A search for transit timing variations in the HATS-18 planetary system

John Southworth; A. J. Barker; T. C. Hinse; Y. Jongen; M. Dominik; U. G. Jørgensen; P. Longa-Peña; S. Sajadian; C. Snodgrass; J. Tregloan-Reed; N. Bach-Møller; M. Bonavita; V. Bozza; M. J. Burgdorf; R. Figuera Jaimes; Ch Helling; J. A. Hitchcock; M. Hundertmark; E. Khalouei; H. Korhonen; L. Mancini; N. Peixinho; S. Rahvar; M. Rabus; J. Skottfelt; P. Spyratos

doi:10.1093/mnras/stac1931

A search for transit timing variations in the HATS-18 planetary system

John Southworth^*, A. J. Barker, T. C. Hinse, Y. Jongen, M. Dominik, U. G. Jørgensen, P. Longa-Peña, S. Sajadian, C. Snodgrass, J. Tregloan-Reed, N. Bach-Møller, M. Bonavita, V. Bozza, M. J. Burgdorf, R. Figuera Jaimes, Ch Helling, J. A. Hitchcock, M. Hundertmark, E. Khalouei, H. KorhonenL. Mancini, N. Peixinho, S. Rahvar, M. Rabus, J. Skottfelt, P. Spyratos

^*Korrespondierende/r Autor/-in für diese Arbeit

Institut für Theoretische Physik - Computational Physics (5150)

Publikation: Beitrag in einer Fachzeitschrift › Artikel › Begutachtung

Abstract

HATS-18b is a transiting planet with a large mass and a short orbital period, and is one of the best candidates for the detection of orbital decay induced by tidal effects. We present extensive photometry of HATS-18 from which we measure 27 times of mid-transit. Two further transit times were measured from data from the Transiting Exoplanet Survey Satellite (TESS) and three more taken from the literature. The transit timings were fitted with linear and quadratic ephemerides and an upper limit on orbital decay was determined. This corresponds to a lower limit on the modified stellar tidal quality factor of $Q_\star^{\,\prime} > 10^{5.11 \pm 0.04}$. This is at the cusp of constraining the presence of enhanced tidal dissipation due to internal gravity waves. We also refine the measured physical properties of the HATS-18 system, place upper limits on the masses of third bodies, and compare the relative performance of TESS and the 1.54-m Danish Telescope in measuring transit times for this system.

Originalsprache	englisch
Seiten (von - bis)	3212–3223
Seitenumfang	12
Fachzeitschrift	Monthly Notices of the Royal Astronomical Society
Jahrgang	515
Ausgabenummer	3
DOIs	https://doi.org/10.1093/mnras/stac1931
Publikationsstatus	Veröffentlicht - 1 Sept. 2022

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10.1093/mnras/stac1931

2207.05873v1Eingereichtes Manuskript, 2,55 MB

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Southworth, J., Barker, A. J., Hinse, T. C., Jongen, Y., Dominik, M., Jørgensen, U. G., Longa-Peña, P., Sajadian, S., Snodgrass, C., Tregloan-Reed, J., Bach-Møller, N., Bonavita, M., Bozza, V., Burgdorf, M. J., Jaimes, R. F., Helling, C., Hitchcock, J. A., Hundertmark, M., Khalouei, E., ... Spyratos, P. (2022). A search for transit timing variations in the HATS-18 planetary system. Monthly Notices of the Royal Astronomical Society, 515(3), 3212–3223. https://doi.org/10.1093/mnras/stac1931

Southworth, J, Barker, AJ, Hinse, TC, Jongen, Y, Dominik, M, Jørgensen, UG, Longa-Peña, P, Sajadian, S, Snodgrass, C, Tregloan-Reed, J, Bach-Møller, N, Bonavita, M, Bozza, V, Burgdorf, MJ, Jaimes, RF, Helling, C, Hitchcock, JA, Hundertmark, M, Khalouei, E, Korhonen, H, Mancini, L, Peixinho, N, Rahvar, S, Rabus, M, Skottfelt, J & Spyratos, P 2022, 'A search for transit timing variations in the HATS-18 planetary system', Monthly Notices of the Royal Astronomical Society, Jg. 515, Nr. 3, S. 3212–3223. https://doi.org/10.1093/mnras/stac1931

