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Anders Zinck Justesen

HD 89345: a bright oscillating star hosting a transiting warm Saturn-sized planet observed by K2

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HD 89345 : a bright oscillating star hosting a transiting warm Saturn-sized planet observed by K2. / Van Eylen, V.; Dai, F.; Mathur, S.; Gandolfi, D.; Albrecht, S.; Fridlund, M.; Garcia, R. A.; Guenther, E.; Hjorth, M.; Justesen, A. B.; Livingston, J.; Lund, M. N.; Prerez Hernandez, F. P.; Prieto-Arranz, J.; Regulo, C.; Bugnet, L.; Everett, M. E.; Hirano, T.; Nespral, D.; Nowak, G.; Palle, E.; Aguirre, V. Silva; Trifonov, T.; Winn, J. N.; Barragan, O.; Beck, P. G.; Chaplin, W. J.; Cochran, W. D.; Csizmadia, S.; Deeg, H.; Endl, M.; Heeren, P.; Grziwa, S.; Hatzes, A. P.; Hidalgo, D.; Korth, J.; Mathis, S.; Montanes Rodriguez, P.; Narita, N.; Patzold, M.; Persson, C. M.; Rodler, F.; Smith, A. M. S.

I: Monthly Notices of the Royal Astronomical Society, Bind 478, Nr. 4, 08.2018, s. 4866-4880.

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

Harvard

Van Eylen, V, Dai, F, Mathur, S, Gandolfi, D, Albrecht, S, Fridlund, M, Garcia, RA, Guenther, E, Hjorth, M, Justesen, AB, Livingston, J, Lund, MN, Prerez Hernandez, FP, Prieto-Arranz, J, Regulo, C, Bugnet, L, Everett, ME, Hirano, T, Nespral, D, Nowak, G, Palle, E, Aguirre, VS, Trifonov, T, Winn, JN, Barragan, O, Beck, PG, Chaplin, WJ, Cochran, WD, Csizmadia, S, Deeg, H, Endl, M, Heeren, P, Grziwa, S, Hatzes, AP, Hidalgo, D, Korth, J, Mathis, S, Montanes Rodriguez, P, Narita, N, Patzold, M, Persson, CM, Rodler, F & Smith, AMS 2018, 'HD 89345: a bright oscillating star hosting a transiting warm Saturn-sized planet observed by K2', Monthly Notices of the Royal Astronomical Society, bind 478, nr. 4, s. 4866-4880. https://doi.org/10.1093/mnras/sty1390

APA

Van Eylen, V., Dai, F., Mathur, S., Gandolfi, D., Albrecht, S., Fridlund, M., Garcia, R. A., Guenther, E., Hjorth, M., Justesen, A. B., Livingston, J., Lund, M. N., Prerez Hernandez, F. P., Prieto-Arranz, J., Regulo, C., Bugnet, L., Everett, M. E., Hirano, T., Nespral, D., ... Smith, A. M. S. (2018). HD 89345: a bright oscillating star hosting a transiting warm Saturn-sized planet observed by K2. Monthly Notices of the Royal Astronomical Society, 478(4), 4866-4880. https://doi.org/10.1093/mnras/sty1390

CBE

Van Eylen V, Dai F, Mathur S, Gandolfi D, Albrecht S, Fridlund M, Garcia RA, Guenther E, Hjorth M, Justesen AB, Livingston J, Lund MN, Prerez Hernandez FP, Prieto-Arranz J, Regulo C, Bugnet L, Everett ME, Hirano T, Nespral D, Nowak G, Palle E, Aguirre VS, Trifonov T, Winn JN, Barragan O, Beck PG, Chaplin WJ, Cochran WD, Csizmadia S, Deeg H, Endl M, Heeren P, Grziwa S, Hatzes AP, Hidalgo D, Korth J, Mathis S, Montanes Rodriguez P, Narita N, Patzold M, Persson CM, Rodler F, Smith AMS. 2018. HD 89345: a bright oscillating star hosting a transiting warm Saturn-sized planet observed by K2. Monthly Notices of the Royal Astronomical Society. 478(4):4866-4880. https://doi.org/10.1093/mnras/sty1390

MLA

Van Eylen, V. o.a.. "HD 89345: a bright oscillating star hosting a transiting warm Saturn-sized planet observed by K2". Monthly Notices of the Royal Astronomical Society. 2018, 478(4). 4866-4880. https://doi.org/10.1093/mnras/sty1390

Vancouver

Van Eylen V, Dai F, Mathur S, Gandolfi D, Albrecht S, Fridlund M o.a. HD 89345: a bright oscillating star hosting a transiting warm Saturn-sized planet observed by K2. Monthly Notices of the Royal Astronomical Society. 2018 aug;478(4):4866-4880. https://doi.org/10.1093/mnras/sty1390

