Year: 2020
Type: article
Abstract: We report the detection of a transiting hot Neptune exoplanet orbiting TOI-824 ( SCR J1448-5735 ), a nearby (d = 64 pc) K4V star, using data from the Transiting Exoplanet Survey Satellite. The newly discovered planet has a radius R p = 2.93 ± 0.20 and an orbital period of 1.393 days. Radial velocity measurements using the Planet Finder Spectrograph and the High Accuracy Radial velocity Planet Searcher spectrograph confirm the existence of the planet, and we estimate its mass to be 18.47 ± 1.84 . The planet’s mean density is = 4.03 , making it more than twice as dense as Neptune. TOI-824 b 's high equilibrium temperature makes the planet likely to have a cloud-free atmosphere, and thus it is an excellent candidate for follow-up atmospheric studies. The detectability of TOI-824 b’s atmosphere from both ground and space is promising and could lead to the detailed characterization of the most irradiated small planet at the edge of the hot Neptune desert that has retained its atmosphere to date.
Source: The Astronomical Journal
Authors: Jennifer A. Burt, Louise D. Nielsen, Samuel N. Quinn, Eric E. Mamajek, Elisabeth C. Matthews, George Zhou, Julia V. Seidel, Chelsea X. Huang, Eric Lopez, Maritza Soto, Jon Otegi, Keivan G. Stassun, Laura Kreidberg, Karen A. Collins, Jason D. Eastman, Joseph E. Rodriguez, Andrew Vanderburg, Samuel P. Halverson, Johanna K. Teske, Sharon X. Wang, R. Paul Butler, François Bouchy, Xavier Dumusque, Damien Segransen, Stephen A. Shectman, Jeffrey D. Crane, Fabo Feng, Benjamin T. Montet, Adina D. Feinstein, Yuri Beletski, Erin Flowers, Maximilian N. Günther, Tansu Daylan, Kevin I. Collins, Dennis M. Conti, Tianjun Gan, Eric L. N. Jensen, John F. Kielkopf, Thiam-Guan Tan, Ravit Helled, Caroline Dorn, Jonas Haldemann, Jack J. Lissauer, George R. Ricker, Roland Vanderspek, David W. Latham, S. Seager, Joshua N. Winn, Jon M. Jenkins, Joseph D. Twicken, Jeffrey C. Smith, Peter Tenenbaum, Scott Cartwright, Thomas Barclay, Joshua Pepper, Gilbert Esquerdo, William Fong
Institutions: Jet Propulsion Laboratory, Massachusetts Institute of Technology, University of Geneva, Smithsonian Institution, Center for Astrophysics Harvard & Smithsonian, California Institute of Technology, Goddard Space Flight Center, Queen Mary University of London, University of Zurich, Vanderbilt University, Fisk University, George Mason University, Harvard University, University of Wisconsin–Madison, Carnegie Institution for Science, Carnegie Observatories, Earth and Planets Laboratory, UNSW Sydney, University of Chicago, Las Campanas Observatory, Princeton University, American Association of Variable Star Observers, Tsinghua University, Swarthmore College, University of Louisville, Perth Exoplanet Survey Telescope Observatory, University of Bern, Ames Research Center, Search for Extraterrestrial Intelligence, University of Maryland, Baltimore County, Lehigh University
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
Funders: National Science Foundation, National Aeronautics and Space Administration, California Institute of Technology, Space Telescope Science Institute, European Space Agency, European Commission, Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung, European Southern Observatory, Ames Research Center, Jet Propulsion Laboratory
Awards: Formation and Evolution of planetary systems, Phasenübergänge und Instabilitäten, G433322167, THE MULTI-MISSION ARCHIVE AT SPACE TELESCOPE SCIENCE INSTITUTE (MAST) IS NASA'S ARCHIVE CENTER FOR OPTICAL/UV SPACE ASTROPHYSICS DATA. MAST PROVIDE, G58316358, G6273510985, G6775420319, Nucleo Cellulare - Ibernazione - Immunocitochimica., Graduate Research Fellowship Program (GRFP)
OpenAlex ID: W3080241981