Photometric investigation and rapid periodicity of RR Tau

Journal Article · Sun Jul 01 04:00:00 EDT 1979 · Astrophysics (Engl. Transl.); (United States)

DOI:https://doi.org/10.1007/BF01006092· OSTI ID:5722224

Zaitseva, G V; Liutyi, V M

Results are given for photoelectric UBV, photographic B, and infrared RJHK observations of the variable Be star RR Tau, which is 8 arcmin from the transient x-ray source A0535 + 26. The total amplitude of the variability of the star in the period 1967 to 1978 reaches 4 mag. The changes in the color indices are appreciable (0.3 to 0.6 mag), but are not correlated with the brightness, although, on the average, the star is somewhat bluer at maximum light. Photometry in the U filter with a time resolution of 10 sec revealed the presence of a rapid (of the order of one minute) variability of the star with amplitude of about 10%. The rapid variability contains a periodic component with amplitude 2% and P 47 sec, which is close to one of the harmonics (46 sec) of the x-ray pulsar.

• Research Organization: Moskovskii Gosudarstvennyi Universitet, Krymskaya Stantsiya, Ukrainian SSR
• OSTI ID: 5722224
• Journal Information: Astrophysics (Engl. Transl.); (United States), Journal Name: Astrophysics (Engl. Transl.); (United States) Vol. 15:1; ISSN ATPYA
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
640103 -- Astrophysics & Cosmology-- Quasi-Stellar
Radio
& X-Ray Sources-- (-1987)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COSMIC RADIO SOURCES
EQUIPMENT
PHOTOMETRY
PULSARS
RADIATION SOURCES
STARS
VARIABLE STARS
VARIATIONS
X-RAY EQUIPMENT
X-RAY SOURCES