دورية أكاديمية
The GAPS Programme at TNG. XXXVII. A precise density measurement of the young ultra-short period planet TOI-1807 b
| العنوان: | The GAPS Programme at TNG. XXXVII. A precise density measurement of the young ultra-short period planet TOI-1807 b |
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| المؤلفون: | D. Nardiello, L. Malavolta, S. Desidera, M. Baratella, V. D'Orazi, S. Messina, K. Biazzo, S. Benatti, M. Damasso, V. M. Rajpaul, A. S. Bonomo, R. Capuzzo Dolcetta, M. Mallonn, B. Cale, P. Plavchan, M. El Mufti, A. Bignamini, F. Borsa, I. Carleo, R. Claudi, E. Covino, A. F. Lanza, J. Maldonado, L. Mancini, G. Micela, E. Molinari, M. Pinamonti, G. Piotto, E. Poretti, G. Scandariato, A. Sozzetti, G. Andreuzzi, W. Boschin, R. Cosentino, A. F. M. Fiorenzano, A. Harutyunyan, C. Knapic, M. Pedani, L. Affer, A. Maggio, M. Rainer |
| المساهمون: | Nardiello, D, Malavolta, L, Desidera, S, Baratella, M, D'Orazi, V, Messina, S, Biazzo, K, Benatti, S, Damasso, M, Rajpaul, Vm, Bonomo, A, Capuzzo Dolcetta, R, Mallonn, M, Cale, B, Plavchan, P, El Mufti, M, Bignamini, A, Borsa, F, Carleo, I, Claudi, R, Covino, E, Lanza, Af, Maldonado, J, Mancini, L, Micela, G, Molinari, E, Pinamonti, M, Piotto, G, Poretti, E, Scandariato, G, Sozzetti, A, Andreuzzi, G, Boschin, W, Cosentino, R, Fiorenzano, Afm, Harutyunyan, A, Knapic, C, Pedani, M, Affer, L, Maggio, A, Rainer, M |
| بيانات النشر: | EDP SCIENCES S A |
| سنة النشر: | 2022 |
| المجموعة: | Universitá degli Studi di Roma "Tor Vergata": ART - Archivio Istituzionale della Ricerca |
| مصطلحات موضوعية: | planets and satellites: fundamental parameters, stars: fundamental parameters, stars: individual: BD+39 2643, techniques: photometric, techniques: spectroscopic, techniques: radial velocities, Settore FIS/05 - ASTRONOMIA E ASTROFISICA |
| الوصف: | Context. Great strides have been made in recent years in the understanding of the mechanisms involved in the formation and evolution of planetary systems. Despite this, many observational findings have not yet been corroborated by astrophysical explanations. A fine contribution to the study of planetary formation processes comes from the study of young, low-mass planets, with short orbital periods (<100 days). In the last three years, the NASA/TESS satellite has identified many planets of this kind and their characterization is clearly necessary in order to understand how they formed and evolved.Aims. Within the framework of the Global Architecture of Planetary System (GAPS) project, we performed a validation and characterization (radius and mass) of the ultra-short period planet TOI-1807 b, which orbits its young host star BD+39 2643 (similar to 300 Myr) in only 13 h. This is the youngest ultra-short period planet discovered so far.Methods. Thanks to a joint modeling of the stellar activity and planetary signals in the TESS light curve and in new HARPS-N radial-velocity measurements, combined with accurate estimation of stellar parameters, we validated the planetary nature of TOI-1807 b and measured its orbital and physical parameters.Results. By using astrometric, photometric, and spectroscopic observations, we found that BD+39 2643 is a young, active K dwarf star and a member of a 300 +/- 80 Myr old moving group. Furthermore, it rotates in P-rot = 8.8 +/- 0.1 days. This star hosts an ultra-short period planet, exhibiting an orbital period of only P-b = 0.54937 +/- 0.00001 days. Thanks to the exquisite photometric and spectroscopic series, along with the accurate information on its stellar activity, we measured both the radius and the mass of TOI-1807 b with high precision, obtaining R-P(,b) = 1.37 +/- 0.09 R-circle plus and M-P(,h) = 2.57 +/- 0.50 M-circle plus. These planet parameters correspond to a rocky planet with an Earth-like density (rho(b) = 1.0 +/- 0.3 rho(circle plus)) and no extended H/He ... |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| العلاقة: | info:eu-repo/semantics/altIdentifier/wos/WOS:000847065300005; volume:664; numberofpages:33; journal:ASTRONOMY & ASTROPHYSICS; https://hdl.handle.net/2108/316745Test; info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85141300839 |
| DOI: | 10.1051/0004-6361/202243743 |
| الإتاحة: | https://doi.org/10.1051/0004-6361/202243743Test https://hdl.handle.net/2108/316745Test |
| حقوق: | info:eu-repo/semantics/openAccess |
| رقم الانضمام: | edsbas.76E96278 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1051/0004-6361/202243743 |
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