Author

Van Eylen, V. ; Dai, F. ; Mathur, S. ; Gandolfi, D. ; Albrecht, S. ; Fridlund, M. ; Garcia, R. A. ; Guenther, E. ; Hjorth, M. ; Justesen, A. B. ; Livingston, J. ; Lund, M. N. ; Prerez Hernandez, F. P. ; Prieto-Arranz, J. ; Regulo, C. ; Bugnet, L. ; Everett, M. E. ; Hirano, T. ; Nespral, D. ; Nowak, G. ; Palle, E. ; Aguirre, V. Silva ; Trifonov, T. ; Winn, J. N. ; Barragan, O. ; Beck, P. G. ; Chaplin, W. J. ; Cochran, W. D. ; Csizmadia, S. ; Deeg, H. ; Endl, M. ; Heeren, P. ; Grziwa, S. ; Hatzes, A. P. ; Hidalgo, D. ; Korth, J. ; Mathis, S. ; Montanes Rodriguez, P. ; Narita, N. ; Patzold, M. ; Persson, C. M. ; Rodler, F. ; Smith, A. M. S. / HD 89345 : a bright oscillating star hosting a transiting warm Saturn-sized planet observed by K2. I: Monthly Notices of the Royal Astronomical Society. 2018 ; Bind 478, Nr. 4. s. 4866-4880.

Bibtex

@article{68393662e6344347b9b1978a642c149c,
title = "HD 89345: a bright oscillating star hosting a transiting warm Saturn-sized planet observed by K2",
abstract = "We report the discovery and characterization of HD 89345b (K2-234b; EPIC 248777106b), a Saturn-sized planet orbiting a slightly evolved star. HD 89345 is a bright star (V = 9.3 mag) observed by the K2 mission with 1 min time sampling. It exhibits solar-like oscillations. We conducted asteroseismology to determine the parameters of the star, finding themass and radius to be 1.12(-0.01)(+0.04) and 1.657(-0.004)(+0.020)R(circle dot), respectively. The star appears to have recently left the main sequence, based on the inferred age, 9.4(-1.3)(+0.4)Gyr, and the non-detection of mixed modes. The star hosts a 'warm Saturn' (P = 11.8 d, R-p = 6.86 +/- 0.14 R-circle plus). Radial-velocity follow-up observations performed with the FIbre-fed Echelle Spectrograph, HARPS, and HARPS-N spectrographs show that the planet has a mass of 35.7 +/- 3.3 M-circle plus. The data also show that the planet's orbit is eccentric (e approximate to 0.2). An investigation of the rotational splitting of the oscillation frequencies of the star yields no conclusive evidence on the stellar inclination angle. We further obtained Rossiter-McLaughlin observations, which result in a broad posterior of the stellar obliquity. The planet seems to confirm to the same patterns that have been observed for other sub-Saturns regarding planet mass and multiplicity, orbital eccentricity, and stellar metallicity.",
keywords = "asteroseismology, planets and satellites: composition, planets and satellites: formation, planets and satellites: fundamental parameters, COOL DWARF STARS, SUN-LIKE STAR, TIDAL DISSIPATION, GIANT PLANETS, BALMER LINES, LIGHT CURVES, P-MODES, KEPLER, ROTATION, ASTEROSEISMOLOGY",
author = "{Van Eylen}, V. and F. Dai and S. Mathur and D. Gandolfi and S. Albrecht and M. Fridlund and Garcia, {R. A.} and E. Guenther and M. Hjorth and Justesen, {A. B.} and J. Livingston and Lund, {M. N.} and {Prerez Hernandez}, {F. P.} and J. Prieto-Arranz and C. Regulo and L. Bugnet and Everett, {M. E.} and T. Hirano and D. Nespral and G. Nowak and E. Palle and Aguirre, {V. Silva} and T. Trifonov and Winn, {J. N.} and O. Barragan and Beck, {P. G.} and Chaplin, {W. J.} and Cochran, {W. D.} and S. Csizmadia and H. Deeg and M. Endl and P. Heeren and S. Grziwa and Hatzes, {A. P.} and D. Hidalgo and J. Korth and S. Mathis and {Montanes Rodriguez}, P. and N. Narita and M. Patzold and Persson, {C. M.} and F. Rodler and Smith, {A. M. S.}",
year = "2018",
month = aug,
doi = "10.1093/mnras/sty1390",
language = "English",
volume = "478",
pages = "4866--4880",
journal = "Royal Astronomical Society. Monthly Notices",
issn = "0035-8711",
publisher = "Oxford University Press",
number = "4",

}

RIS

TY - JOUR

T1 - HD 89345

T2 - a bright oscillating star hosting a transiting warm Saturn-sized planet observed by K2

AU - Van Eylen, V.

AU - Dai, F.

AU - Mathur, S.

AU - Gandolfi, D.

