FCAPT uvby Photometry of the mCP Stars HD 86592, HR 4330, HR 6958, and HR 7786

Details FCAPT uvby Photometry of the mCP Stars HD 86592, HR 4330, HR 6958, and HR 7786 FCAPT uvby Photometry of the mCP Stars HD 86592, HR 4330, HR 6958, and HR 7786

Apr 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008pasp..120..367a&link_type=abstract

The Publications of the Astronomical Society of the Pacific, Volume 120, Issue 866, pp. 367-373.

Astronomy and Astrophysics

Astronomy

1

Stars

Scientific paper

New differential Strömgren uvby Four College Automated Photoelectric Telescope (FCAPT) observations of four magnetic CP stars HD 86592, HR 4330, HR 6958, and HR 7786 are presented. These observations are analyzed along with published FCAPT data to improve the periods and the light curves. The period of HD 86592 is that of Babel & North, 2.886669 days. The new periods of HR 4330, HR 6958, and HR 7786 are 3.152, 18.0642, and 8.5295 days, respectively, almost the same as their previous values from FCAPT data. The first three stars can be characterized as having constant light curves and periods. However, the small differences among the seasonal light curves of HR 7786 indicate it is a star whose rotational axis is precessing about its magnetic axis.

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