A transiting warm giant planet around the young active star TOI-201
作者： Robert A. Wittenmyer , Joseph D. Twicken , John Kielkopf , Bill Wohler , Rafael Brahm
DOI:
关键词: Evolution theories 、 Physics 、 Astrophysics 、 Star (game theory) 、 Orbital eccentricity 、 Planet 、 Photometry (astronomy) 、 Giant planet 、 Active star 、 Radius
摘要: We present the confirmation of eccentric warm giant planet TOI-201 b, first identified as a candidate in \textit{TESS} photometry (Sectors 1-8, 10-13, and 27-28) confirmed using ground-based from NGTS radial velocities FEROS, HARPS, CORALIE, \textsc{Minerva}-Australis. b orbits young ($\mathrm{0.87^{+0.46}_{-0.49} \, Gyr}$) bright(V=9.07 mag) F-type star with $\mathrm{52.9781 d}$ period. The has mass $\mathrm{0.42^{+0.05}_{-0.03}\, M_J}$, radius $\mathrm{1.008^{+0.012}_{-0.015}\, R_J}$, an orbital eccentricity $0.28^{+0.06}_{-0.09}$; it appears to still be undergoing fairly rapid cooling, expected given youth host star. also shows long-term variability both several activity indicators, which we attribute stellar activity. discovery characterization planets such is important for constraining formation evolution theories planets.
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