TT ARIETIS - UBVRI light curves and the determination of the photometric period

Details TT ARIETIS - UBVRI light curves and the determination of the photometric period TT ARIETIS - UBVRI light curves and the determination of the photometric period

Mar 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26a...193...87v&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 193, no. 1-2, March 1988, p. 87-94.

Astronomy and Astrophysics

Astrophysics

9

Binary Stars, Electrophotometry, Light Curve, Stellar Spectra, Ubv Spectra, Novae, Photographic Plates, Stellar Oscillations

Scientific paper

Photoelectric UBVRI observations of the system TT Ari during the high state (V ≅ 10) have been acquired over a baseline of a month (October 1986). The observations are in favour of a period very stable in the course of the latest 25 years: the most probable period is 0.13298±0.00003 days, very close to the value given by Smak and Stepien (1975). Nevertheless, the observations cannot completely exclude a period P = 0.13232±0.00005 d, which corresponds closely to the most recent period determination by Semeniuk et al. (1987). The most probable interpretations of these contrasting trends are discussed. The authors look also for oscillations in the range 10 - 30 min: these are clearly present in each observing run.

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