AU - Albrecht, S.

AU - Fridlund, M.

AU - Garcia, R. A.

AU - Guenther, E.

AU - Hjorth, M.

AU - Justesen, A. B.

AU - Livingston, J.

AU - Lund, M. N.

AU - Prerez Hernandez, F. P.

AU - Prieto-Arranz, J.

AU - Regulo, C.

AU - Bugnet, L.

AU - Everett, M. E.

AU - Hirano, T.

AU - Nespral, D.

AU - Nowak, G.

AU - Palle, E.

AU - Aguirre, V. Silva

AU - Trifonov, T.

AU - Winn, J. N.

AU - Barragan, O.

AU - Beck, P. G.

AU - Chaplin, W. J.

AU - Cochran, W. D.

AU - Csizmadia, S.

AU - Deeg, H.

AU - Endl, M.

AU - Heeren, P.

AU - Grziwa, S.

AU - Hatzes, A. P.

AU - Hidalgo, D.

AU - Korth, J.

AU - Mathis, S.

AU - Montanes Rodriguez, P.

AU - Narita, N.

AU - Patzold, M.

AU - Persson, C. M.

AU - Rodler, F.

AU - Smith, A. M. S.

PY - 2018/8

Y1 - 2018/8

N2 - We report the discovery and characterization of HD 89345b (K2-234b; EPIC 248777106b), a Saturn-sized planet orbiting a slightly evolved star. HD 89345 is a bright star (V = 9.3 mag) observed by the K2 mission with 1 min time sampling. It exhibits solar-like oscillations. We conducted asteroseismology to determine the parameters of the star, finding themass and radius to be 1.12(-0.01)(+0.04) and 1.657(-0.004)(+0.020)R(circle dot), respectively. The star appears to have recently left the main sequence, based on the inferred age, 9.4(-1.3)(+0.4)Gyr, and the non-detection of mixed modes. The star hosts a 'warm Saturn' (P = 11.8 d, R-p = 6.86 +/- 0.14 R-circle plus). Radial-velocity follow-up observations performed with the FIbre-fed Echelle Spectrograph, HARPS, and HARPS-N spectrographs show that the planet has a mass of 35.7 +/- 3.3 M-circle plus. The data also show that the planet's orbit is eccentric (e approximate to 0.2). An investigation of the rotational splitting of the oscillation frequencies of the star yields no conclusive evidence on the stellar inclination angle. We further obtained Rossiter-McLaughlin observations, which result in a broad posterior of the stellar obliquity. The planet seems to confirm to the same patterns that have been observed for other sub-Saturns regarding planet mass and multiplicity, orbital eccentricity, and stellar metallicity.

AB - We report the discovery and characterization of HD 89345b (K2-234b; EPIC 248777106b), a Saturn-sized planet orbiting a slightly evolved star. HD 89345 is a bright star (V = 9.3 mag) observed by the K2 mission with 1 min time sampling. It exhibits solar-like oscillations. We conducted asteroseismology to determine the parameters of the star, finding themass and radius to be 1.12(-0.01)(+0.04) and 1.657(-0.004)(+0.020)R(circle dot), respectively. The star appears to have recently left the main sequence, based on the inferred age, 9.4(-1.3)(+0.4)Gyr, and the non-detection of mixed modes. The star hosts a 'warm Saturn' (P = 11.8 d, R-p = 6.86 +/- 0.14 R-circle plus). Radial-velocity follow-up observations performed with the FIbre-fed Echelle Spectrograph, HARPS, and HARPS-N spectrographs show that the planet has a mass of 35.7 +/- 3.3 M-circle plus. The data also show that the planet's orbit is eccentric (e approximate to 0.2). An investigation of the rotational splitting of the oscillation frequencies of the star yields no conclusive evidence on the stellar inclination angle. We further obtained Rossiter-McLaughlin observations, which result in a broad posterior of the stellar obliquity. The planet seems to confirm to the same patterns that have been observed for other sub-Saturns regarding planet mass and multiplicity, orbital eccentricity, and stellar metallicity.

KW - asteroseismology

KW - planets and satellites: composition

KW - planets and satellites: formation

KW - planets and satellites: fundamental parameters

KW - COOL DWARF STARS

KW - SUN-LIKE STAR

KW - TIDAL DISSIPATION

KW - GIANT PLANETS

KW - BALMER LINES

KW - LIGHT CURVES

KW - P-MODES

KW - KEPLER

KW - ROTATION

KW - ASTEROSEISMOLOGY

U2 - 10.1093/mnras/sty1390

DO - 10.1093/mnras/sty1390

M3 - Journal article

VL - 478

SP - 4866

EP - 4880

JO - Royal Astronomical Society. Monthly Notices

JF - Royal Astronomical Society. Monthly Notices

SN - 0035-8711

IS - 4

ER -