Homogeneously derived transit timings for 17 exoplanets and reassessed TTV trends for WASP-12 and WASP-4

R. V. Baluev, E. N. Sokov, H. R. A. Jones, V. Sh. Shaidulin, I. A. Sokova, L. D. Nielsen, P. Benni, E. M. Schneiter, C. Villarreal D'Angelo, E. Fernandez-Lajus, R. P. Di Sisto, O. Basturk, M. Bretton, A. Wunsche, V-P Hentunen, S. Shadick, Y. Jongen, W. Kang, T. Kim, E. PakstieneJ. K. T. Qvam, C. R. Knight, P. Guerra, A. Marchini, F. Salvaggio, R. Papini, P. Evans, M. Salisbury, F. Garcia, D. Molina, J. Garlitz, N. Esseiva, Y. Ogmen, Yu Karavaev, S. Rusov, M. A. Ibrahimov, R. G. Karimov

Результат исследований: Научные публикации в периодических изданияхстатья

1 цитирование (Scopus)

Выдержка

We homogeneously analyse similar to 3.2 x 10(5) photometric measurements for similar to 1100 transit light curves belonging to 17 exoplanet hosts. The photometric data cover 16 years (2004-2019) and include amateur and professional observations. Old archival light curves were reprocessed using up-to-date exoplanetary parameters and empirically debiased limb-darkening models. We also derive self-consistent transit and radial-velocity fits for 13 targets. We confirm the non-linear transit timing variation (TTV) trend in the WASP-12 data at a high significance, and with a consistent magnitude. However, Doppler data reveal hints of a radial acceleration of about -7.5 +/- 2.2 ms(-1) yr(-1), indicating the presence of unseen distant companions, and suggesting that roughly 10 per cent of the observed TTV was induced via the light-travel (or Roemer) effect. For WASP-4, a similar TTV trend suspected after the recent TESS observations appears controversial and model dependent. It is not supported by our homogeneous TTV sample, including 10 ground-based EXPANSION light curves obtained in 2018 simultaneously with TESS. Even if the TTV trend itself does exist in WASP-4, its magnitude and tidal nature are uncertain. Doppler data cannot entirely rule out the Roemer effect induced by possible distant companions.

Язык оригиналаАнглийский
Страницы (с-по)1294-1312
ЖурналMonthly Notices of the Royal Astronomical Society
Том490
Номер выпуска1
Ранняя дата в режиме онлайн19 сен 2019
DOI
СостояниеОпубликовано - ноя 2019

