Multicolour time series photometry of the T Tauri star CVSO 30
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Date
2015
Authors
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Journal ISSN
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Publisher
Oxford University Press
Abstract
Five consecutive runs of at least five hours, and two shorter runs, of V(RI)C time series
photometry of CVSO 30 are presented. No evidence could be seen for planetary transits,
previously claimed in the literature for this star. The photometry described in this paper, as
well as earlier observations, can be modelled by two non-sinusoidal periodicities of 8 and
10.8 h (frequencies 3 and 2.23 d−1) or their 1 d−1 aliases. The possibility is discussed that
star-spots at different latitudes of a differentially rotating star is responsible for the brightness
modulations. The steep wavelength dependence of the variability amplitudes is best described
by hot star-spots.
Description
Keywords
Astronomy, Photometry, South African Astronomical Observatory (SAAO), Palomar Transit Factory (PTF), High-resolution spectroscopy, Young Exoplanet Transit Initiative, Catalina Sky Survey (CSS), CVSO 30 (2MASS J05250755+0134243)
Citation
Koen, C. (2015). Multicolour time series photometry of the T Tauri star CVSO 30. Monthly Notices of the Royal Astronomical Society, 450 (4): 3991-3998.