Transit timing variations in the WASP-4 planetary system

John Southworth; M. Dominik; U. G. Jørgensen; M. I. Andersen; V. Bozza; M. J. Burgdorf; G. D'Ago; S. Dib; R. Figuera Jaimes; Y. I. Fujii; S. Gill; L. K. Haikala; T. C. Hinse; M. Hundertmark; E. Khalouei; H. Korhonen; P. Longa-Peña; L. Mancini; N. Peixinho; M. Rabus; S. Rahvar; S. Sajadian; J. Skottfelt; C. Snodgrass; P. Spyratos; J. Tregloan-Reed; E. Unda-Sanzana; C. von Essen

doi:10.1093/mnras/stz2602

Transit timing variations in the WASP-4 planetary system

John Southworth, M. Dominik, U. G. Jørgensen, M. I. Andersen, V. Bozza, M. J. Burgdorf, G. D'Ago, S. Dib, R. Figuera Jaimes, Y. I. Fujii, S. Gill, L. K. Haikala, T. C. Hinse, M. Hundertmark, E. Khalouei, H. Korhonen, P. Longa-Peña, L. Mancini, N. Peixinho, M. RabusS. Rahvar, S. Sajadian, J. Skottfelt, C. Snodgrass, P. Spyratos, J. Tregloan-Reed, E. Unda-Sanzana, C. von Essen

Producción científica: Contribución a una revista › Artículo › revisión exhaustiva

32 Citas (Scopus)

Resumen

Transits in the planetary system WASP-4 were recently found to occur 80 s earlier than expected in observations from the TESS satellite. We present 22 new times of mid-transit that confirm the existence of transit timing variations, and are well fitted by a quadratic ephemeris with period decay dP/dt = −9.2 ± 1.1 ms yr⁻¹. We rule out instrumental issues, stellar activity, and the Applegate mechanism as possible causes. The light-time effect is also not favoured due to the non-detection of changes in the systemic velocity. Orbital decay and apsidal precession are plausible but unproven. WASP-4 b is only the third hot Jupiter known to show transit timing variations to high confidence. We discuss a variety of observations of this and other planetary systems that would be useful in improving our understanding of WASP-4 in particular and orbital decay in general.

Idioma original	Inglés
Páginas (desde-hasta)	4230-4236
Número de páginas	7
Publicación	Monthly Notices of the Royal Astronomical Society
Volumen	490
N.º	3
DOI	https://doi.org/10.1093/mnras/stz2602
Estado	Publicada - 2019

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© 2019 The Author(s)

Áreas temáticas de ASJC Scopus

Astronomía y astrofísica
Ciencias planetarias y espacial

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Southworth, J., Dominik, M., Jørgensen, U. G., Andersen, M. I., Bozza, V., Burgdorf, M. J., D'Ago, G., Dib, S., Figuera Jaimes, R., Fujii, Y. I., Gill, S., Haikala, L. K., Hinse, T. C., Hundertmark, M., Khalouei, E., Korhonen, H., Longa-Peña, P., Mancini, L., Peixinho, N., ... von Essen, C. (2019). Transit timing variations in the WASP-4 planetary system. Monthly Notices of the Royal Astronomical Society, 490(3), 4230-4236. https://doi.org/10.1093/mnras/stz2602

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title = "Transit timing variations in the WASP-4 planetary system",

abstract = "Transits in the planetary system WASP-4 were recently found to occur 80 s earlier than expected in observations from the TESS satellite. We present 22 new times of mid-transit that confirm the existence of transit timing variations, and are well fitted by a quadratic ephemeris with period decay dP/dt = −9.2 ± 1.1 ms yr−1. We rule out instrumental issues, stellar activity, and the Applegate mechanism as possible causes. The light-time effect is also not favoured due to the non-detection of changes in the systemic velocity. Orbital decay and apsidal precession are plausible but unproven. WASP-4 b is only the third hot Jupiter known to show transit timing variations to high confidence. We discuss a variety of observations of this and other planetary systems that would be useful in improving our understanding of WASP-4 in particular and orbital decay in general.",

keywords = "Stars: activity, Stars: fundamental parameters, Stars: individual: WASP-4",