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Baluev, R. V. ; Sokov, E. N. ; Jones, H. R. A. ; Shaidulin, V. Sh. ; Sokova, I. A. ; Nielsen, L. D. ; Benni, P. ; Schneiter, E. M. ; D'Angelo, C. Villarreal ; Fernandez-Lajus, E. ; Di Sisto, R. P. ; Basturk, O. ; Bretton, M. ; Wunsche, A. ; Hentunen, V-P ; Shadick, S. ; Jongen, Y. ; Kang, W. ; Kim, T. ; Pakstiene, E. ; Qvam, J. K. T. ; Knight, C. R. ; Guerra, P. ; Marchini, A. ; Salvaggio, F. ; Papini, R. ; Evans, P. ; Salisbury, M. ; Garcia, F. ; Molina, D. ; Garlitz, J. ; Esseiva, N. ; Ogmen, Y. ; Karavaev, Yu ; Rusov, S. ; Ibrahimov, M. A. ; Karimov, R. G. / Homogeneously derived transit timings for 17 exoplanets and reassessed TTV trends for WASP-12 and WASP-4. В: Monthly Notices of the Royal Astronomical Society. 2019 ; Том 490, № 1. стр. 1294-1312.
@article{ff522764478f49dd9a3f19e0f4db9a8c,
title = "Homogeneously derived transit timings for 17 exoplanets and reassessed TTV trends for WASP-12 and WASP-4",
abstract = "We homogeneously analyse similar to 3.2 x 10(5) photometric measurements for similar to 1100 transit light curves belonging to 17 exoplanet hosts. The photometric data cover 16 years (2004-2019) and include amateur and professional observations. Old archival light curves were reprocessed using up-to-date exoplanetary parameters and empirically debiased limb-darkening models. We also derive self-consistent transit and radial-velocity fits for 13 targets. We confirm the non-linear transit timing variation (TTV) trend in the WASP-12 data at a high significance, and with a consistent magnitude. However, Doppler data reveal hints of a radial acceleration of about -7.5 +/- 2.2 ms(-1) yr(-1), indicating the presence of unseen distant companions, and suggesting that roughly 10 per cent of the observed TTV was induced via the light-travel (or Roemer) effect. For WASP-4, a similar TTV trend suspected after the recent TESS observations appears controversial and model dependent. It is not supported by our homogeneous TTV sample, including 10 ground-based EXPANSION light curves obtained in 2018 simultaneously with TESS. Even if the TTV trend itself does exist in WASP-4, its magnitude and tidal nature are uncertain. Doppler data cannot entirely rule out the Roemer effect induced by possible distant companions.",
keywords = "methods: data analysis, methods: statistical, techniques: photometric, techniques: radial velocities, surveys, planetary systems, HIGH-PRECISION PHOTOMETRY, LIMB-DARKENING COEFFICIENTS, STELLAR ATMOSPHERE MODELS, LIGHT-CURVE PROJECT, PLANETARY SYSTEM, RADIAL-VELOCITY, HOT JUPITER, TRANSMISSION SPECTRUM, PHYSICAL-PROPERTIES, IMPROVED PARAMETERS",
author = "Baluev, {R. V.} and Sokov, {E. N.} and Jones, {H. R. A.} and Shaidulin, {V. Sh.} and Sokova, {I. A.} and Nielsen, {L. D.} and P. Benni and Schneiter, {E. M.} and D'Angelo, {C. Villarreal} and E. Fernandez-Lajus and {Di Sisto}, {R. P.} and O. Basturk and M. Bretton and A. Wunsche and V-P Hentunen and S. Shadick and Y. Jongen and W. Kang and T. Kim and E. Pakstiene and Qvam, {J. K. T.} and Knight, {C. R.} and P. Guerra and A. Marchini and F. Salvaggio and R. Papini and P. Evans and M. Salisbury and F. Garcia and D. Molina and J. Garlitz and N. Esseiva and Y. Ogmen and Yu Karavaev and S. Rusov and Ibrahimov, {M. A.} and Karimov, {R. G.}",
year = "2019",
month = "11",
doi = "10.1093/mnras/stz2620",
language = "Английский",
volume = "490",
pages = "1294--1312",
journal = "Monthly Notices of the Royal Astronomical Society",
issn = "0035-8711",
publisher = "Wiley-Blackwell",
number = "1",

}

Baluev, RV, Sokov, EN, Jones, HRA, Shaidulin, VS, Sokova, IA, Nielsen, LD, Benni, P, Schneiter, EM, D'Angelo, CV, Fernandez-Lajus, E, Di Sisto, RP, Basturk, O, Bretton, M, Wunsche, A, Hentunen, V-P, Shadick, S, Jongen, Y, Kang, W, Kim, T, Pakstiene, E, Qvam, JKT, Knight, CR, Guerra, P, Marchini, A, Salvaggio, F, Papini, R, Evans, P, Salisbury, M, Garcia, F, Molina, D, Garlitz, J, Esseiva, N, Ogmen, Y, Karavaev, Y, Rusov, S, Ibrahimov, MA & Karimov, RG 2019, 'Homogeneously derived transit timings for 17 exoplanets and reassessed TTV trends for WASP-12 and WASP-4', Monthly Notices of the Royal Astronomical Society, том. 490, № 1, стр. 1294-1312. https://doi.org/10.1093/mnras/stz2620

Homogeneously derived transit timings for 17 exoplanets and reassessed TTV trends for WASP-12 and WASP-4. / Baluev, R. V.; Sokov, E. N.; Jones, H. R. A.; Shaidulin, V. Sh.; Sokova, I. A.; Nielsen, L. D.; Benni, P.; Schneiter, E. M.; D'Angelo, C. Villarreal; Fernandez-Lajus, E.; Di Sisto, R. P.; Basturk, O.; Bretton, M.; Wunsche, A.; Hentunen, V-P; Shadick, S.; Jongen, Y.; Kang, W.; Kim, T.; Pakstiene, E.; Qvam, J. K. T.; Knight, C. R.; Guerra, P.; Marchini, A.; Salvaggio, F.; Papini, R.; Evans, P.; Salisbury, M.; Garcia, F.; Molina, D.; Garlitz, J.; Esseiva, N.; Ogmen, Y.; Karavaev, Yu; Rusov, S.; Ibrahimov, M. A.; Karimov, R. G.

В: Monthly Notices of the Royal Astronomical Society, Том 490, № 1, 11.2019, стр. 1294-1312.

