TESS Spots a Compact System of Super-Earths around the Naked-eye Star HR 858

Vanderburg, Andrew and Huang, Chelsea X. and Rodriguez, Joseph E. and Becker, Juliette C. and Ricker, George R. and Vanderspek, Roland K. and Latham, David W. and Seager, Sara and Winn, Joshua N. and Jenkins, Jon M. and Addison, Brett and Bieryla, Allyson and Briceno, Cesar and Bowler, Brendan P. and Brown, Timothy M. and Burke, Christopher J. and Burt, Jennifer A. and Caldwell, Douglas A. and Clark, Jake T. and Crossfield, Ian and Dittmann, Jason A. and Dynes, Scott and Fulton, Benjamin J. and Guerrero, Natalia and Harbeck, Daniel and Horner, Jonathan and Kane, Stephen R. and Kielkopf, John and Kraus, Adam L. and Kreidberg, Laura and Law, Nicolas and Mann, Andrew W. and Mengel, Matthew W. and Morton, Timothy D. and Okumura, Jack and Pearce, Logan A. and Plavchan, Peter and Quinn, Samuel N. and Rabus, Markus and Rose, Mark E. and Rowden, Pam and Shporer, Avi and Siverd, Robert J. and Smith, Jeffrey C. and Stassun, Keivan and Tinney, C. G. and Wittenmyer, Rob and Wright, Duncan J. and Zhang, Hui and Zhou, George and Ziegler, Carl A. (2019) TESS Spots a Compact System of Super-Earths around the Naked-eye Star HR 858. The Astrophysical Journal, 881. L19-L29. ISSN 1538-4357

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Abstract

Transiting Exoplanet Survey Satellite (TESS) observations have revealed a compact multiplanet system around the sixth-magnitude star HR 858 (TIC 178155732, TOI 396), located 32 pc away. Three planets, each about twice the size of Earth, transit this slightly evolved, late F-type star, which is also a member of a visual binary. Two of the planets may be in mean motion resonance. We analyze the TESS observations, using novel methods to model and remove instrumental systematic errors, and combine these data with follow-up observations taken from a suite of ground- based telescopes to characterize the planetary system. The HR 858 planets are enticing targets for precise radial velocity observations, secondary eclipse spectroscopy, and measurements of the Rossiter- McLaughlin effect.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: ©American Institute of Physics
Faculty/School / Institute/Centre: Current - Institute for Advanced Engineering and Space Sciences - Centre for Astrophysics (1 Aug 2018 -)
Faculty/School / Institute/Centre: Current - Institute for Advanced Engineering and Space Sciences - Centre for Astrophysics (1 Aug 2018 -)
Date Deposited: 23 Jan 2020 23:46
Last Modified: 07 Feb 2020 01:58
Uncontrolled Keywords: planetary systems; planets and satellites: detection; stars:; individual: HR 858; TIC 178155732; Astrophysics - Earth and Planetary; Astrophysics; Astrophysics - Instrumentation and Methods for; Astrophysics; Astrophysics - Solar and Stellar Astrophysics
Fields of Research : 02 Physical Sciences > 0201 Astronomical and Space Sciences > 020110 Stellar Astronomy and Planetary Systems
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970102 Expanding Knowledge in the Physical Sciences
Identification Number or DOI: 10.3847/2041-8213/ab322d
URI: http://eprints.usq.edu.au/id/eprint/37412

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