Astron. Astrophys. Suppl. Ser. 136, 111-115

uvby photometry of the mCP stars HD 35298, 19 Lyrae, HD 192678, and HR 8216

S.J. Adelman and R.H. Rice

Send offprint request: S.J. Adelman

Department of Physics, The Citadel, 171 Moultrie Street, Charleston SC 29409, U.S.A.

Received October 26; accepted December 12, 1998

Abstract:

Differential Strömgren uvby observations from the Four College Automated Photoelectric Telescope are presented for the mCP stars HD 35298, 19 Lyr, HD 192678, and HR 8216. The period for HD 35298 of 1.85457 days is a revision of North's value while that for 19 Lyr of 7.0980 days is alias of that found by Winzer. HD 192678 is found to be a small amplitude photometric variable with the 6.4186 day period proposed by Leroy from polarization measurements. For HR 8216, observations taken between 1995 and 1998 confirm that the star has remained constant at least since 1990.

Key words: stars: individual: HD 35298; 19 Lyr, HD 192678; HR 8216 -- stars: chemically peculiar