TESS Discovery of a Transiting Super-Earth in the pi Mensae System

Huang, Chelsea X. ORCID: https://orcid.org/0000-0003-0918-7484 and Burt, Jennifer and Vanderburg, Andrew and Gunther, Maximilian N. and Shporer, Avi and Dittmann, Jason A. and Winn, Joshua N. and Wittenmyer, Rob and Sha, Lizhou and Kane, Stephen R. and Ricker, George R. and Vanderspek, Roland K. and Latham, David W. and Seager, Sara and Jenkins, Jon M. and Caldwell, Douglas A. and Collins, Karen A. and Guerrero, Natalia and Smith, Jeffrey C. and Quinn, Samuel N. and Udry, Stephane and Pepe, Francesco and Bouchy, Francois and Segransan, Damien and Lovis, Christophe and Ehrenreich, David and Marmier, Maxime and Mayor, Michel and Wohler, Bill and Haworth, Kari and Morgan, Edward H. and Fausnaugh, Michael and Ciardi, David R. and Christiansen, Jessie and Charbonneau, David and Dragomir, Diana and Deming, Drake and Glidden, Ana and Levine, Alan M. and McCullough, P. R. and Yu, Liang and Narita, Norio and Nguyen, Tam and Morton, Tim and Pepper, Joshua and Pal, Andras and Rodriguez, Joseph E. and Stassun, Keivan G. and Torres, Guillermo and Sozzetti, Alessandro and Doty, John P. and Christensen-Dalsgaard, Jorgen and Laughlin, Gregory and Clampin, Mark and Bean, Jacob L. and Buchhave, Lars A. and Bakos, G. A. and Sato, Bun'ei and Ida, Shigeru and Kaltenegger, Lisa and Palle, Enric and Sasselov, Dimitar and Butler, R. P. and Lissauer, Jack and Ge, Jian and Rinehart, S. A. (2018) TESS Discovery of a Transiting Super-Earth in the pi Mensae System. The Astrophysical Journal Letters, 868 (2):L39. pp. 1-8. ISSN 2041-8205

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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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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Published version deposited in accordance with the copyright policy of the publisher.
Faculty/School / Institute/Centre: Historic - Faculty of Health, Engineering and Sciences - School of Agricultural, Computational and Environmental Sciences (1 Jul 2013 - 5 Sep 2019)
Faculty/School / Institute/Centre: Historic - Faculty of Health, Engineering and Sciences - School of Agricultural, Computational and Environmental Sciences (1 Jul 2013 - 5 Sep 2019)
Date Deposited: 31 Mar 2022 03:39
Last Modified: 17 May 2022 01:37
Uncontrolled Keywords: planetary systems; planets and satellites: detection; stars: individual (HD 39091 TIC 261136679); Astrophysics - Earth and Planetary Astrophysics
Fields of Research (2020): 51 PHYSICAL SCIENCES > 5101 Astronomical sciences > 510109 Stellar astronomy and planetary systems
Identification Number or DOI: https://doi.org/10.3847/2041-8213/aaef91
URI: http://eprints.usq.edu.au/id/eprint/47413

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