J/ApJS/270/14 Transit times of hot Jupiters from TESS (Wang+, 2024)
Long-term variations in the orbital period of hot Jupiters from transit-timing
analysis using TESS survey data.
Wang W., Zhang Z., Chen Z., Wang Y., Yu C., Ma B.
<Astrophys. J. Suppl. Ser., 270, 14 (2024)>
=2024ApJS..270...14W 2024ApJS..270...14W
ADC_Keywords: Exoplanets; Photometry; Optical
Keywords: Hot Jupiters ; Transit timing variation method ; Transit photometry
Abstract:
Many hot Jupiters may experience orbital decays, which are manifested
as long-term transit-timing variations. We have analyzed 7068 transits
from the Transiting Exoplanet Survey Satellite (TESS) for a sample of
326 hot Jupiters. These new mid-transit-time data allow us to update
ephemerides for these systems. By combining the new TESS
transit-timing data with archival data, we searched for possible
long-term variations in the orbital period in these hot Jupiters using
a linear and a quadratic ephemeris model. We identified 26 candidates
that exhibit possible long-term variations of the orbital period,
including 18 candidates with decreasing orbital periods and eight
candidates with increasing orbital periods. Among them, 12 candidates
failed our leave- one-out cross validation test and thus should be
considered to be marginal candidates. In addition to tidal
interaction, alternative mechanisms such as apsidal precession, the
Romer effect, and the Applegate effect could also contribute to the
variations during the observed period. The ephemerides derived in this
work are useful for scheduling follow-up observations for these hot
Jupiters in the future. The Python code (PdotQuest,
http://github.com/AeoN400/PdotQuest) used to generate the ephemerides
is made available online.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 42 7069 Transit times for 326 hot Jupiters
table2.dat 82 352 Ephemerides for 326 hot Jupiters
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See also:
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J/ApJ/640/1051 : 25pc sample of Sun-like stars (Grether+, 2006)
J/AJ/133/1828 : Transit light curves of HD 189733 (Winn+, 2007)
J/ApJ/657/1098 : Transit of TrES-1 (Winn+, 2007)
J/ApJ/683/1076 : Transits of exoplanet XO-3b (Winn+, 2008)
J/ApJ/696/1950 : Sloan iz light curves of HAT-P-10 (Bakos+, 2009)
J/A+A/501/785 : Discovery and characterization of WASP-6b (Gillon+, 2009)
J/ApJ/692/L9 : Tidal evolution of transiting exoplanets (Levrard+, 2009)
J/A+A/508/1011 : Planetary transit of TrES-1 and TrES-2 (Rabus+, 2009)
J/ApJ/691/1145 : Spectrophotometry of TrES-3 and TrES-4 (Sozzetti+, 2009)
J/A+A/502/395 : WASP-11b (West+, 2009)
J/AJ/137/3826 : Two transits of the giant planet WASP-4b (Winn+, 2009)
J/ApJ/709/159 : Relative Ic photometry of WASP-17 (Anderson+, 2010)
J/MNRAS/408/1494 : Planetary transits of TrES-2 and TrES-3 (Colon+, 2010)
J/A+A/534/A16 : WASP-22 and WASP-26 phot. and velocities (Anderson+, 2011)
J/ApJ/742/116 : Phot. of four massive transiting exoplanets (Bakos+, 2011)
J/AJ/141/179 : Transits of TrES-4b, HAT-P-3b and WASP-12b (Chan+, 2011)
J/ApJ/733/127 : Four transits of WASP-4b (Sanchis-Ojeda+, 2011)
J/MNRAS/422/1988 : Three short-period, transiting exoplanets (Anderson+, 2012)
J/AJ/144/19 : Follow-up phot. for HAT-P-34 through HAT-P-37 (Bakos+, 2012)
J/MNRAS/426/739 : Velocities for 7 transiting hot Jupiters (Hellier+, 2012)
J/A+A/539/A159 : WASP-4b transit griz light curves (Nikolov+, 2012)
J/MNRAS/426/1338 : Transiting planetary system WASP-17 (Southworth+, 2012)
J/A+A/558/A86 : HAT-P-42b and HAT-P-43b ri light curves (Boisse+, 2013)
J/AJ/145/68 : Five new transit light curves of TrES-3 (Jiang+, 2013)
J/ApJ/764/8 : APOSTLE r'-band transit LCs of TrES-3b (Kundurthy+, 2013)
