HD 219666 b : a hot-Neptune from TESS Sector 1

Esposito, M.; Armstrong, D. J.; Gandolfi, D.; Adibekyan, V.; Fridlund, M.; Santos, N. C.; Livingston, J. H.; Delgado Mena, E.; Fossati, L.; Lillo-Box, J.; Barragán, O.; Barrado, D.; Cubillos, P. E.; Cooke, B.; Justesen, A. B.; Meru, F.; Díaz, R. F.; Dai, F.; Nielsen, L. D.; Persson, C. M.; Wheatley, P. J.; Hatzes, A. P.; Van Eylen, V.; Musso, M. M.; Alonso, R.; Beck, P. G.; Barros, S. C.C.; Bayliss, D.; Bonomo, A. S.; Bouchy, F.; Brown, D. J.A.; Bryant, E.; Cabrera, J.; Cochran, W. D.; Csizmadia, S.; Deeg, H.; Demangeon, O.; Deleuil, M.; Dumusque, X.; Eigmüller, P.; Endl, M.; Erikson, A.; Faedi, F.; Figueira, P.; Fukui, A.; Grziwa, S.; Guenther, E. W.; Hidalgo, D.; Hjorth, M.; Hirano, T.

HD 219666 b : a hot-Neptune from TESS Sector 1

Mark

Esposito, M. ; Armstrong, D. J. ; Gandolfi, D. ; Adibekyan, V. ; Fridlund, M. ; Santos, N. C. ; Livingston, J. H. ; Delgado Mena, E. ; Fossati, L. and Lillo-Box, J. , et al. (2019) In Astronomy and Astrophysics 623.

Abstract: We report on the confirmation and mass determination of a transiting planet orbiting the old and inactive G7 dwarf star HD 219666 (M_∗ = 0.92 ± 0.03 M_⊙, R_∗ = 1.03 ± 0.03 R_⊙, τ_∗ = 10 ± 2 Gyr). With a mass of M_b = 16.6 ± 1.3 M_⊙, a radius of R_b = 4.71 ± 0.17 R_⊙, and an orbital period of P_orb ≃ 6 days, HD 219666 b is a new member of a rare class of exoplanets: the hot-Neptunes. The Transiting Exoplanet Survey Satellite (TESS) observed HD 219666 (also known as TOI-118) in its Sector 1 and the light curve shows four transit-like events, equally spaced in time. We confirmed the planetary nature of the candidate by gathering precise... (More); We report on the confirmation and mass determination of a transiting planet orbiting the old and inactive G7 dwarf star HD 219666 (M_∗ = 0.92 ± 0.03 M_⊙, R_∗ = 1.03 ± 0.03 R_⊙, τ_∗ = 10 ± 2 Gyr). With a mass of M_b = 16.6 ± 1.3 M_⊙, a radius of R_b = 4.71 ± 0.17 R_⊙, and an orbital period of P_orb ≃ 6 days, HD 219666 b is a new member of a rare class of exoplanets: the hot-Neptunes. The Transiting Exoplanet Survey Satellite (TESS) observed HD 219666 (also known as TOI-118) in its Sector 1 and the light curve shows four transit-like events, equally spaced in time. We confirmed the planetary nature of the candidate by gathering precise radial-velocity measurements with the High Accuracy Radial velocity Planet Searcher (HARPS) at ESO 3.6 m. We used the co-added HARPS spectrum to derive the host star fundamental parameters (T_eff = 5527 ± 65 K, log g_∗ = 4.40 ± 0.11 (cgs), [Fe/H]= 0.04 ± 0.04 dex, log R^′_HK = -5.07 ± 0.03), as well as the abundances of many volatile and refractory elements. The host star brightness (V = 9.9) makes it suitable for further characterisation by means of in-transit spectroscopy. The determination of the planet orbital obliquity, along with the atmosphericmetal-to-hydrogen content and thermal structure could provide us with important clues on the formation mechanisms of this class of objects.
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Please use this url to cite or link to this publication: https://lup.lub.lu.se/record/53294d7d-a25c-4a67-a188-d5245ada5e97

author

Esposito, M. ; Armstrong, D. J. ; Gandolfi, D. ; Adibekyan, V. ; Fridlund, M. ; Santos, N. C. ; Livingston, J. H. ; Delgado Mena, E. ; Fossati, L. and Lillo-Box, J. , et al. (More)

Esposito, M. ; Armstrong, D. J. ; Gandolfi, D. ; Adibekyan, V. ; Fridlund, M. ; Santos, N. C. ; Livingston, J. H. ; Delgado Mena, E. ; Fossati, L. ; Lillo-Box, J. ; Barragán, O. ; Barrado, D. ; Cubillos, P. E. ; Cooke, B. ; Justesen, A. B. ; Meru, F. ; Díaz, R. F. ; Dai, F. ; Nielsen, L. D. ; Persson, C. M. ; Wheatley, P. J. ; Hatzes, A. P. ; Van Eylen, V. ; Musso, M. M. ; Alonso, R. ; Beck, P. G. ; Barros, S. C.C. ; Bayliss, D. ; Bonomo, A. S. ; Bouchy, F. ; Brown, D. J.A. ; Bryant, E. ; Cabrera, J. ; Cochran, W. D. ; Csizmadia, S. ; Deeg, H. ; Demangeon, O. ; Deleuil, M. ; Dumusque, X. ; Eigmüller, P. ; Endl, M. ; Erikson, A. ; Faedi, F. ; Figueira, P. ; Fukui, A. ; Grziwa, S. ; Guenther, E. W. ; Hidalgo, D. ; Hjorth, M. ; Hirano, T. ; Hojjatpanah, S. ; Knudstrup, E. ; Korth, J. ^LU ; Lam, K. W.F. ; De Leon, J. ; Lund, M. N. ; Luque, R. ; Mathur, S. ; Montañés Rodríguez, P. ; Narita, N. ; Nespral, D. ; Niraula, P. ; Nowak, G. ; Osborn, H. P. ; Pallé, E. ; Pätzold, M. ; Pollacco, D. ; Prieto-Arranz, J. ; Rauer, H. ; Redfield, S. ; Ribas, I. ; Sousa, S. G. ; Smith, A. M.S. ; Tala-Pinto, M. ; Udry, S. and Winn, J. N. (Less)

