Exoplanet astronomy; Exoplanet systems; Exoplanet detection methods; Astrophysics - Instrumentation and Methods for Astrophysics
Abstract :
[en] NASA's Transiting Exoplanet Survey Satellite (TESS) is an all-sky survey mission designed to find transiting exoplanets orbiting nearby bright stars. It has identified more than 329 transiting exoplanets, and almost 6000 candidates remain unvalidated. In this manuscript, we discuss the findings from the ongoing Validation of Transiting Exoplanets using Statistical Tools (VaTEST) project, which aims to validate new exoplanets for further characterization. We validated 11 new exoplanets by examining the light curves of 24 candidates using the LATTE and TESS-Plot tools and computing the false-positive probabilities using the statistical validation tool TRICERATOPS. These include planets suitable for atmospheric characterization using transmission spectroscopy (TOI-2194b), emission spectroscopy (TOI-3082b and TOI-5704b) and for both transmission and emission spectroscopy (TOI-672b, TOI-1694b, and TOI-2443b). Our validated planets have one super-Earth (TOI-2194b) orbiting a bright (V = 8.42 mag), metal-poor ([Fe/H] = -0.3720 ± 0.1) star, and one short-period Neptune-like planet (TOI-5704) in the hot-Neptune desert. In total, we validated one super-Earth, seven sub-Neptunes, one Neptune-like, and two sub-Saturn or super-Neptune-like exoplanets. Additionally, we identify five likely planet candidates (TOI-323, TOI-1180, TOI-2200, TOI-2408, and TOI-3913), which can be further studied to establish their planetary nature.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Mistry, Priyashkumar; National Institute of Technology Surat, India
Pathak, Kamlesh; National Institute of Technology Surat, India
Prasad, Aniket; National Institute of Technology Agartala, India
Lekkas, Georgios; University of Ioannina, Department of Physics
Bhattarai, Surendra; Department of Physics, Indian Institute of Science Education and Research Kolkata, Mohanpur-741246, West Bengal, India
Gharat, Sarvesh; Centre for Machine Intelligence and Data Science, Indian Institute of Technology Bombay, India
Maity, Mousam; Presidency University, Calcutta, India
Kumar, Dhruv; National Institute of Technology Agartala, India
Collins, Karen A.; Harvard Smithsonian Center for Astrophysics
Schwarz, Richard P.; Harvard Smithsonian Center for Astrophysics
Mann, Christopher R.; Département de physique, Université de Montréal, 1375 Avenue Thérèse-Lavoie-Roux, Montréal, Québec, H3T 1J4, Canada, Trottier Institute for Research on Exoplanets ( iREx ), Canada
Furlan, Elise; Infrared Processing and Analysis Center
Howell, Steve B.; NASA Ames Research Center
Ciardi, David; Infrared Processing and Analysis Center
Bieryla, Allyson; Harvard Smithsonian Center for Astrophysics
Matthews, Elisabeth C.; Max-Planck-Institute for Astronomy, Heidelberg
Gonzales, Erica; University of California, Santa Cruz, Department of Astronomy and Astrophysics
Ziegler, Carl; Stephen F Austin State University, Texas
Crossfield, Ian; Department of Physics &, Astronomy, University of Kansas, KS 66045, USA
Giacalone, Steven; University of California, Berkeley, Department of Astronomy
Tan, Thiam-Guan; Perth Exoplanet Survey Telescope, Perth, Western Australia, Australia, Curtin Institute of Radio Astronomy, Curtin University, Bentley, Western Australia 6102, Australia
Evans, Phil; El Sauce Observatory, Coquimbo Province, Chile
Hełminiak, Krzysztof G.; Nicolaus Copernicus Astronomical Center, Warsaw
Collins, Kevin I.; George Mason University, Virginia
Narita, Norio; University of Tokyo, Japan, Center for Astrobiology, Madrid, Astrophysical Institute of the Canaries
Fukui, Akihiko; University of Tokyo, Japan, Astrophysical Institute of the Canaries
Pozuelos, Francisco J.; Institute of Astrophysics of Andalusia
Dressing, Courtney; University of California, Berkeley, Department of Astronomy
Soubkiou, Abderahmane; University Cadi Ayyad, Morocco
Benkhaldoun, Zouhair; University Cadi Ayyad, Morocco
Schlieder, Joshua E.; NASA Goddard Space Flight Center, Maryland
Suarez, Olga; Observatoire de la Cote d'Azur, France
Barkaoui, Khalid ; Université de Liège - ULiège > Département d'astrophysique, géophysique et océanographie (AGO) > Exoplanets in Transit: Identification and Characterization
Palle, Enric; Astrophysical Institute of the Canaries, University of La Laguna, Department of Astrophysics
Murgas, Felipe; Astrophysical Institute of the Canaries, University of La Laguna, Department of Astrophysics
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