Details

Autor(en) / Beteiligte

• Gan, Tianjun
• Bedell, Megan
• Wang, Sharon Xuesong
• Foreman-Mackey, Daniel
• Meléndez, Jorge
• Mao, Shude
• Stassun, Keivan G
• Howell, Steve B
• Ziegler, Carl
• Wittenmyer, Robert A
• Hellier, Coel
• Collins, Karen A
• Shporer, Avi
• Ricker, George R
• Vanderspek, Roland
• Latham, David W
• Seager, Sara
• Winn, Joshua N
• Jenkins, Jon M
• Addison, Brett C
• Ballard, Sarah
• Barclay, Thomas
• Bean, Jacob L
• Bowler, Brendan P
• Briceño, César
• Crossfield, Ian J M
• Dittman, Jason
• Horner, Jonathan
• Jensen, Eric L N
• Kane, Stephen R
• Kielkopf, John
• Kreidberg, Laura
• Law, Nicholas
• Mann, Andrew W
• Mengel, Matthew W
• Morgan, Edward H
• Okumura, Jack
• Osborn, Hugh P
• Paegert, Martin
• Plavchan, Peter
• Schwarz, Richard P
• Shiao, Bernie
• Smith, Jeffrey C
• Spina, Lorenzo
• Tinney, C G
• Torres, Guillermo
• Twicken, Joseph D
• Vezie, Michael
• Wang, Gavin
• Wright, Duncan J
• Zhang, Hui

Titel

HD 183579b: a warm sub-Neptune transiting a solar twin detected by TESS

Ist Teil von

• Monthly notices of the Royal Astronomical Society, 2021-10, Vol.507 (2), p.2220-2240

Ort / Verlag

Oxford University Press

Erscheinungsjahr

2021

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• ABSTRACT We report the discovery and characterization of a transiting warm sub-Neptune planet around the nearby bright (V = 8.75 mag, K = 7.15 mag) solar twin HD 183579, delivered by the Transiting Exoplanet Survey Satellite (TESS). The host star is located 56.8 ± 0.1 pc away with a radius of R* = 0.97 ± 0.02 R⊙ and a mass of M* = 1.03 ± 0.05 M⊙. We confirm the planetary nature by combining space and ground-based photometry, spectroscopy, and imaging. We find that HD 183579b (TOI-1055b) has a radius of Rp = 3.53 ± 0.13 R⊕ on a 17.47 d orbit with a mass of Mp = 11.2 ± 5.4 M⊕ (3σ mass upper limit of 27.4 M⊕). HD 183579b is the fifth brightest known sub-Neptune planet system in the sky, making it an excellent target for future studies of the interior structure and atmospheric properties. By performing a line-by-line differential analysis using the high-resolution and signal-to-noise ratio HARPS spectra, we find that HD 183579 joins the typical solar twin sample, without a statistically significant refractory element depletion.