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Author  |
Hobson, MJ.; Brahm, R.; Jordan, A .; Espinoza, N.; Kossakowski, D.; Henning, T.; Rojas, F.; Schlecker, M.; Sarkis, P.; Trifonov, T.; Thorngren, D.; Binnenfeld, A.; Shahaf, S.; Zucker, S.; Ricker, GR.; Latham, DW.; Seager, S.; Winn, JN.; Jenkins, JM.; Addison, B.; Bouchy, F.; Bowler, BP.; Briegal, JT.; Bryant, EM.; Collins, KA.; Daylan, T.; Grieves, N.; Horner, J.; Huang, CL.; Kane, SR.; Kielkopf, J.; McLean, B.; Mengel, MW.; Nielsen, LD.; Okumura, J.; Jones, M.; Plavchan, P.; Shporer, A.; Smith, AMS.; Tilbrook, R.; Tinney, CG.; Twicken, JD.; Udry, S.; Unger, N.; West, R.; Wittenmyer, RA.; Wohler, B.; Torres, P.; Wright, DJ. |
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A Transiting Warm Giant Planet around the Young Active Star TOI-201 |
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2021 |
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Astronomical Journal |
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Astron. J. |
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161 |
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5 |
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235 |
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MAGNETIC ACTIVITY; ERROR-CORRECTION; EXOPLANETS; ROTATION; TEMPERATURES; EVOLUTION; VELOCITY; SYSTEMS; TOOL |
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Abstract |
We present the confirmation of the eccentric warm giant planet TOI-201 b, first identified as a candidate in Transiting Exoplanet Survey Satellite photometry (Sectors 1-8, 10-13, and 27-28) and confirmed using groundbased photometry from Next Generation Transit Survey and radial velocities from FEROS, HARPS, CORALIE, and MINERVA-Australis. TOI-201 b orbits a young (0.87(-0.49)(+0.46)) and bright (V = 9.07 mag) F-type star with a 52.9781 day period. The planet has a mass of 0.42(-0.03)(+0.05) M-J, a radius of 1.008(-0.015)(+0.012) R-J, and an orbital eccentricity of 0.28(-0.09)(+0.06); it appears to still be undergoing fairly rapid cooling, as expected given the youth of the host star. The star also shows long-term variability in both the radial velocities and several activity indicators, which we attribute to stellar activity. The discovery and characterization of warm giant planets such as TOI-201 b are important for constraining formation and evolution theories for giant planets. |
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0004-6256 |
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WOS:000645139000001 |
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UAI @ alexi.delcanto @ |
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1381 |
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