A Transiting Warm Giant Planet around the Young Active Star TOI-201

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 ground-based photometry from Next Generation Transit Survey and radial velocities from FER...

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Bibliographic Details
Published in:The Astronomical journal 2021-05, Vol.161 (5), p.235
Main Authors: Hobson, Melissa J., Brahm, Rafael, Jordán, Andrés, Espinoza, Nestor, Kossakowski, Diana, Henning, Thomas, Rojas, Felipe, Schlecker, Martin, Sarkis, Paula, Trifonov, Trifon, Thorngren, Daniel, Binnenfeld, Avraham, Shahaf, Sahar, Zucker, Shay, Ricker, George R., Latham, David W., Seager, S., Winn, Joshua N., Jenkins, Jon M., Addison, Brett, Bouchy, François, Bowler, Brendan P., Briegal, Joshua T., Bryant, Edward M., Collins, Karen A., Daylan, Tansu, Grieves, Nolan, Horner, Jonathan, Huang, Chelsea, Kane, Stephen R., Kielkopf, John, McLean, Brian, Mengel, Matthew W., Nielsen, Louise D., Okumura, Jack, Jones, Matias, Plavchan, Peter, Shporer, Avi, Smith, Alexis M. S., Tilbrook, Rosanna, Tinney, C. G., Twicken, Joseph D., Udry, Stéphane, Unger, Nicolas, West, Richard, Wittenmyer, Robert A., Wohler, Bill, Torres, Pascal, Wright, Duncan J.
Format: Article
Language:English
Subjects:
Astronomy
Exoplanet astronomy
Exoplanet detection methods
Extrasolar planets
F stars
Jupiter
Photometry
Planet detection
Planet formation
Planetary evolution
Polls & surveys
Radial velocity
Saturn
Stellar activity
Transit
Transit photometry
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Summary: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 ground-based photometry from Next Generation Transit Survey and radial velocities from FEROS, HARPS, CORALIE, and Minerva -Australis. TOI-201 b orbits a young ( ) and bright ( V = 9.07 mag) F-type star with a 52.9781 day period. The planet has a mass of , a radius of , and an orbital eccentricity of 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.
ISSN:0004-6256
1538-3881
DOI:10.3847/1538-3881/abeaa1