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, Evgenya Shkolnik, J. Southworth

Research output: Contribution to journalArticle

10 Citations (Scopus)

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.

Original languageEnglish (US)
Article numberL15
JournalAstronomy and Astrophysics
Volume575
DOIs
StatePublished - 2015
Externally publishedYes

Fingerprint

spectroscopic analysis
Jupiter (planet)
velocity measurement
Jupiter
radial velocity
light curve
planets
planet
orbits
radii
analysis
programme
parameter

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

Cite this

Sozzetti, A., Bonomo, A. S., Biazzo, K., Mancini, L., Damasso, M., Desidera, S., ... Southworth, J. (2015). The GAPS programme with HARPS-N at TNG: VI. The curious case of TrES-4b. Astronomy and Astrophysics, 575, [L15]. https://doi.org/10.1051/0004-6361/201425570

The GAPS programme with HARPS-N at TNG : VI. The curious case of TrES-4b. / 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, C.; Nascimbeni, V.; Pagano, I.; Pedani, M.; Pepe, F.; Piotto, G.; Santos, N.; Scandariato, G.; Shkolnik, Evgenya; Southworth, J.

In: Astronomy and Astrophysics, Vol. 575, L15, 2015.

Research output: Contribution to journalArticle

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
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, C. ; Nascimbeni, V. ; Pagano, I. ; Pedani, M. ; Pepe, F. ; Piotto, G. ; Santos, N. ; Scandariato, G. ; Shkolnik, Evgenya ; Southworth, J. / The GAPS programme with HARPS-N at TNG : VI. The curious case of TrES-4b. In: Astronomy and Astrophysics. 2015 ; Vol. 575.
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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.",
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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, Evgenya

AU - Southworth, J.

PY - 2015

Y1 - 2015

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

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VL - 575

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

SN - 0004-6361

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