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title = "A search for transit timing variations in the HATS-18 planetary system",

abstract = "HATS-18 b is a transiting planet with a large mass and a short orbital period, and is one of the best candidates for the detection of orbital decay induced by tidal effects. We present extensive photometry of HATS-18 from which we measure 27 times of mid-transit. Two further transit times were measured from data from the Transiting Exoplanet Survey Satellite (TESS) and three more taken from the literature. The transit timings were fitted with linear and quadratic ephemerides and an upper limit on orbital decay was determined. This corresponds to a lower limit on the modified stellar tidal quality factor of $Q_\star ^{\, \prime } \gt 10^{5.11 \pm 0.04}$. This is at the cusp of constraining the presence of enhanced tidal dissipation due to internal gravity waves. We also refine the measured physical properties of the HATS-18 system, place upper limits on the masses of third bodies, and compare the relative performance of TESS and the 1.54 m Danish Telescope in measuring transit times for this system",

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author = "John Southworth and Barker, {A. J.} and Hinse, {T. C.} and Y. Jongen and M. Dominik and J{\o}rgensen, {U. G.} and P. Longa-Pe{\~n}a and S. Sajadian and C. Snodgrass and J. Tregloan-Reed and N. Bach-M{\o}ller and M. Bonavita and V. Bozza and Burgdorf, {M. J.} and Jaimes, {R. Figuera} and Ch Helling and Hitchcock, {J. A.} and M. Hundertmark and E. Khalouei and H. Korhonen and L. Mancini and N. Peixinho and S. Rahvar and M. Rabus and J. Skottfelt and P. Spyratos",

note = "Accepted for publication in MNRAS. 12 pages, 4 tables, 6 figures. This is the authors' version of the accepted paper",

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doi = "10.1093/mnras/stac1931",

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T1 - A search for transit timing variations in the HATS-18 planetary system

AU - Southworth, John

AU - Barker, A. J.

AU - Hinse, T. C.

AU - Jongen, Y.

AU - Dominik, M.

AU - Jørgensen, U. G.

AU - Longa-Peña, P.

AU - Sajadian, S.

AU - Snodgrass, C.

AU - Tregloan-Reed, J.

AU - Bach-Møller, N.

AU - Bonavita, M.

AU - Bozza, V.

AU - Burgdorf, M. J.

AU - Jaimes, R. Figuera

AU - Helling, Ch

AU - Hitchcock, J. A.

AU - Hundertmark, M.

AU - Khalouei, E.

AU - Korhonen, H.

AU - Mancini, L.

AU - Peixinho, N.

AU - Rahvar, S.

AU - Rabus, M.

AU - Skottfelt, J.

AU - Spyratos, P.

N1 - Accepted for publication in MNRAS. 12 pages, 4 tables, 6 figures. This is the authors' version of the accepted paper

PY - 2022/9/1

Y1 - 2022/9/1

N2 - HATS-18 b is a transiting planet with a large mass and a short orbital period, and is one of the best candidates for the detection of orbital decay induced by tidal effects. We present extensive photometry of HATS-18 from which we measure 27 times of mid-transit. Two further transit times were measured from data from the Transiting Exoplanet Survey Satellite (TESS) and three more taken from the literature. The transit timings were fitted with linear and quadratic ephemerides and an upper limit on orbital decay was determined. This corresponds to a lower limit on the modified stellar tidal quality factor of $Q_\star ^{\, \prime } \gt 10^{5.11 \pm 0.04}$. This is at the cusp of constraining the presence of enhanced tidal dissipation due to internal gravity waves. We also refine the measured physical properties of the HATS-18 system, place upper limits on the masses of third bodies, and compare the relative performance of TESS and the 1.54 m Danish Telescope in measuring transit times for this system

AB - HATS-18 b is a transiting planet with a large mass and a short orbital period, and is one of the best candidates for the detection of orbital decay induced by tidal effects. We present extensive photometry of HATS-18 from which we measure 27 times of mid-transit. Two further transit times were measured from data from the Transiting Exoplanet Survey Satellite (TESS) and three more taken from the literature. The transit timings were fitted with linear and quadratic ephemerides and an upper limit on orbital decay was determined. This corresponds to a lower limit on the modified stellar tidal quality factor of $Q_\star ^{\, \prime } \gt 10^{5.11 \pm 0.04}$. This is at the cusp of constraining the presence of enhanced tidal dissipation due to internal gravity waves. We also refine the measured physical properties of the HATS-18 system, place upper limits on the masses of third bodies, and compare the relative performance of TESS and the 1.54 m Danish Telescope in measuring transit times for this system

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KW - astro-ph.SR

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U2 - 10.1093/mnras/stac1931

DO - 10.1093/mnras/stac1931

M3 - Article

SN - 0035-8711

VL - 515

SP - 3212

EP - 3223

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 3

ER -

A search for transit timing variations in the HATS-18 planetary system

Abstract

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