J/AJ/159/150 Transit times of 11 hot Jupiters (Patra+, 2020)
The continuing search for evidence of tidal orbital decay of hot Jupiters.
Patra K.C., Winn J.N., Holman M.J., Gillon M., Burdanov A., Jehin E.,
Delrez L., Pozuelos F.J., Barkaoui K., Benkhaldoun Z., Narita N., Fukui A.,
Kusakabe N., Kawauchi K., Terada Y., Bouma L.G., Weinberg N.N., Broome M.
<Astron. J., 159, 150 (2020)>
=2020AJ....159..150P 2020AJ....159..150P
ADC_Keywords: Exoplanets; Photometry, VRI; Photometry, ugriz
Keywords: Exoplanets ; Transits ; Exoplanet tides
Abstract:
Many of the known hot Jupiters are formally unstable to tidal orbital
decay. The only hot Jupiter for which orbital decay has been directly
detected is WASP-12, for which transit-timing measurements spanning
more than a decade have revealed that the orbital period is decreasing
at a rate of dP/dt∼10-9, corresponding to a reduced tidal quality
factor of about 2x105. Here, we present a compilation of
transit-timing data for WASP-12 and 11 other systems that are
especially favorable for detecting orbital decay: KELT-16; WASP-18,
19, 43, 72, 103, 114, and 122; HAT-P-23; HATS-18; and OGLE-TR-56. For
most of these systems we present new data that extend the time
baseline over which observations have been performed. None of the
systems besides WASP-12 display convincing evidence for period
changes, with typical upper limits on dP/dt on the order of 10-9 or
10-10, and lower limits on the reduced tidal quality factor on the
order of 105. One possible exception is WASP-19, which shows a
statistically significant trend, although it may be a spurious effect
of starspot activity.
Description:
Transits of KELT-16b, WASP-103b, HAT-P-23b, and WASP-114b were
observed with the 1.2m telescope at the Fred Lawrence Whipple
Observatory (FLWO) on Mount Hopkins in Arizona, between 2016 Jun -
2017 Oct. Time-series photometry was performed using images from the
KeplerCam detector and a Sloan r'-band filter.
Transits of WASP-19b, WASP-43b, WASP-18b, WASP-72b, and HATS-18 were
observed with the 0.6m Transiting Planets and Planetesimals Small
Telescope-South (TRAPPIST-South) telescope at Observatorio La Silla,
Chile, between 2014 Apr-2019 Apr.
Two additional transits of WASP-43b were obtained with the
TRAPPIST-North telescope at the Oukaimeden Observatory, Morocco, in
2018 March 13 and 2019 March 1.
Transits of OGLE-TR-56b were observed with the 6.5m Magellan Clay
Telescope at Las Campanas Observatory in Chile, on 2017 Jun 19.
Multicolor transits of WASP-12b were observed by the MuSCAT camera on
the 1.88m telescope at the Okayama Astrophysical Observatory in Japan,
on 2017 Jan 27 and 2018 Feb 12 and 13.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 76 30 Observation journal and measured mid-transit times
table3.dat 66 426 Transit times of all targets
refs.dat 67 48 References
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See also:
II/264 : ASAS Variable Stars in Southern hemisphere (Pojmanski+, 2005)
J/ApJ/692/L9 : Tidal evolution of transiting exoplanets (Levrard+, 2009)
J/ApJ/741/102 : 21 light curves of OGLE-TR-56b (Adams+, 2011)
J/AJ/141/179 : Transits of TrES-4b, HAT-P-3b and WASP-12b (Chan+, 2011)
J/A+A/529/A75 : Limb-darkening coefficients (Claret+, 2011)
J/ApJ/742/116 : Photometry of 4 massive transiting exoplanets (Bakos+, 2011)
J/ApJ/757/18 : RVs for 16 hot Jupiter host stars (Albrecht+, 2012)
J/A+A/542/A4 : WASP-43b thirty eclipses (Gillon+, 2012)
