Discovery and mass measurement of the hot, transiting, Earth-sized planet, GJ 3929 b
Article
Article Title | Discovery and mass measurement of the hot, transiting, Earth-sized planet, GJ 3929 b |
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ERA Journal ID | 1050 |
Article Category | Article |
Authors | Kemmer, J. (Author), Dreizler, S. (Author), Kossakowski, D. (Author), Stock, S. (Author), Quirrenbach, A. (Author), Caballero, J. A. (Author), Amado, P. J. (Author), Collins, K. A. (Author), Espinoza, N. (Author), Herrero, E. (Author), Jenkins, J. M. (Author), Latham, D. W. (Author), Lillo-Box, J. (Author), Narita, N. (Author), Palle, E. (Author), Reiners, A. (Author), Ribas, I. (Author), Ricker, G. (Author), Rodriguez, E. (Author), Seager, S. (Author), Vanderspek, R. (Author), Wells, R. (Author), Winn, J. (Author), Aceituno, F. J. (Author), Bejar, V. J. S. (Author), Barclay, T. (Author), Bluhm, P. (Author), Chaturvedi, P. (Author), Cifuentes, C. (Author), Collins, K. I. (Author), Cortes-Contreras, M. (Author), Demory, B. -O. (Author), Fausnaugh, M. M. (Author), Fukui, A. (Author), Chew, Y. Gomez Maqueo (Author), Galadi-Enriquez, D. (Author), Gan, T. (Author), Gillon, M. (Author), Golovin, A. (Author), Hatzes, A. P. (Author), Henning, Th. (Author), Huang, C. (Author), Jeffers, S. V. (Author), Kaminski, A. (Author), Kunimoto, M. (Author), Kurster, M. (Author), Lopez-Gonzalez, M. J. (Author), Lafarga, M. (Author), Luque, R. (Author), McCormac, J. (Author), Molaverdikhani, K. (Author), Montes, D. (Author), Morales, J. C. (Author), Passegger, V. M. (Author), Reffert, S. (Author), Sabin, L. (Author), Schofer, P. (Author), Schanche, N. (Author), Schlecker, M. (Author), Schroffenegger, U. (Author), Schwarz, R. P. (Author), Schweitzer, A. (Author), Sota, A. (Author), Tenenbaum, P. (Author), Trifonov, T. (Author), Vanaverbeke, S. (Author) and Zechmeister, M. (Author) |
Journal Title | Astronomy and Astrophysics: a European journal |
Journal Citation | 659, pp. 1-23 |
Article Number | A17 |
Number of Pages | 23 |
Year | 2022 |
Publisher | EDP Sciences |
Place of Publication | France |
ISSN | 0004-6361 |
1432-0746 | |
Digital Object Identifier (DOI) | https://doi.org/10.1051/0004-6361/202142653 |
Web Address (URL) | https://www.aanda.org/articles/aa/abs/2022/03/aa42653-21/aa42653-21.html |
Abstract | We report the discovery of GJ 3929 b, a hot Earth-sized planet orbiting the nearby M3.5 V dwarf star, GJ 3929 (G 180-18, TOI-2013). Joint modelling of photometric observations from TESS sectors 24 and 25 together with 73 spectroscopic observations from CARMENES and follow-up transit observations from SAINT-EX, LCOGT, and OSN yields a planet radius of Rb = 1.150 ± 0.040 R⊕, a mass of Mb = 1.21 ± 0.42 M⊕, and an orbital period of Pb = 2.6162745 ± 0.0000030 d. The resulting density of ρb = 4.4 ± 1.6 g cm-3 is compatible with the Earth's mean density of about 5.5 g cm-3. Due to the apparent brightness of the host star (J = 8.7 mag) and its small size, GJ 3929 b is a promising target for atmospheric characterisation with the JWST. Additionally, the radial velocity data show evidence for another planet candidate with P[c] = 14.303 ± 0.035 d, which is likely unrelated to the stellar rotation period, Prot = 122 ± 13 d, which we determined from archival HATNet and ASAS-SN photometry combined with newly obtained TJO data. |
Keywords | Planetary systems; Planets and satellites: Detection; Stars: Individual: GJ 3929; Stars: Late-type; Techniques: Photometric; Techniques: Radial velocities; Astrophysics - Earth and Planetary Astrophysics |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Institution of Origin | University of Southern Queensland |
Byline Affiliations | Heidelberg University, Germany |
Georg August University of Gottingen, Germany | |
Max Planck Society, Germany | |
European Space Astronomy Centre, Spain | |
Spanish National Research Council, Spain | |
Center for Astrophysics Harvard and Smithsonian, United States | |
Space Telescope Science Institute, United States | |
Institute of Space Sciences, Spain | |
NASA Ames Research Center, United States | |
Astrobiology Center, Spain | |
University of Tokyo, Japan | |
Institute of Astrophysics of the Canary Islands, Spain | |
Massachusetts Institute of Technology, United States | |
Institute of Astrophysics of Andalusia, Spain | |
University of Bern, Switzerland | |
Princeton University, United States | |
NASA Goddard Space Flight Center, United States | |
Karl Schwarzschild Observatory, Germany | |
George Mason University, United States | |
National Autonomous University of Mexico, Mexico | |
Calar Alto Observatory, Spain | |
Tsinghua University, China | |
University of Liege, Belgium | |
Autonomous University of Barcelona, Spain | |
University of Warwick, United Kingdom | |
Complutense University of Madrid, Spain | |
Hamburg Observatory, Germany | |
Patashnick Voorheesville Observatory, United States | |
Association for Astronomy, Belgium |
https://research.usq.edu.au/item/q724x/discovery-and-mass-measurement-of-the-hot-transiting-earth-sized-planet-gj-3929-b
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