Результат исследований: Научные публикации в периодических изданияхстатья

TY - JOUR

T1 - Homogeneously derived transit timings for 17 exoplanets and reassessed TTV trends for WASP-12 and WASP-4

AU - Baluev, R. V.

AU - Sokov, E. N.

AU - Jones, H. R. A.

AU - Shaidulin, V. Sh.

AU - Sokova, I. A.

AU - Nielsen, L. D.

AU - Benni, P.

AU - Schneiter, E. M.

AU - D'Angelo, C. Villarreal

AU - Fernandez-Lajus, E.

AU - Di Sisto, R. P.

AU - Basturk, O.

AU - Bretton, M.

AU - Wunsche, A.

AU - Hentunen, V-P

AU - Shadick, S.

AU - Jongen, Y.

AU - Kang, W.

AU - Kim, T.

AU - Pakstiene, E.

AU - Qvam, J. K. T.

AU - Knight, C. R.

AU - Guerra, P.

AU - Marchini, A.

AU - Salvaggio, F.

AU - Papini, R.

AU - Evans, P.

AU - Salisbury, M.

AU - Garcia, F.

AU - Molina, D.

AU - Garlitz, J.

AU - Esseiva, N.

AU - Ogmen, Y.

AU - Karavaev, Yu

AU - Rusov, S.

AU - Ibrahimov, M. A.

AU - Karimov, R. G.

PY - 2019/11

Y1 - 2019/11

N2 - We homogeneously analyse similar to 3.2 x 10(5) photometric measurements for similar to 1100 transit light curves belonging to 17 exoplanet hosts. The photometric data cover 16 years (2004-2019) and include amateur and professional observations. Old archival light curves were reprocessed using up-to-date exoplanetary parameters and empirically debiased limb-darkening models. We also derive self-consistent transit and radial-velocity fits for 13 targets. We confirm the non-linear transit timing variation (TTV) trend in the WASP-12 data at a high significance, and with a consistent magnitude. However, Doppler data reveal hints of a radial acceleration of about -7.5 +/- 2.2 ms(-1) yr(-1), indicating the presence of unseen distant companions, and suggesting that roughly 10 per cent of the observed TTV was induced via the light-travel (or Roemer) effect. For WASP-4, a similar TTV trend suspected after the recent TESS observations appears controversial and model dependent. It is not supported by our homogeneous TTV sample, including 10 ground-based EXPANSION light curves obtained in 2018 simultaneously with TESS. Even if the TTV trend itself does exist in WASP-4, its magnitude and tidal nature are uncertain. Doppler data cannot entirely rule out the Roemer effect induced by possible distant companions.

AB - We homogeneously analyse similar to 3.2 x 10(5) photometric measurements for similar to 1100 transit light curves belonging to 17 exoplanet hosts. The photometric data cover 16 years (2004-2019) and include amateur and professional observations. Old archival light curves were reprocessed using up-to-date exoplanetary parameters and empirically debiased limb-darkening models. We also derive self-consistent transit and radial-velocity fits for 13 targets. We confirm the non-linear transit timing variation (TTV) trend in the WASP-12 data at a high significance, and with a consistent magnitude. However, Doppler data reveal hints of a radial acceleration of about -7.5 +/- 2.2 ms(-1) yr(-1), indicating the presence of unseen distant companions, and suggesting that roughly 10 per cent of the observed TTV was induced via the light-travel (or Roemer) effect. For WASP-4, a similar TTV trend suspected after the recent TESS observations appears controversial and model dependent. It is not supported by our homogeneous TTV sample, including 10 ground-based EXPANSION light curves obtained in 2018 simultaneously with TESS. Even if the TTV trend itself does exist in WASP-4, its magnitude and tidal nature are uncertain. Doppler data cannot entirely rule out the Roemer effect induced by possible distant companions.

KW - methods: data analysis

KW - methods: statistical

KW - techniques: photometric

KW - techniques: radial velocities

KW - surveys

KW - planetary systems

KW - HIGH-PRECISION PHOTOMETRY

KW - LIMB-DARKENING COEFFICIENTS

KW - STELLAR ATMOSPHERE MODELS

KW - LIGHT-CURVE PROJECT

KW - PLANETARY SYSTEM

KW - RADIAL-VELOCITY

KW - HOT JUPITER

KW - TRANSMISSION SPECTRUM

KW - PHYSICAL-PROPERTIES

KW - IMPROVED PARAMETERS

U2 - 10.1093/mnras/stz2620

DO - 10.1093/mnras/stz2620

M3 - статья

VL - 490

SP - 1294

EP - 1312

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

IS - 1

ER -