Photoelectric photometry of chemically peculiar stars at the Catania Astrophysical Observatory. II - Observations of the CP3 stars HD 3322, HD 27295 and HD 89822

Details Photoelectric photometry of chemically peculiar stars at the Catania Astrophysical Observatory. II - Observations of the CP3 stars HD 3322, HD 27295 and HD 89822 Photoelectric photometry of chemically peculiar stars at the Catania Astrophysical Observatory. II - Observations of the CP3 stars HD 3322, HD 27295 and HD 89822

Apr 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26a...244..327c&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 244, no. 2, April 1991, p. 327-334.

Astronomy and Astrophysics

Astrophysics

8

Astronomical Photometry, Light Curve, Peculiar Stars, Stellar Composition, Astronomical Observatories, Electrophotometry, Ephemeris Time, Periodic Variations, Stellar Magnitude, Cp Stars, Light Variability, Hd 3322, Hd 27295, Hd 89822

Scientific paper

Photoelectric observations of three CP3 stars carried out from 1969 to 1975 at the Catania Astrophysical Observatory in the UBV natural system are presented. The star HD 3322 has been discovered to be variable and a period of 4.6904 days has been established. The period of HD 27295 has been improved to the value of 4.4248 days. The photometric variability of HD 89822 has also been discovered and a period of 7.5586 days has been established which is substantially different from the known spectroscopic binary period of 11.5791 days. In the case of HD 89822 the effect of the secondary component upon the light variations is studied and it is shown that its influence is negligible. The similarity between CP3 and CP2 stars is also discussed.

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