1. TESS DISCOVERY OF A TRANSITING SUPER-EARTH IN THE π MENSAE SYSTEM.
- Author
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Huang CX, Burt J, Vanderburg A, Günther MN, Shporer A, Dittmann JA, Winn JN, Wittenmyer R, Sha L, Kane SR, Ricker GR, Vanderspek RK, Latham DW, Seager S, Jenkins JM, Caldwell DA, Collins KA, Guerrero N, Smith JC, Quinn SN, Udry S, Pepe F, Bouchy F, Ségransan D, Lovis C, Ehrenreich D, Marmier M, Mayor M, Wohler B, Haworth K, Morgan EH, Fausnaugh M, Ciardi DR, Christiansen J, Charbonneau D, Dragomir D, Deming D, Glidden A, Levine AM, McCullough PR, Yu L, Narita N, Nguyen T, Morton T, Pepper J, Pál A, and Rodriguez JE
- Abstract
We report the detection of a transiting planet around π Men (HD 39091), using data from the Transiting Exoplanet Survey Satellite ( TESS ). The solar-type host star is unusually bright ( V = 5.7) and was already known to host a Jovian planet on a highly eccentric, 5.7-year orbit. The newly discovered planet has a size of 2.04 ± 0.05 R
⊕ and an orbital period of 6.27 days. Radial-velocity data from the HARPS and AAT/UCLES archives also displays a 6.27-day periodicity, confirming the existence of the planet and leading to a mass determination of 4.82±0.85 M⊕ . The star's proximity and brightness will facilitate further investigations, such as atmospheric spectroscopy, asteroseismology, the Rossiter-McLaughlin effect, astrometry, and direct imaging.- Published
- 2018
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