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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; Fernández-Lajús, E.; Sisto, R. P. Di; Baştürk, Ö.; Bretton, M.; Wunsche, A.; Hentunen, V. -P.; Shadick, S.; Jongen, Y.; Kang, W.; Kim, T.; Pakštienė, 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.

In: Monthly Notices of the Royal Astronomical Society, 19.09.2019.

Research output: Contribution to journalArticle

Harvard

Baluev, RV, Sokov, EN, Jones, HRA, Shaidulin, VS, Sokova, IA, Nielsen, LD, Benni, P, Schneiter, EM, D'Angelo, CV, Fernández-Lajús, E, Sisto, RPD, Baştürk, Ö, Bretton, M, Wunsche, A, Hentunen, V-P, Shadick, S, Jongen, Y, Kang, W, Kim, T, Pakštienė, 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. https://doi.org/10.1093/mnras/stz2620

APA

Vancouver

Author

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 ; Fernández-Lajús, E. ; Sisto, R. P. Di ; Baştürk, Ö. ; Bretton, M. ; Wunsche, A. ; Hentunen, V. -P. ; Shadick, S. ; Jongen, Y. ; Kang, W. ; Kim, T. ; Pakštienė, 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. In: Monthly Notices of the Royal Astronomical Society. 2019.

Bibtex

@article{a09dce36f4ef4753b0570388bba2a58a,
title = "Homogeneously derived transit timings for 17 exoplanets and reassessed TTV trends for WASP-12 and WASP-4",
abstract = "We homogeneously analyse $\sim 3.2\times 10^5$ photometric measurements for $\sim 1100$ transit lightcurves belonging to $17$ exoplanet hosts. The photometric data cover $16$ years 2004--2019 and include amateur and professional observations. Old archival lightcurves 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 nonlinear 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 about $(-7.5\pm 2.2)$~m/s/yr, 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 homogeneus TTV sample, including $10$ ground-based EXPANSION lightcurves 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 = "astro-ph.EP",
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. Fern{\'a}ndez-Laj{\'u}s and Sisto, {R. P. Di} and {\"O}. Başt{\"u}rk and M. Bretton and A. Wunsche and Hentunen, {V. -P.} and S. Shadick and Y. Jongen and W. Kang and T. Kim and E. Pakštienė 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.}",
note = "19 pages, 4 figures, 6 tables; revised manuscript submitted to MNRAS; online-only supplements are in the download archive",
year = "2019",
month = "9",
day = "19",
doi = "10.1093/mnras/stz2620",
language = "English",
journal = "Monthly Notices of the Royal Astronomical Society",
issn = "0035-8711",
publisher = "Oxford University Press",

}

RIS

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 - Fernández-Lajús, E.

AU - Sisto, R. P. Di

AU - Baştürk, Ö.

AU - Bretton, M.

AU - Wunsche, A.

AU - Hentunen, V. -P.

AU - Shadick, S.

AU - Jongen, Y.

AU - Kang, W.

AU - Kim, T.

AU - Pakštienė, 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.

N1 - 19 pages, 4 figures, 6 tables; revised manuscript submitted to MNRAS; online-only supplements are in the download archive

PY - 2019/9/19

Y1 - 2019/9/19

N2 - We homogeneously analyse $\sim 3.2\times 10^5$ photometric measurements for $\sim 1100$ transit lightcurves belonging to $17$ exoplanet hosts. The photometric data cover $16$ years 2004--2019 and include amateur and professional observations. Old archival lightcurves 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 nonlinear 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 about $(-7.5\pm 2.2)$~m/s/yr, 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 homogeneus TTV sample, including $10$ ground-based EXPANSION lightcurves 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 $\sim 3.2\times 10^5$ photometric measurements for $\sim 1100$ transit lightcurves belonging to $17$ exoplanet hosts. The photometric data cover $16$ years 2004--2019 and include amateur and professional observations. Old archival lightcurves 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 nonlinear 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 about $(-7.5\pm 2.2)$~m/s/yr, 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 homogeneus TTV sample, including $10$ ground-based EXPANSION lightcurves 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 - astro-ph.EP

U2 - 10.1093/mnras/stz2620

DO - 10.1093/mnras/stz2620

M3 - Article

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

ER -