J/A+A/552/A2 : WASP-19b light curves (Lendl+, 2013)
J/MNRAS/436/2 : Transits of WASP-19b (Mancini+, 2013)
J/MNRAS/434/1300 : WASP-15 and WASP-16 light curves (Southworth+, 2013)
J/MNRAS/428/3671 : Transiting planet WASP-19b (Tregloan-Reed+, 2013)
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J/MNRAS/450/1760 : Transiting planet WASP-6b (Tregloan-Reed+, 2015)
J/AJ/151/17 : Eight transiting light curves of WASP-43b (Jiang+, 2016)
J/A+A/588/L6 : WASP-12 transit light curves (Maciejewski+ 2016)
J/AJ/152/127 : Sloan i follow-up light curves of HATS-18 (Penev+, 2016)
J/A+A/596/A47 : FORS2 transmission sp. of WASP-17b (Sedaghati+, 2016)
J/MNRAS/457/4205 : WASP-22, WASP-41, WASP-42, WASP-55 (Southworth+, 2016)
J/ApJ/820/87 : XO-4b 3yr observations with DEMONEX (Villanueva+, 2016)
J/AJ/154/4 : Times of transits & occultations of WASP-12b (Patra+, 2017)
J/AJ/154/237 : HARPS-N radial velocities of WASP-47 (Vanderburg+, 2017)
J/MNRAS/474/876 : WASP-80b wavelength-binned light curves (Kirk+, 2018)
J/AcA/68/371 : WASP and KELT planet transits (Maciejewski+, 2018)
J/AJ/155/165 : Dissipation in exoplanet hosts from spin-up (Penev+, 2018)
J/AJ/157/43 : WASP-161b, WASP-163b and WASP-170b (Barkaoui+, 2019)
J/AJ/157/217 : Transit times of hot Jupiter WASP exoplanets (Bouma+, 2019)
J/A+A/622/A81 : 15 hot Jupiter exoplanets light curves (Mallonn+, 2019)
J/A+A/623/A57 : WASP-121 b Swift UVOT NUV transit observations (Salz+, 2019)
J/MNRAS/490/4230 : Transiting planet WASP-4b (Southworth+, 2019)
J/ApJ/893/L29 : WASP-4 RVs & hot Jupiter period changes (Bouma+, 2020)
J/AJ/159/63 : New AO obs. of exoplanets & BD companions (Bowler+, 2020)
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J/ApJ/888/L5 : Transits, occultation times and RVs of WASP-12b (Yee+, 2020)
J/A+A/656/A88 : TrES-5 photometric timeseries (Maciejewski+, 2021)
J/AJ/161/72 : Transit and occultation times for WASP-12b (Turner+, 2021)
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J/MNRAS/512/2062 : 10 exoplanet systems transit timing (Basturk+, 2022)
J/AJ/164/220 : 10 exoplanets from the ETD (Hagey+, 2022)
J/ApJS/259/62 : TESS transit timing of hot Jupiters (Ivshina+, 2022)
J/A+A/667/A127 : Phot. timeseries and transit times (Maciejewski+, 2022)
J/MNRAS/509/1447 : Light curves of KELT-16 (Mancini+, 2022)
J/AJ/164/198 : Transit LC of TrES-3b and Qatar-1b (Mannaday+, 2022)
J/MNRAS/515/3212 : Transiting planet HATS-18b (Southworth+, 2022)
J/AJ/163/281 : RV, transit & occultation of WASP-4 (Turner+, 2022)
J/AJ/163/175 : WASP-12 individual transit fit with TESS (Wong+, 2022)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 15 A15 --- Name Planetary identifier
17- 20 I4 --- Epoch [-57/6095] Epoch number
22- 34 F13.5 d Tc Barycentric Julian Date of transit; TDB
36- 42 F7.5 d e_Tc [3e-5/0.005] Uncertainty in Tc
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 1 A1 --- Type Planet type (1)
3- 17 A15 --- Name Planetary identifier
19- 32 F14.6 d T0 Julian Date of transit
34- 41 F8.6 d e_T0 [5e-6/0.005] Uncertainty in T0
43- 54 F12.9 d P0 [0.78/21.22] Orbital period
56- 66 F11.9 d e_P0 [6e-9/1.5e-5] Uncertainty in P0
68- 74 F7.2 ms/yr dP/dt [-170/120]? Constant period change rate
76- 80 F5.2 ms/yr e_dP/dt [0.29/26]? Uncertainty in dP/dt
82- 82 I1 --- sigma [3/5]? Rejection sigma
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Note (1): Type code as follows:
C = Candidate. The ephemerides of TTV candidates are presented
on two separate lines as they were fitted by a quadratic
model and using different sigma-rejection schemes.
S = Sample. The ephemerides of the TTV sample are fitted with a
linear model. This data is presented on a single line and
there is no period change information.
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 29-Feb-2024