author = "John Southworth and M. Dominik and J{\o}rgensen, {U. G.} and Andersen, {M. I.} and V. Bozza and Burgdorf, {M. J.} and G. D'Ago and S. Dib and {Figuera Jaimes}, R. and Fujii, {Y. I.} and S. Gill and Haikala, {L. K.} and Hinse, {T. C.} and M. Hundertmark and E. Khalouei and H. Korhonen and P. Longa-Pe{\~n}a and L. Mancini and N. Peixinho and M. Rabus and S. Rahvar and S. Sajadian and J. Skottfelt and C. Snodgrass and P. Spyratos and J. Tregloan-Reed and E. Unda-Sanzana and {von Essen}, C.",

note = "Publisher Copyright: {\textcopyright} 2019 The Author(s)",

year = "2019",

month = dec,

day = "1",

doi = "10.1093/mnras/stz2602",

language = "English",

volume = "490",

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Southworth, J, Dominik, M, Jørgensen, UG, Andersen, MI, Bozza, V, Burgdorf, MJ, D'Ago, G, Dib, S, Figuera Jaimes, R, Fujii, YI, Gill, S, Haikala, LK, Hinse, TC, Hundertmark, M, Khalouei, E, Korhonen, H, Longa-Peña, P, Mancini, L, Peixinho, N, Rabus, M, Rahvar, S, Sajadian, S, Skottfelt, J, Snodgrass, C, Spyratos, P, Tregloan-Reed, J, Unda-Sanzana, E & von Essen, C 2019, 'Transit timing variations in the WASP-4 planetary system', Monthly Notices of the Royal Astronomical Society, vol. 490, n.º 3, pp. 4230-4236. https://doi.org/10.1093/mnras/stz2602

TY - JOUR

T1 - Transit timing variations in the WASP-4 planetary system

AU - Southworth, John

AU - Dominik, M.

AU - Jørgensen, U. G.

AU - Andersen, M. I.

AU - Bozza, V.

AU - Burgdorf, M. J.

AU - D'Ago, G.

AU - Dib, S.

AU - Figuera Jaimes, R.

AU - Fujii, Y. I.

AU - Gill, S.

AU - Haikala, L. K.

AU - Hinse, T. C.

AU - Hundertmark, M.

AU - Khalouei, E.

AU - Korhonen, H.

AU - Longa-Peña, P.

AU - Mancini, L.

AU - Peixinho, N.

AU - Rabus, M.

AU - Rahvar, S.

AU - Sajadian, S.

AU - Skottfelt, J.

AU - Snodgrass, C.

AU - Spyratos, P.

AU - Tregloan-Reed, J.

AU - Unda-Sanzana, E.

AU - von Essen, C.

PY - 2019/12/1

Y1 - 2019/12/1

N2 - Transits in the planetary system WASP-4 were recently found to occur 80 s earlier than expected in observations from the TESS satellite. We present 22 new times of mid-transit that confirm the existence of transit timing variations, and are well fitted by a quadratic ephemeris with period decay dP/dt = −9.2 ± 1.1 ms yr−1. We rule out instrumental issues, stellar activity, and the Applegate mechanism as possible causes. The light-time effect is also not favoured due to the non-detection of changes in the systemic velocity. Orbital decay and apsidal precession are plausible but unproven. WASP-4 b is only the third hot Jupiter known to show transit timing variations to high confidence. We discuss a variety of observations of this and other planetary systems that would be useful in improving our understanding of WASP-4 in particular and orbital decay in general.

AB - Transits in the planetary system WASP-4 were recently found to occur 80 s earlier than expected in observations from the TESS satellite. We present 22 new times of mid-transit that confirm the existence of transit timing variations, and are well fitted by a quadratic ephemeris with period decay dP/dt = −9.2 ± 1.1 ms yr−1. We rule out instrumental issues, stellar activity, and the Applegate mechanism as possible causes. The light-time effect is also not favoured due to the non-detection of changes in the systemic velocity. Orbital decay and apsidal precession are plausible but unproven. WASP-4 b is only the third hot Jupiter known to show transit timing variations to high confidence. We discuss a variety of observations of this and other planetary systems that would be useful in improving our understanding of WASP-4 in particular and orbital decay in general.

KW - Stars: activity

KW - Stars: fundamental parameters

KW - Stars: individual: WASP-4

UR - http://www.scopus.com/inward/record.url?scp=85079679784&partnerID=8YFLogxK

U2 - 10.1093/mnras/stz2602

DO - 10.1093/mnras/stz2602

M3 - Article

AN - SCOPUS:85079679784

SN - 0035-8711

VL - 490

SP - 4230

EP - 4236

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 3

ER -

Transit timing variations in the WASP-4 planetary system

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