Bolton, C. T. and Hurkens, R.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:d1149981-05ec-4bc6-915f-5d39cb2d5d4f
uuid:d1149981-05ec-4bc6-915f-5d39cb2d5d4f

Subject:

binary stars, Be stars, and massive stars

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

We report on detailed studies of the absorption line spectrum and spectroscopic orbit of the binary BN2.5Ib star HD 235679. We also give ao preliminary report on our study of the Hα emission line profiles from this perplexing system. Hipparcos and Tycho2 astrometric data allow us to place limits on the distance to the system. The lack of a measurable reflection effect in the Hipparcos photometry allows us to rule out the possibility that the massive invisible star is cool and fills its Roche lobe. Thus, by process of elimination, the invisible star must be hot or a black hole. The properties of the Hα profiles suggest that the invisible star is somewhat hotter, and has a stronger wind than HD235679.

Language:

Czech

Rights:

http://creativecommons.org/publicdomain/mark/1.0/
policy:public

Coverage:

[23]-27

Source:

Publications of the Astronomical Institute of the Academy of Sciences of the Czech Republic | 2001 Volume:89 | Number:89

Harvested from:

CDK

Metadata only:

false