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Title:
TESS Discovery of a Transiting Super-Earth in the pi Mensae System
Authors:
Huang, Chelsea X.; Burt, Jennifer; Vanderburg, Andrew; Günther, Maximilian N.; Shporer, Avi; Dittmann, Jason A.; Winn, Joshua N.; Wittenmyer, Rob; Sha, Lizhou; Kane, Stephen R.; Ricker, George R.; Vanderspek, Roland K.; Latham, David W.; Seager, Sara; Jenkins, Jon M.; Caldwell, Douglas A.; Collins, Karen A.; Guerrero, Natalia; Smith, Jeffrey C.; Quinn, Samuel N.; Udry, Stéphane; Pepe, Francesco; Bouchy, François; Ségransan, Damien; Lovis, Christophe; Ehrenreich, David; Marmier, Maxime; Mayor, Michel; Wohler, Bill; Haworth, Kari; Morgan, Edward H.; Fausnaugh, Michael; Ciardi, David R.; Christiansen, Jessie; Charbonneau, David; Dragomir, Diana; Deming, Drake; Glidden, Ana; Levine, Alan M.; McCullough, P. R.; Yu, Liang; Narita, Norio; Nguyen, Tam; Morton, Tim; Pepper, Joshua; Pál, András; Rodriguez, Joseph E.; Stassun, Keivan G.; Torres, Guillermo; Sozzetti, Alessandro; Doty, John P.; Christensen-Dalsgaard, Jørgen; Laughlin, Gregory; Clampin, Mark; Bean, Jacob L.; Buchhave, Lars A.; Bakos, G. Á.; Sato, Bun’ei; Ida, Shigeru; Kaltenegger, Lisa; Palle, Enric; Sasselov, Dimitar; Butler, R. P.; Lissauer, Jack; Ge, Jian; Rinehart, S. A.
Affiliation:
AA(Department of Physics, and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA ; 0000-0003-0918-7484), AB(Department of Physics, and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA ; 0000-0002-0040-6815), AC(Department of Astronomy, The University of Texas at Austin, Austin, TX 78712, USA ; 0000-0001-7246-5438), AD(Department of Physics, and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA ;), AE(Department of Physics, and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA 0000-0002-1836-3120), AF(Earth and Planetary Sciences, MIT, 77 Massachusetts Avenue, Cambridge, MA 02139, USA ; 0000-0001-7730-2240), AG(Department of Astrophysical Sciences, Princeton University, 4 Ivy Lane, Princeton, NJ 08544, USA 0000-0002-4265-047X), AH(University of Southern Queensland, West Street, Darling Heights QLD 4350, Australia 0000-0001-9957-9304), AI(Department of Physics, and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA), AJ(Department of Earth Sciences, University of California, Riverside, CA 92521, USA 0000-0002-7084-0529), AK(Department of Physics, and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA), AL(Department of Physics, and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA 0000-0001-6763-6562), AM(Harvard–Smithsonian Center for Astrophysics, Harvard University, Cambridge, MA 02138, USA 0000-0001-9911-7388), AN(Department of Physics, and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA; Earth and Planetary Sciences, MIT, 77 Massachusetts Avenue, Cambridge, MA 02139, USA), AO(NASA Ames Research Center, Moffett Field, CA, 94035, USA 0000-0002-4715-9460), AP(NASA Ames Research Center, Moffett Field, CA, 94035, USA; SETI Institute, Mountain View, CA 94043, USA), AQ(Harvard–Smithsonian Center for Astrophysics, Harvard University, Cambridge, MA 02138, USA 0000-0001-6588-9574), AR(Department of Physics, and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA), AS(SETI Institute, Mountain View, CA 94043, USA), AT(NASA Ames Research Center, Moffett Field, CA, 94035, USA 0000-0002-8964-8377), AU(Observatoire de l’Université de Genève, 51 chemin des Mail-lettes, 1290 Versoix, Switzerland), AV(Observatoire de l’Université de Genève, 51 chemin des Mail-lettes, 1290 Versoix, Switzerland), AW(Observatoire de l’Université de Genève, 51 chemin des Mail-lettes, 1290 Versoix, Switzerland), AX(Observatoire de l’Université de Genève, 51 chemin des Mail-lettes, 1290 Versoix, Switzerland), AY(Observatoire de l’Université de Genève, 51 chemin des Mail-lettes, 1290 Versoix, Switzerland), AZ(Observatoire de l’Université de Genève, 51 chemin des Mail-lettes, 1290 Versoix, Switzerland 0000-0001-9704-5405), BA(Observatoire de l’Université de Genève, 51 chemin des Mail-lettes, 1290 Versoix, Switzerland), BB(Observatoire de l’Université de Genève, 51 chemin des Mail-lettes, 1290 Versoix, Switzerland), BC(NASA Ames Research Center, Moffett Field, CA, 94035, USA; SETI Institute, Mountain View, CA 94043, USA), BD(Department of Physics, and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA), BE(Department of Physics, and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA 0000-0003-1447-6344), BF(Department of Physics, and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA), BG(NASA Exoplanet Science Institute, Caltech/IPAC-NExScI, 1200 East California Boulevard, Pasadena, CA 91125, USA), BH(NASA Exoplanet Science Institute, Caltech/IPAC-NExScI, 1200 East California Boulevard, Pasadena, CA 91125, USA 0000-0002-8035-4778), BI(Harvard–Smithsonian