Details

Autor(en) / Beteiligte

• Nielsen, L. D.
• Bouchy, F.
• Turner, O.
• Giles, H.
• Mascareño, A. Suárez
• Lovis, C.
• Marmier, M.
• Pepe, F.
• Ségransan, D.
• Udry, S.
• Otegi, J. F.
• Ottoni, G.
• Stalport, M.
• Ricker, G.
• Vanderspek, R.
• Latham, D. W.
• Seager, S.
• Winn, J. N.
• Jenkins, J. M.
• Kane, S. R.
• Wittenmyer, R. A.
• Bowler, B.
• Crossfield, I.
• Horner, J.
• Kielkopf, J.
• Morton, T.
• Plavchan, P.
• Tinney, C. G.
• Zhang, Hui
• Wright, D. J.
• Mengel, M. W.
• Clark, J. T.
• Okumura, J.
• Addison, B.
• Caldwell, D. A.
• Cartwright, S. M.
• Collins, K. A.
• Francis, J.
• Guerrero, N.
• Huang, C. X.
• Matthews, E. C.
• Pepper, J.
• Rose, M.
• Villaseñor, J.
• Wohler, B.
• Stassun, K.
• Howell, S.
• Ciardi, D.
• Gonzales, E.
• Matson, R.
• Beichman, C.
• Schlieder, J.

Titel

A Jovian planet in an eccentric 11.5 day orbit around HD 1397 discovered by TESS

Ist Teil von

• Astronomy and astrophysics (Berlin), 2019-03, Vol.623, p.A100

Ort / Verlag

EDP Sciences

Erscheinungsjahr

2019

Link zum Volltext

Quelle

Elektronische Zeitschriftenbibliothek

Beschreibungen/Notizen

• The Transiting Exoplanet Survey Satellite TESS has begun a new age of exoplanet discoveries around bright host stars. We present the discovery of HD 1397b (TOI-120.01), a giant planet in an 11.54-day eccentric orbit around a bright (V = 7.9) G-type subgiant. We estimate both host star and planetary parameters consistently using EXOFASTv2 based on TESS time-series photometry of transits and radial velocity measurements with CORALIE and MINERVA-Australis. We also present high angular resolution imaging with NaCo to rule out any nearby eclipsing binaries. We find that HD 1397b is a Jovian planet, with a mass of 0.415 ± 0.020 MJ and a radius of 1.026 ± 0.026 RJ. Characterising giant planets in short-period eccentric orbits, such as HD 1397b, is important for understanding and testing theories for the formation and migration of giant planets as well as planet-star interactions.