J/ApJ/757/161 : Spectroscopy of 56 exoplanet host stars (Torres+, 2012)
J/A+A/552/A82 : WASP-64b and WASP-72b light curves (Gillon+, 2013)
J/A+A/552/A2 : WASP-19b light curves (Lendl+, 2013)
J/A+A/551/A108 : Multi-site obs. of WASP-12 b transit (Maciejewski+, 2013)
J/MNRAS/436/2 : Transits of WASP-19b (Mancini+, 2013)
J/A+A/558/A106 : Chemical abundances for 83 transit hosts (Mortier+, 2013)
J/MNRAS/428/3671 : Transiting planet WASP-19b (Tregloan-Reed+, 2013)
J/A+A/563/A40 : WASP-43b g'r'i'z'JHK light curves (Chen+, 2014)
J/A+A/562/L3 : WASP-103b radial velocities and light curves (Gillon+, 2014)
J/A+A/563/A41 : WASP-43 OSIRIS transmission spectroscopy (Murgas+, 2014)
J/A+A/577/A54 : HAT-P23 and WASP-48 light curves (Ciceri+, 2015)
J/PASP/127/143 : WASP-39b and WASP-43b light curves (Ricci+, 2015)
J/MNRAS/447/711 : Transiting planet WASP-103 (Southworth+, 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/606/A18 : WASP-103b light curves (Lendl+, 2017)
J/AJ/154/4 : Times of transits and occultations of WASP-12b (Patra+,2017)
J/AJ/153/136 : Planets & their host stars with Gaia plxs (Stassun+, 2017)
J/AcA/68/371 : WASP and KELT planet transits (Maciejewski+, 2018)
J/AJ/155/165 : Dissipation in exoplanet hosts (Penev+, 2018)
J/AJ/157/43 : WASP-161b, WASP-163b and WASP-170b (Barkaoui+, 2019)
J/AJ/157/217 : Transit times of 5 hot Jupiter WASP exoplanets (Bouma+,2019)
J/AJ/157/235 : Observations of the Kepler field with TESS (Christ+, 2019)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- ID Target identifier
11 A1 --- m_ID Planet identifier within the star ID
13- 23 A11 "Y/M/D" Date UTC date of observation
25- 38 A14 --- Tel Telescope used (1)
40- 44 A5 --- Filt Filter used (g',r',i',z',V,I)
46- 48 I3 s Exp [7/180] Exposure time
50- 54 I5 --- Epoch [-4906/3290] Epoch number
56- 68 F13.5 d Tmid Barycentric Julian date (TDB) of mid-time
70- 76 F7.5 d e_Tmid [0.0002/0.007] Uncertainity on Tmid
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Note (1): Telescopes as follows:
ASAS = All Sky Automated Survey (Pojmanski 1997AcA....47..467P 1997AcA....47..467P ;
See II/264)
FLWO = KeplerCam on the 1.2m telescope at Fred Lawrence Whipple
Observatory on Mount Hopkins in Arizona
Magellan Clay = The 6.5m Magellan Clay Telescope at Las Campanas Observatory
in Chile
MuSCAT = The MuSCAT camera on the 1.88m telescope at the Okayama
Astrophysical Observatory in Japan
TRAPPIST-North = The Transiting Planets and Planetesimals Small
Telescope-North telescope at the Oukaimeden
Observatory, Morocco
TRAPPIST-South = The 0.6m Transiting Planets and Planetesimals Small
Telescope-South telescope at Observatorio La Silla,
Chile
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 10 A10 --- ID Target identifier
13- 18 I6 --- Epoch [-10182/3290] Epoch number
20- 32 F13.5 d Tmid [2448436/2458581] Barycentric Julian Date (TDB)
of mid-time
34- 41 E8.2 d e_Tmid [1e-05/0.01] Uncertainty in Tmid
43- 66 A24 --- Ref Reference(s) (see refs.dat file)
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Byte-by-byte Description of file: refs.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 A4 --- Ref Reference code
6- 24 A19 --- BibCode Bibcode of the reference
26- 45 A20 --- Auth First author's name(s)
47- 67 A21 --- Cat Reference of the VizieR catalog (if any)
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History:
From electronic version of the journal
(End) Prepared by [AAS], Coralie Fix [CDS], 06-May-2020