The absolute magnitudes of the Bp-Ap stars

Details The absolute magnitudes of the Bp-Ap stars The absolute magnitudes of the Bp-Ap stars

Nov 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26a...206...74m&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 206, no. 1, Nov. 1988, p. 74-78.

Astronomy and Astrophysics

Astrophysics

6

A Stars, B Stars, Peculiar Stars, Stellar Composition, Stellar Magnitude, Astronomical Photometry, Bolometers, Stellar Motions

Scientific paper

The influence of the specific flux distribution of the CP2 stars on their M(v) determination is shown. The CP2 stars have less UV flux and a larger visible flux compared to normal stars with the same T(eff). They have smaller Balmer jump than normal ones. It is emphasized that M(bol) is the only relevant parameter for comparing the brightnesses of CP2 stars with those of normal ones. The relationships between the T(eff) and M(bol) and M(v) are determined for the CP2 stars, and it is concluded that the peculiar stars have brighter M(V) than normal stars with the same T(eff). On the other hand, if a CP2 star and a normal one have the same visible photometric indices, they do not have the same T(eff); moreover, M(v) is fainter for the CP2 stars. These findings are used to explain the discrepancies between M(v) obtained for the CP2 stars in open clusters and those derived directly by North (1984) and by Grenier et al. (1981, 1985).

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