A hot terrestrial planet orbiting the bright M dwarf L 168-9 unveiled by TESS
Article
Article Title | A hot terrestrial planet orbiting the bright M dwarf L 168-9 |
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ERA Journal ID | 1050 |
Article Category | Article |
Authors | Astudillo-Defru, N. (Author), Cloutier, R. (Author), Wang, S. X. (Author), Teske, J. (Author), Brahm, R. (Author), Hellier, C. (Author), Ricker, G. (Author), Vanderspek, R. (Author), Latham, D. (Author), Seager, S. (Author), Winn, J. N. (Author), Jenkins, J. M. (Author), Collins, K. A. (Author), Stassun, K. G. (Author), Ziegler, C. (Author), Almenara, J. M. (Author), Anderson, D. R. (Author), Artigau, E. (Author), Bonfils, X. (Author), Bouchy, F. (Author), Briceno, C. (Author), Butler, R. P. (Author), Charbonneau, D. (Author), Conti, D. M. (Author), Crane, J. (Author), Crossfield, I. J. M. (Author), Davies, M. (Author), Delfosse, X. (Author), Diaz, R. F. (Author), Doyon, R. (Author), Dragomir, D. (Author), Eastman, J. D. (Author), Espinoza, N. (Author), Essack, Z. (Author), Feng, F. (Author), Figueira, P. (Author), Forveille, T. (Author), Gan, T. (Author), Glidden, A. (Author), Guerrero, N. (Author), Hart, R. (Author), Henning, Th. (Author), Horch, E. P. (Author), Isopi, G. (Author), Jenkins, J. S. (Author), Jordan, A. (Author), Kielkopf, J. F. (Author), Law, N. (Author), Lovis, C. (Author), Mallia, F. (Author), Mann, A. W. (Author), de Medeiros, J. R. (Author), Melo, C. (Author), Mennickent, R. E. (Author), Mignon, L. (Author), Murgas, F. (Author), Nusdeo, D. A. (Author), Pepe, F. (Author), Relles, H. M. (Author), Rose, M. (Author), Santos, N. C. (Author), Segransan, D. (Author), Shectman, S. (Author), Shporer, A. (Author), Smith, J. C. (Author), Torres, P. (Author), Udry, S. (Author), Villasenor, J. (Author), Winters, J. G. (Author) and Zhou, G. (Author) |
Journal Title | Astronomy and Astrophysics: a European journal |
Journal Citation | 636, pp. 1-13 |
Article Number | A58 |
Number of Pages | 13 |
Year | 2020 |
Publisher | EDP Sciences |
Place of Publication | France |
ISSN | 0004-6361 |
1432-0746 | |
Digital Object Identifier (DOI) | https://doi.org/10.1051/0004-6361/201937179 |
Web Address (URL) | https://www.aanda.org/articles/aa/full_html/2020/04/aa37179-19/aa37179-19.html |
Abstract | We report the detection of a transiting super-Earth-sized planet (R = 1.39 ± 0.09 R⊕ ) in a 1.4-day orbit around L 168-9 (TOI-134), a bright M1V dwarf (V = 11, K = 7.1) located at 25.15 ± 0.02 pc. The host star was observed in the first sector of the Transiting Exoplanet Survey Satellite (TESS) mission. For confirmation and planet mass measurement purposes, this was followed up with ground-based photometry, seeing-limited and high-resolution imaging, and precise radial velocity (PRV) observations using the HARPS and Magellan/PFS spectrographs. By combining the TESS data and PRV observations, we find the mass of L 168-9 b to be 4.60 ± 0.56 M⊕ and thus the bulk density to be 1.74-0.33+0.44 times higher than that of the Earth. The orbital eccentricity is smaller than 0.21 (95% confidence). This planet is a level one candidate for the TESS mission's scientific objective of measuring the masses of 50 small planets, and it is one of the most observationally accessible terrestrial planets for future atmospheric characterization. |
Keywords | stars: individual: L 168-9; planetary systems; stars: late-type; techniques: photometric; techniques: radial velocities; Astrophysics - Earth and Planetary Astrophysics; Astrophysics - Solar and Stellar; Astrophysics |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
Institution of Origin | University of Southern Queensland |
Byline Affiliations | Catholic University of the Most Holy Conception (UCSC), Chile |
Center for Astrophysics Harvard and Smithsonian, United States | |
Carnegie Institution of Washington, United States | |
Pontifical Catholic University of Chile, Chile | |
Keele University, United Kingdom | |
Massachusetts Institute of Technology, United States | |
Princeton University, United States | |
NASA Ames Research Center, United States | |
Vanderbilt University, United States | |
University of Toronto, Canada | |
Grenoble Alpes University, France | |
University of Montreal, Canada | |
University of Geneva, Switzerland | |
Cerro Tololo Inter-American Observatory, Chile | |
American Association of Variable Star Observers, United States | |
University of Buenos Aires, Argentina | |
University of New Mexico, United States | |
Space Telescope Science Institute, United States | |
European Southern Observatory (ESO), Chile | |
Tsinghua University, China | |
Centre for Astrophysics | |
Max Planck Society, Germany | |
Southern Connecticut State University, United States | |
Campo Catino Astronomical Observatory, Italy | |
University of Chile, Chile | |
Millennium Institute of Astrophysics, Chile | |
University of Louisville, United States | |
University of North Carolina, United States | |
Federal University of Rio Grande do Norte, Brazil | |
Paranal Observatory, Chile | |
University of Concepcion, Chile | |
Georgia State University, United States | |
University of Porto, Portugal |
https://research.usq.edu.au/item/q6x24/a-hot-terrestrial-planet-orbiting-the-bright-m-dwarf-l-168-9-unveiled-by-tess
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