Center for Astrophysics, Harvard University, Cambridge, MA 02138, USA 0000-0002-9003-484X), BJ(Department of Physics, and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA; 0000-0003-2313-467X), BK(Department of Astronomy, University of Maryland at College Park, College Park MD, 20742, USA), BL(Department of Physics, and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA; Earth and Planetary Sciences, MIT, 77 Massachusetts Avenue, Cambridge, MA 02139, USA 0000-0002-5322-2315), BM(Department of Physics, and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA), BN(Department of Physics and Astronomy, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218, USA 0000-0001-9165-9799), BO(Department of Physics, and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA 0000-0003-1667-5427), BP(Department of Astronomy, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan ; Astrobiology Center, National Astronomical Observatory of Japan, NINS, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan ; JST, PRESTO, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan ; Instituto de Astrofísica de Canarias (IAC), E-38205 La Laguna, Tenerife, Spain ; National Astronomical Observatory of Japan, NINS, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan 0000-0001-8511-2981), BQ(Department of Physics, and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA), BR(Department of Astrophysical Sciences, Princeton University, 4 Ivy Lane, Princeton, NJ 08544, USA 0000-0002-8537-5711), BS(Department of Physics, Lehigh University, 16 Memorial Drive East, Bethlehem, PA 18015, USA 0000-0002-3827-8417), BT(Department of Physics, and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA; Department of Astronomy, Loránd Eötvös University, Pázmány P. stny. 1/A, Budapest H-1117, Hungary ; Konkoly Observatory, Research Centre for Astronomy and Earth Sciences, Hungarian Academy of Sciences, Konkoly Thege Miklós út 15-17, H-1121 Budapest, Hungary 0000-0001-5449-2467), BU(Harvard–Smithsonian Center for Astrophysics, Harvard University, Cambridge, MA 02138, USA 0000-0001-8812-0565), BV(Vanderbilt University, Department of Physics & Astronomy, 6301 Stevenson Center Ln., Nashville, TN 37235, USA 0000-0002-3481-9052), BW(Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA 0000-0002-5286-0251), BX(INAF—Osservatorio Astrofisico di Torino, Via Osservatorio 20, 10025 Pino Torinese, Italy 0000-0002-7504-365X), BY(Noqsi Aerospace Ltd., 2822 South Nova Road, Pine, CO 80470, USA), BZ(Stellar Astrophysics Centre, Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus C, Denmark), CA(Department of Astronomy, Yale University, New Haven, CT 06517, USA 0000-0002-3253-2621), CB(NASA Goddard Space Flight Center, 8800 Greenbelt Road, Greenbelt, MD 20771, USA), CC(Department of Astronomy & Astrophysics, University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637, USA), CD(DTU Space, National Space Institute, Technical University of Denmark, Elektrovej 328, DK-2800 Kgs. Lyngby, Denmark), CE(Department of Astrophysical Sciences, Princeton University, NJ 08544, USA ; MTA Distinguished Guest Fellow, Konkoly Observatory, Hungary ; 0000-0001-7204-6727), CF(Department of Earth and Planetary Sciences, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551, Japan), CG(Earth-Life Science Institute, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo 152-8550, Japan), CH(Carl Sagan Institute at Cornell University, 302 Space Science Building, Ithaca, NY 14853, USA), CI(Instituto de Astrofisica de Canarias, Via Lactea sn, 38200, La Laguna, Tenerife, Spain), CJ(Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA 0000-0001-7014-1771), CK(Carnegie Institution for Science, Department of Terrestrial Magnetism, 5241 Broad Branch Road NW, Washington, DC 20015, USA), CL(Space Science & Astrobiology Division, NASA Ames Research Center, Moffett Field, CA 94035, USA), CM(Astronomy Department, University of Florida, 211 Bryant Space Science Center, P.O. Box 112055, Gainesville, FL 32611-2055, USA), CN(NASA Goddard Space Flight Center, 8800 Greenbelt Road, Greenbelt, MD 20771, USA)
Publication:
The Astrophysical Journal Letters, Volume 868, Issue 2, article id. L39, 8 pp. (2018). (ApJL Homepage)
Publication Date:
12/2018
Origin:
IOP
Astronomy Keywords:
planetary systems, planets and satellites: detection, stars: individual: HD 39091, TIC 261136679
DOI:
10.3847/2041-8213/aaef91
Bibliographic Code:
2018ApJ...868L..39H

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 yr 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 High-Accuracy Radial-velocity Planet Searcher and Anglo-Australian Telescope/University College London Echelle Spectrograph 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.
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