The GAPS programme with HARPS-N at TNG VI. The curious case of TrES-4b

Autoria(s): Sozzetti, A.; Bonomo, A. S.; Biazzo, K.; Mancini, L.; Damasso, M.; Desidera, S.; Gratton, R.; Lanza, A. F.; Poretti, E.; Rainer, M.; Malavolta, L.; Affer, L.; Barbieri, M.; Bedin, L. R.; Boccato, C.; Bonavita, M.; Borsa, F.; Ciceri, S.; Claudi, R. U.; Gandolfi, D.; Giacobbe, P.; Henning, T.; Knapic, C.; Latham, D. W.; Lodato, G.; Maggio, A.; Maldonado, J.; Marzari, F.; Martinez Fiorenzano, A. F.; Micela, G.; Molinari, E.; Mordasini, Christoph; Nascimbeni, V.; Pagano, I.; Pedani, M.; Pepe, F.; Piotto, G.; Santos, N.; Scandariato, G.; Shkolnik, E.; Southworth, J.
Data(s)

01/03/2015
Resumo

We update the TrES-4 system parameters using high-precision HARPS-N radial-velocity measurements and new photometric light curves. A combined spectroscopic and photometric analysis allows us to determine a spectroscopic orbit with a semi-amplitude K = 51 +/- 3 ms(-1). The derived mass of TrES-4b is found to be M-p = 0.49 +/- 0.04 M-Jup, significantly lower than previously reported. Combined with the large radius (R-p = 1.84(-0.09)(+0.08) R-Jup) inferred from our analysis, TrES-4b becomes the transiting hot Jupiter with the second-lowest density known. We discuss several scenarios to explain the puzzling discrepancy in the mass of TrES-4b in the context of the exotic class of highly inflated transiting giant planets.
Formato

application/pdf

application/pdf
Identificador

http://boris.unibe.ch/81946/1/aa25570-14.pdf

http://boris.unibe.ch/81946/3/1501.06403v1.pdf

Sozzetti, A.; Bonomo, A. S.; Biazzo, K.; Mancini, L.; Damasso, M.; Desidera, S.; Gratton, R.; Lanza, A. F.; Poretti, E.; Rainer, M.; Malavolta, L.; Affer, L.; Barbieri, M.; Bedin, L. R.; Boccato, C.; Bonavita, M.; Borsa, F.; Ciceri, S.; Claudi, R. U.; Gandolfi, D.; ... (2015). The GAPS programme with HARPS-N at TNG VI. The curious case of TrES-4b. Astronomy and astrophysics, 575(L15), L15. EDP Sciences 10.1051/0004-6361/201425570 <http://dx.doi.org/10.1051/0004-6361/201425570>

doi:10.7892/boris.81946

info:doi:10.1051/0004-6361/201425570

urn:issn:0004-6361
Idioma(s)

eng
Publicador

EDP Sciences
Relação

http://boris.unibe.ch/81946/
Direitos

info:eu-repo/semantics/restrictedAccess

info:eu-repo/semantics/openAccess
Fonte

Sozzetti, A.; Bonomo, A. S.; Biazzo, K.; Mancini, L.; Damasso, M.; Desidera, S.; Gratton, R.; Lanza, A. F.; Poretti, E.; Rainer, M.; Malavolta, L.; Affer, L.; Barbieri, M.; Bedin, L. R.; Boccato, C.; Bonavita, M.; Borsa, F.; Ciceri, S.; Claudi, R. U.; Gandolfi, D.; ... (2015). The GAPS programme with HARPS-N at TNG VI. The curious case of TrES-4b. Astronomy and astrophysics, 575(L15), L15. EDP Sciences 10.1051/0004-6361/201425570 <http://dx.doi.org/10.1051/0004-6361/201425570>
Palavras-Chave #520 Astronomy #530 Physics
Tipo

info:eu-repo/semantics/article

info:eu-repo/semantics/publishedVersion

PeerReviewed
Acesso ao item digital