Discovery and mass measurement of the hot, transiting, Earth-sized planet, GJ 3929 b
Article
Kemmer, J., Dreizler, S., Kossakowski, D., Stock, S., Quirrenbach, A., Caballero, J. A., Amado, P. J., Collins, K. A., Espinoza, N., Herrero, E., Jenkins, J. M., Latham, D. W., Lillo-Box, J., Narita, N., Palle, E., Reiners, A., Ribas, I., Ricker, G., Rodriguez, E., ..., Zechmeister, M.. 2022. "Discovery and mass measurement of the hot, transiting, Earth-sized planet, GJ 3929 b." Astronomy and Astrophysics: a European journal. 659, pp. 1-23. https://doi.org/10.1051/0004-6361/202142653
| Article Title | Discovery and mass measurement of the hot, transiting, Earth-sized planet, GJ 3929 b |
|---|---|
| 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 |
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