TESS Delivers Five New Hot Giant Planets Orbiting Bright Stars from the Full-frame Images
- Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824 (United States)
- Center for Astrophysics - Harvard & Smithsonian, 60 Garden St., Cambridge, MA 02138 (United States)
- Department of Astronomy, University of Wisconsin-Madison, Madison, WI 53706 (United States)
- Geneva Observatory, University of Geneva, Chemin des Mailettes 51, 1290 Versoix (Switzerland)
- Centre for Astrophysics, University of Southern Queensland, West St., Toowoomba, QLD 4350 (Australia)
- Facultad de Ingeniería y Ciencias, Universidad Adolfo Ibáñez, Av. Diagonal las Torres 2640, Peñalolén, Santiago (Chile)
- Department of Physical Sciences, Kutztown University, Kutztown, PA 19530 (United States)
- Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139 (United States)
- Caltech IPAC—NASA Exoplanet Science Institute 1200 E. California Ave., Pasadena, CA 91125 (United States)
- Department of Physics and Astronomy, Vanderbilt University, Nashville, TN 37235 (United States)
- Astrophysics Group, Keele University, Staffordshire ST5 5BG (United Kingdom)
- Department of Astronomy, The Ohio State University, 140 West 18th Ave., Columbus, OH 43210 (United States)
- Liberal Arts and Science Academy, Austin, Texas 78724 (United States)
We present the discovery and characterization of five hot and warm Jupiters—TOI-628 b (TIC 281408474; HD 288842), TOI-640 b (TIC 147977348), TOI-1333 b (TIC 395171208, BD+47 3521A), TOI-1478 b (TIC 409794137), and TOI-1601 b (TIC 139375960)—based on data from NASA’s Transiting Exoplanet Survey Satellite (TESS). The five planets were identified from the full-frame images and were confirmed through a series of photometric and spectroscopic follow-up observations by the TESS Follow-up Observing Program Working Group. The planets are all Jovian size (R {sub P} = 1.01–1.77 R {sub J}) and have masses that range from 0.85 to 6.33 M {sub J}. The host stars of these systems have F and G spectral types (5595 ≤ T {sub eff} ≤ 6460 K) and are all relatively bright (9.5 < V < 10.8, 8.2 < K < 9.3), making them well suited for future detailed characterization efforts. Three of the systems in our sample (TOI-640 b, TOI-1333 b, and TOI-1601 b) orbit subgiant host stars (log g < 4.1). TOI-640 b is one of only three known hot Jupiters to have a highly inflated radius (R {sub P} > 1.7 R {sub J}, possibly a result of its host star’s evolution) and resides on an orbit with a period longer than 5 days. TOI-628 b is the most massive, hot Jupiter discovered to date by TESS with a measured mass of 6.31{sub −0.30}{sup +0.28} M {sub J} and a statistically significant, nonzero orbital eccentricity of e = 0.074{sub −0.022}{sup +0.021}. This planet would not have had enough time to circularize through tidal forces from our analysis, suggesting that it might be remnant eccentricity from its migration. The longest-period planet in this sample, TOI-1478 b (P = 10.18 days), is a warm Jupiter in a circular orbit around a near-solar analog. NASA’s TESS mission is continuing to increase the sample of well-characterized hot and warm Jupiters, complementing its primary mission goals.
- OSTI ID:
- 23159198
- Journal Information:
- The Astronomical Journal (Online), Vol. 161, Issue 4; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1538-3881
- Country of Publication:
- United States
- Language:
- English
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