YETI observations of the young transiting planet candidate CVSO 30 b
Abstract
CVSO 30 is a unique young low-mass system, because, for the first time, a close-in transiting and a wide directly imaged planet candidates are found around a common host star. The inner companion, CVSO 30 b, is the first possible young transiting planet orbiting a previously known weak-lined T-Tauri star. With five telescopes of the 'Young Exoplanet Transit Initiative' (YETI) located in Asia, Europe and South America we monitored CVSO 30 over three years in a total of 144 nights and detected 33 fading events. In two more seasons we carried out follow-up observations with three telescopes. We can confirm that there is a change in the shape of the fading event between different observations and that the fading event even disappears and reappears. A total of 38 fading event light curves were simultaneously modelled. We derived the planetary, stellar, and geometrical properties of the system and found them slightly smaller but in agreement with the values from the discovery paper. The period of the fading event was found to be 1.36 s shorter and 100 times more precise than the previous published value. If CVSO 30 b would be a giant planet on a precessing orbit, which we cannot confirm, yet, the precession period may be shorter than previously thought. But if confirmed as a planet it would be the youngest transiting planet ever detected and will provide important constraints on planet formation and migration time-scales.
Keywords
Cite
@article{arxiv.1605.05091,
title = {YETI observations of the young transiting planet candidate CVSO 30 b},
author = {St. Raetz and T. O. B. Schmidt and S. Czesla and T. Klocová and L. Holmes and R. Errmann and M. Kitze and M. Fernández and A. Sota and C. Briceño and J. Hernández and J. J. Downes and D. P. Dimitrov and D. Kjurkchieva and V. Radeva and Z. -Y. Wu and X. Zhou and H. Takahashi and T. Henych and M. Seeliger and M. Mugrauer and Ch. Adam and C. Marka and J. G. Schmidt and M. M. Hohle and Ch. Ginski and T. Pribulla and L. Trepl and M. Moualla and N. Pawellek and J. Gelszinnis and S. Buder and S. Masda and G. Maciejewski and R. Neuhäuser},
journal= {arXiv preprint arXiv:1605.05091},
year = {2016}
}
Comments
14 pages (20 with appendix), 7 figures (16 with appendix), 6 tables (7 with appendix)