publishing date

2019-03-01

type

Contribution to journal

publication status

published

keywords

Planets and satellites: detection, Planets and satellites: fundamental parameters, Planets and satellites: individual: HD 219666 b, Stars: fundamental parameters, Techniques: photometric, Techniques: radial velocities

in

Astronomy and Astrophysics

volume

623

article number

A165

publisher

EDP Sciences

external identifiers

scopus:85063896936

ISSN

0004-6361

DOI

10.1051/0004-6361/201834853

language

English

LU publication?

no

additional info

id

53294d7d-a25c-4a67-a188-d5245ada5e97

date added to LUP

2023-02-02 10:32:52

date last changed

2023-02-27 13:00:36

@article{53294d7d-a25c-4a67-a188-d5245ada5e97,
  abstract     = {{<p>We report on the confirmation and mass determination of a transiting planet orbiting the old and inactive G7 dwarf star HD 219666 (M<sub>∗</sub> = 0.92 ± 0.03 M<sub>⊙</sub>, R<sub>∗</sub> = 1.03 ± 0.03 R<sub>⊙</sub>, τ<sub>∗</sub> = 10 ± 2 Gyr). With a mass of M<sub>b</sub> = 16.6 ± 1.3 M<sub>⊙</sub>, a radius of R<sub>b</sub> = 4.71 ± 0.17 R<sub>⊙</sub>, and an orbital period of P<sub>orb</sub> ≃ 6 days, HD 219666 b is a new member of a rare class of exoplanets: the hot-Neptunes. The Transiting Exoplanet Survey Satellite (TESS) observed HD 219666 (also known as TOI-118) in its Sector 1 and the light curve shows four transit-like events, equally spaced in time. We confirmed the planetary nature of the candidate by gathering precise radial-velocity measurements with the High Accuracy Radial velocity Planet Searcher (HARPS) at ESO 3.6 m. We used the co-added HARPS spectrum to derive the host star fundamental parameters (T<sub>eff</sub> = 5527 ± 65 K, log g<sub>∗</sub> = 4.40 ± 0.11 (cgs), [Fe/H]= 0.04 ± 0.04 dex, log R<sup>′</sup><sub>HK</sub> = -5.07 ± 0.03), as well as the abundances of many volatile and refractory elements. The host star brightness (V = 9.9) makes it suitable for further characterisation by means of in-transit spectroscopy. The determination of the planet orbital obliquity, along with the atmosphericmetal-to-hydrogen content and thermal structure could provide us with important clues on the formation mechanisms of this class of objects.</p>}},
  author       = {{Esposito, M. and Armstrong, D. J. and Gandolfi, D. and Adibekyan, V. and Fridlund, M. and Santos, N. C. and Livingston, J. H. and Delgado Mena, E. and Fossati, L. and Lillo-Box, J. and Barragán, O. and Barrado, D. and Cubillos, P. E. and Cooke, B. and Justesen, A. B. and Meru, F. and Díaz, R. F. and Dai, F. and Nielsen, L. D. and Persson, C. M. and Wheatley, P. J. and Hatzes, A. P. and Van Eylen, V. and Musso, M. M. and Alonso, R. and Beck, P. G. and Barros, S. C.C. and Bayliss, D. and Bonomo, A. S. and Bouchy, F. and Brown, D. J.A. and Bryant, E. and Cabrera, J. and Cochran, W. D. and Csizmadia, S. and Deeg, H. and Demangeon, O. and Deleuil, M. and Dumusque, X. and Eigmüller, P. and Endl, M. and Erikson, A. and Faedi, F. and Figueira, P. and Fukui, A. and Grziwa, S. and Guenther, E. W. and Hidalgo, D. and Hjorth, M. and Hirano, T. and Hojjatpanah, S. and Knudstrup, E. and Korth, J. and Lam, K. W.F. and De Leon, J. and Lund, M. N. and Luque, R. and Mathur, S. and Montañés Rodríguez, P. and Narita, N. and Nespral, D. and Niraula, P. and Nowak, G. and Osborn, H. P. and Pallé, E. and Pätzold, M. and Pollacco, D. and Prieto-Arranz, J. and Rauer, H. and Redfield, S. and Ribas, I. and Sousa, S. G. and Smith, A. M.S. and Tala-Pinto, M. and Udry, S. and Winn, J. N.}},
  issn         = {{0004-6361}},
  keywords     = {{Planets and satellites: detection; Planets and satellites: fundamental parameters; Planets and satellites: individual: HD 219666 b; Stars: fundamental parameters; Techniques: photometric; Techniques: radial velocities}},
  language     = {{eng}},
  month        = {{03}},
  publisher    = {{EDP Sciences}},
  series       = {{Astronomy and Astrophysics}},
  title        = {{HD 219666 b : a hot-Neptune from TESS Sector 1}},
  url          = {{http://dx.doi.org/10.1051/0004-6361/201834853}},
  doi          = {{10.1051/0004-6361/201834853}},
  volume       = {{623}},
  year         = {{2019}},
}

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HD 219666 b : a hot-Neptune from TESS Sector 1