TOI 564 b and TOI 905 b: grazing and fully transiting hot Jupiters discovered by TESS

Davis, Allen B. and Wang, Songhu and Jones, Matias and Eastman, Jason D. and Gunther, Maximilian N. and Stassun, Keivan G. and Addison, Brett C. ORCID: https://orcid.org/0000-0003-3216-0626 and Collins, Karen A. and Quinn, Samuel N. and Latham, David W. and Trifonov, Trifon and Shahaf, Sahar and Mazeh, Tsevi and Kane, Stephen R. and Narita, Norio and Wang, Xian-Yu and Tan, Thiam-Guan and Ciardi, David R. and Tokovinin, Andrei and Ziegler, Carl and Tronsgaard, Rene and Millholland, Sarah and Cruz, Bryndis and Berlind, Perry and Calkins, Michael L. and Esquerdo, Gilbert A. and Collins, Kevin I. and Conti, Dennis M. and Murgas, Felipe and Evans, Phil and Lewin, Pablo and Radford, Don J. and Paredes, Leonardo A. and Henry, Todd J. and James, Hodari-Sadiki and Lund, Michael B. and Christiansen, Jessie L. and Law, Nicholas M. and Mann, Andrew W. and Briceno, Cesar and Parviainen, Hannu and Palle, Enric and Watanabe, Noriharu and Ricker, George R. and Vanderspek, Roland and Seager, Sara and Winn, Joshua N. and Jenkins, Jon M. and Krishnamurthy, Akshata and Batalha, Natalie M. and Burt, Jennifer and Colon, Knicole D. and Dynes, Scott and Caldwell, Douglas A. and Morris, Robert and Henze, Christopher E. and Fischer, Debra A. (2020) TOI 564 b and TOI 905 b: grazing and fully transiting hot Jupiters discovered by TESS. The Astronomical Journal, 160 (5):229. ISSN 0004-6256


Abstract

We report the discovery and confirmation of two new hot Jupiters discovered by the Transiting Exoplanet Survey Satellite (TESS): TOI 564 b and TOI 905 b. The transits of these two planets were initially observed by TESS with orbital periods of 1.651 and 3.739 days, respectively. We conducted follow-up observations of each system from the ground, including photometry in multiple filters, speckle interferometry, and radial velocity measurements. For TOI 564 b, our global fitting revealed a classical hot Jupiter with a mass of ${1.463}_{-0.096}^{+0.10}$ M<SUB>J</SUB> and a radius of ${1.02}_{-0.29}^{+0.71}$ R<SUB>J</SUB>. Also a classical hot Jupiter, TOI 905 b has a mass of ${0.667}_{-0.041}^{+0.042}$ M<SUB>J</SUB> and radius of ${1.171}_{-0.051}^{+0.053}$ R<SUB>J</SUB>. Both planets orbit Sun-like, moderately bright, mid-G dwarf stars with V ∼ 11. While TOI 905 b fully transits its star, we found that TOI 564 b has a very high transit impact parameter of ${0.994}_{-0.049}^{+0.083}$ , making it one of only ∼20 known systems to exhibit a grazing transit and one of the brightest host stars among them. Therefore, TOI 564 b is one of the most attractive systems to search for additional nontransiting, smaller planets by exploiting the sensitivity of grazing transits to small changes in inclination and transit duration over a timescale of several years.


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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: 02 Feb 2021 06:33
Last Modified: 08 Feb 2021 07:07
Uncontrolled Keywords: exoplanet astronomy; exoplanet detection methods; radial velocity; transit photometry; extrasolar gas giants; hot Jupiters; 486; 489; 1332; 1709; 509; 753; astrophysics; Earth and planetary astrophysics; solar and stellar astrophysics
Fields of Research (2008): 02 Physical Sciences > 0201 Astronomical and Space Sciences > 020110 Stellar Astronomy and Planetary Systems
Fields of Research (2020): 51 PHYSICAL SCIENCES > 5101 Astronomical sciences > 510109 Stellar astronomy and planetary systems
Socio-Economic Objectives (2008): E Expanding Knowledge > 97 Expanding Knowledge > 970102 Expanding Knowledge in the Physical Sciences
Socio-Economic Objectives (2020): 28 EXPANDING KNOWLEDGE > 2801 Expanding knowledge > 280120 Expanding knowledge in the physical sciences
Identification Number or DOI: https://doi.org/10.3847/1538-3881/aba49d
URI: http://eprints.usq.edu.au/id/eprint/40622

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