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arXiv · 1907.11551

X-ray emission in the enigmatic CVSO 30 system

S. Czesla·P. C. Schneider·M. Salz·T. Klocova·T. O. B. Schmidt·J. H. M. M. Schmitt
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Abstract

CVSO 30 is a young, active, weak-line T Tauri star; it possibly hosts the only known planetary system with both a transiting hot-Jupiter and a cold-Jupiter candidate (CVSO 30 b and c). We analyzed archival ROSAT, Chandra, and XMM-Newton data to study the coronal emission in the system. According to our modeling, CVSO 30 shows a quiescent X-ray luminosity of about 8e29 erg/s. The X-ray absorbing column is consistent with interstellar absorption. XMM-Newton observed a flare, during which a transit of the candidate CVSO 30 b was expected, but no significant transit-induced variation in the X-ray flux is detectable. While the hot-Jupiter candidate CVSO 30 b has continuously been undergoing mass loss powered by the high-energy irradiation, we conclude that its evaporation lifetime is considerably longer than the estimated stellar age of 2.6 Myr.

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S. Czesla, P. C. Schneider, M. Salz, T. Klocova, T. O. B. Schmidt, J. H. M. M. Schmitt. 2019-07-26. X-ray emission in the enigmatic CVSO 30 system. https://doi.org/10.1051/0004-6361%2F201935351

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