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WASP-4 transit timing variation from a comprehensive set of 129 transits. / Baluev, R. V.; Sokov, E. N.; Hoyer, S.; Huitson, C.; Da Silva, José A.R.S.; Evans, P.; Sokova, I. A.; Knight, C. R.; Shaidulin, V. S.

In: Monthly Notices of the Royal Astronomical Society: Letters, Vol. 496, No. 1, 07.2020, p. L11-L15.

Research output: Contribution to journal › Article › peer-review

Harvard

Baluev, RV, Sokov, EN, Hoyer, S, Huitson, C, Da Silva, JARS, Evans, P, Sokova, IA, Knight, CR & Shaidulin, VS 2020, 'WASP-4 transit timing variation from a comprehensive set of 129 transits', Monthly Notices of the Royal Astronomical Society: Letters, vol. 496, no. 1, pp. L11-L15. https://doi.org/10.1093/mnrasl/slaa069

APA

Baluev, R. V., Sokov, E. N., Hoyer, S., Huitson, C., Da Silva, J. A. R. S., Evans, P., Sokova, I. A., Knight, C. R., & Shaidulin, V. S. (2020). WASP-4 transit timing variation from a comprehensive set of 129 transits. Monthly Notices of the Royal Astronomical Society: Letters, 496(1), L11-L15. https://doi.org/10.1093/mnrasl/slaa069

Vancouver

Baluev RV, Sokov EN, Hoyer S, Huitson C, Da Silva JARS, Evans P et al. WASP-4 transit timing variation from a comprehensive set of 129 transits. Monthly Notices of the Royal Astronomical Society: Letters. 2020 Jul;496(1):L11-L15. https://doi.org/10.1093/mnrasl/slaa069

Author

Baluev, R. V. ; Sokov, E. N. ; Hoyer, S. ; Huitson, C. ; Da Silva, José A.R.S. ; Evans, P. ; Sokova, I. A. ; Knight, C. R. ; Shaidulin, V. S. / WASP-4 transit timing variation from a comprehensive set of 129 transits. In: Monthly Notices of the Royal Astronomical Society: Letters. 2020 ; Vol. 496, No. 1. pp. L11-L15.

BibTeX

@article{cfd063f25cec4f66b3cc07b493771f71,
title = "WASP-4 transit timing variation from a comprehensive set of 129 transits",
abstract = "We homogeneously reanalyse 124 transit light curves for the WASP-4 b hot Jupiter. This set involved new observations secured in 2019 and nearly all observations mentioned in the literature, including high-accuracy GEMINI/GMOS transmission spectroscopy of 2011-2014 and TESS observations of 2018. The analysis confirmed a non-linear transit timing variation (TTV) trend with $P/|dot{P}|sim hbox{17-30}$ Myr (1σ range), implying only half of the initial decay rate estimation. The trend significance is at least 3.4σ in the aggressively conservative treatment. Possible radial acceleration due to unseen companions is not revealed in Doppler data covering seven years 2007-2014, and radial acceleration of -15 m s-1 yr-1 reported in a recent preprint by another team is not confirmed. If present, it is a very non-linear radial velocity variation. Assuming that the entire TTV is tidal in nature, the tidal quality factor $Q-star {prime }sim hbox{(4.5-8.5)}times 104$ does not reveal a convincing disagreement with available theory predictions.",
keywords = "methods: data analysis, planetary systems, stars: individual: WASP-4, techniques: photometric, SYSTEM, PARAMETERS, EXOPLANETS, PLANET SEARCH, RADIAL-VELOCITY, stars: individual, WASP-4, JITTER, ANALYSIS TOOL",
author = "Baluev, {R. V.} and Sokov, {E. N.} and S. Hoyer and C. Huitson and {Da Silva}, {Jos{\'e} A.R.S.} and P. Evans and Sokova, {I. A.} and Knight, {C. R.} and Shaidulin, {V. S.}",
year = "2020",
month = jul,
doi = "10.1093/mnrasl/slaa069",
language = "English",
volume = "496",
pages = "L11--L15",
journal = "Monthly Notices of the Royal Astronomical Society",
issn = "0035-8711",
publisher = "Wiley-Blackwell",
number = "1",

}

RIS

TY - JOUR

T1 - WASP-4 transit timing variation from a comprehensive set of 129 transits

AU - Baluev, R. V.

AU - Sokov, E. N.

AU - Hoyer, S.

AU - Huitson, C.

AU - Da Silva, José A.R.S.

AU - Evans, P.

AU - Sokova, I. A.

AU - Knight, C. R.

AU - Shaidulin, V. S.

PY - 2020/7

Y1 - 2020/7

N2 - We homogeneously reanalyse 124 transit light curves for the WASP-4 b hot Jupiter. This set involved new observations secured in 2019 and nearly all observations mentioned in the literature, including high-accuracy GEMINI/GMOS transmission spectroscopy of 2011-2014 and TESS observations of 2018. The analysis confirmed a non-linear transit timing variation (TTV) trend with $P/|dot{P}|sim hbox{17-30}$ Myr (1σ range), implying only half of the initial decay rate estimation. The trend significance is at least 3.4σ in the aggressively conservative treatment. Possible radial acceleration due to unseen companions is not revealed in Doppler data covering seven years 2007-2014, and radial acceleration of -15 m s-1 yr-1 reported in a recent preprint by another team is not confirmed. If present, it is a very non-linear radial velocity variation. Assuming that the entire TTV is tidal in nature, the tidal quality factor $Q-star {prime }sim hbox{(4.5-8.5)}times 104$ does not reveal a convincing disagreement with available theory predictions.

AB - We homogeneously reanalyse 124 transit light curves for the WASP-4 b hot Jupiter. This set involved new observations secured in 2019 and nearly all observations mentioned in the literature, including high-accuracy GEMINI/GMOS transmission spectroscopy of 2011-2014 and TESS observations of 2018. The analysis confirmed a non-linear transit timing variation (TTV) trend with $P/|dot{P}|sim hbox{17-30}$ Myr (1σ range), implying only half of the initial decay rate estimation. The trend significance is at least 3.4σ in the aggressively conservative treatment. Possible radial acceleration due to unseen companions is not revealed in Doppler data covering seven years 2007-2014, and radial acceleration of -15 m s-1 yr-1 reported in a recent preprint by another team is not confirmed. If present, it is a very non-linear radial velocity variation. Assuming that the entire TTV is tidal in nature, the tidal quality factor $Q-star {prime }sim hbox{(4.5-8.5)}times 104$ does not reveal a convincing disagreement with available theory predictions.

KW - methods: data analysis

KW - planetary systems

KW - stars: individual: WASP-4

KW - techniques: photometric

KW - SYSTEM

KW - PARAMETERS

KW - EXOPLANETS

KW - PLANET SEARCH

KW - RADIAL-VELOCITY

KW - stars: individual

KW - WASP-4

KW - JITTER

KW - ANALYSIS TOOL

UR - http://www.scopus.com/inward/record.url?scp=85087033585&partnerID=8YFLogxK

U2 - 10.1093/mnrasl/slaa069

DO - 10.1093/mnrasl/slaa069

M3 - Article

AN - SCOPUS:85087033585

VL - 496

SP - L11-L15

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

IS - 1

ER -

ID: 60573249