New variable chemically peculiar stars (Paunzen+ 1998)

Details New variable chemically peculiar stars (Paunzen+ 1998) New variable chemically peculiar stars (Paunzen+ 1998)

Oct 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998ycat..41330001p&link_type=abstract

VizieR On-line Data Catalog: J/A+AS/133/1. Originally published in: 1998A&AS..133....1P

Astronomy and Astrophysics

Astrophysics

Stars: Peculiar, Stars: Variable, Rotational Velocities

Scientific paper

Since variability of chemically peculiar (CP) stars plays an important role for the astrophysical explanation of their outstanding behaviour, we have identified new variable CP stars listed in Renson's catalogue using the extensive Hipparcos Variability Annex. From the 293 objects found, 33 were excluded because they are not CP stars and/or have no period listed, half of the remaining stars are newly identified and half had been already included in the catalogue of variable CP stars by Catalano & Renson (1997, Cat. ). Most of the newly identified variability is due to an apparent magnetic field coupled with stellar rotation (oblique rotator model). The constraints of this model are fulfilled for all but three CP2 stars. Variations of bona fide Am-Fm stars are exclusively explained by eclipses of binary systems. Furthermore eight candidates of the gamma Doradus group (pulsating Am-Fm stars) were detected. Table 1 (table1.dat) presents the newly identified chemically peculiar stars. (1 data file).

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