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

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

doi:10.1051/0004-6361/201425570

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

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

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

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 ± s^-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^+0.08_-0.09 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.

Original language	English (US)
Article number	L15
Journal	Astronomy and Astrophysics
Volume	575
DOIs	https://doi.org/10.1051/0004-6361/201425570
State	Published - Mar 2015
Externally published	Yes

Keywords

Planetary systems
Stars: individual: TrES-4b
Techniques: photometric
Techniques: radial velocities
Techniques: spectroscopic

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1051/0004-6361/201425570

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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., ... Southworth, J. (2015). The GAPS programme with HARPS-N at TNG: VI. The curious case of TrES-4b. Astronomy and Astrophysics, 575, Article L15. https://doi.org/10.1051/0004-6361/201425570

Sozzetti, A, Bonomo, AS, Biazzo, K, Mancini, L, Damasso, M, Desidera, S, Gratton, R, Lanza, AF, Poretti, E, Rainer, M, Malavolta, L, Affer, L, Barbieri, M, Bedin, LR, Boccato, C, Bonavita, M, Borsa, F, Ciceri, S, Claudi, RU, Gandolfi, D, Giacobbe, P, Henning, T, Knapic, C, Latham, DW, Lodato, G, Maggio, A, Maldonado, J, Marzari, F, Martinez Fiorenzano, AF, Micela, G, Molinari, E, Mordasini, C, Nascimbeni, V, Pagano, I, Pedani, M, Pepe, F, Piotto, G, Santos, N, Scandariato, G, Shkolnik, E & Southworth, J 2015, 'The GAPS programme with HARPS-N at TNG: VI. The curious case of TrES-4b', Astronomy and Astrophysics, vol. 575, L15. https://doi.org/10.1051/0004-6361/201425570

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title = "The GAPS programme with HARPS-N at TNG: VI. The curious case of TrES-4b",

abstract = "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 ± s-1. The derived mass of TrES-4b is found to be Mp = 0.49 ± 0.04 MJup, significantly lower than previously reported. Combined with the large radius (Rp = 1.84+0.08-0.09 RJup) 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.",

keywords = "Planetary systems, Stars: individual: TrES-4b, Techniques: photometric, Techniques: radial velocities, Techniques: spectroscopic",

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

note = "Publisher Copyright: {\textcopyright} 2015 ESO.",

year = "2015",

month = mar,

doi = "10.1051/0004-6361/201425570",

language = "English (US)",

volume = "575",

journal = "Astronomy and Astrophysics",

issn = "0004-6361",

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TY - JOUR

T1 - The GAPS programme with HARPS-N at TNG

T2 - VI. The curious case of TrES-4b

AU - Sozzetti, A.

AU - Bonomo, A. S.

AU - Biazzo, K.

AU - Mancini, L.

AU - Damasso, M.

AU - Desidera, S.

AU - Gratton, R.

AU - Lanza, A. F.

AU - Poretti, E.

AU - Rainer, M.

AU - Malavolta, L.

AU - Affer, L.

AU - Barbieri, M.

AU - Bedin, L. R.

AU - Boccato, C.

AU - Bonavita, M.

AU - Borsa, F.

AU - Ciceri, S.

AU - Claudi, R. U.

AU - Gandolfi, D.

AU - Giacobbe, P.

AU - Henning, T.

AU - Knapic, C.

AU - Latham, D. W.

AU - Lodato, G.

AU - Maggio, A.

AU - Maldonado, J.

AU - Marzari, F.

AU - Martinez Fiorenzano, A. F.

AU - Micela, G.

AU - Molinari, E.

AU - Mordasini, C.

AU - Nascimbeni, V.

AU - Pagano, I.

AU - Pedani, M.

AU - Pepe, F.

AU - Piotto, G.

AU - Santos, N.

AU - Scandariato, G.

AU - Shkolnik, E.

AU - Southworth, J.

PY - 2015/3

Y1 - 2015/3

N2 - 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 ± s-1. The derived mass of TrES-4b is found to be Mp = 0.49 ± 0.04 MJup, significantly lower than previously reported. Combined with the large radius (Rp = 1.84+0.08-0.09 RJup) 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.

AB - 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 ± s-1. The derived mass of TrES-4b is found to be Mp = 0.49 ± 0.04 MJup, significantly lower than previously reported. Combined with the large radius (Rp = 1.84+0.08-0.09 RJup) 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.

KW - Planetary systems

KW - Stars: individual: TrES-4b

KW - Techniques: photometric

KW - Techniques: radial velocities

KW - Techniques: spectroscopic

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U2 - 10.1051/0004-6361/201425570

DO - 10.1051/0004-6361/201425570

M3 - Article

AN - SCOPUS:84924354321

SN - 0004-6361

VL - 575

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

M1 - L15

ER -

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

Abstract

Keywords

ASJC Scopus subject areas

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