J/AJ/160/155 Light curve segments of 22 host stars with TESS (Wong+, 2020)
Systematic phase curve study of known transiting systems from year one of the
TESS mission.
Wong I., Shporer A., Daylan T., Benneke B., Fetherolf T., Kane S.R.,
Ricker G.R., Vanderspek R., Latham D.W., Winn J.N., Jenkins J.M., Boyd P.T.,
Glidden A., Goeke R.F., Sha L., Ting E.B., Yahalomi D.
<Astron. J., 160, 155 (2020)>
=2020AJ....160..155W 2020AJ....160..155W
ADC_Keywords: Exoplanets; Stars, variable; Photometry, RI
Keywords: Exoplanet astronomy ; Exoplanet atmospheres
Abstract:
We present a systematic phase curve analysis of known transiting
systems observed by the Transiting Exoplanet Survey Satellite (TESS)
during year one of the primary mission. Using theoretical predictions
for the amplitude of the planetary longitudinal atmospheric brightness
modulation, stellar ellipsoidal distortion and Doppler boosting, as
well as brightness considerations to select targets with likely
detectable signals, we applied a uniform data processing and
light-curve modeling framework to fit the full-orbit phase curves of
22 transiting systems with planet-mass or brown dwarf companions,
including previously published systems. Statistically significant
secondary eclipse depths and/or atmospheric brightness modulation
amplitudes were measured for HIP65A, WASP-18, WASP-19, WASP-72,
WASP-100, WASP-111, WASP-121, and WASP-122/KELT-14. For WASP-100b, we
found marginal evidence that the brightest region of the atmosphere is
shifted eastward away from the substellar point. We detected
significant ellipsoidal distortion signals in the light curves of
HIP65A, TOI-503, WASP-18, and WASP-30, with HIP65A, TOI-503 and
WASP-18 also exhibiting Doppler boosting. The measured amplitudes of
these signals agree with the predictions of theoretical models.
Combining the optical secondary eclipse depths with previously
published Spitzer 3.6 and 4.5µm measurements, we derived dayside
brightness temperatures and visible-light geometric albedos for a
subset of the analyzed systems. We also calculated updated transit
ephemerides combining the transit timings from the TESS light curves
with previous literature values.
Description:
During year one of the TESS primary mission (2018 July 25 to 2019 July
18), the spacecraft observed most of the southern ecliptic hemisphere.
TESS has four identical wide-field cameras, each with an effective
aperture diameter of 10cm. The Southern Sky was divided into 13
sectors; each sector was observed for 27.4days. TESS utilizes a
red-optical bandpass spanning 600-1000nm, centered on the Cousins
I-band (λ=786.5nm).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablea1.dat 97 323 Summary of light curve segments
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See also:
J/ApJ/652/1715 : Four transits of the exoplanet XO-1b (Holman+, 2006)
J/ApJ/726/L19 : Gunn r photometry of WASP-30 (Anderson+, 2011)
J/MNRAS/422/1988 : Three short-period, transiting exoplanets (Anderson+, 2012)
J/MNRAS/422/2600 : KOI-74 radial velocities and fluxes (Bloemen+, 2012)
J/A+A/547/A61 : WASP78 and WASP79 RV and photometric data (Smalley+, 2012)
J/A+A/552/A82 : WASP-64b and WASP-72b light curves (Gillon+, 2013)
J/A+A/549/A18 : WASP-30 and J1219-39 light & velocity curves (Triaud+, 2013)
J/MNRAS/440/1982 : WASP 95-101 transits (Hellier+, 2014)
J/ApJ/788/92 : Hot Jupiter Kepler-13Ab planet occultation (Shporer+, 2014)
J/ApJ/809/77 : Transiting Exoplanet Survey Satellite (Sullivan+, 2015)
J/MNRAS/459/1393 : Multi-band light curve of WASP-36 (Mancini+, 2016)
J/AJ/151/138 : Discovery hot Jupiters KELT-14b & KELT-15b (Rodriguez+,2016)
J/A+A/585/A126 : 3 irradiated bloated hot Jupiters RV and phot. (West+, 2016)
J/A+A/600/A30 : Limb-darkening for TESS satellite (Claret, 2017)
J/MNRAS/465/3693 : 7 WASP-South transiting exoplanets (Hellier+, 2017)
J/AJ/153/136 : Planets and host stars with Gaia parallaxes (Stassun+, 2017)
J/A+A/618/A20 : Limb-darkening for TESS, Kepler, Corot, MOST (Claret, 2018)
J/AJ/156/102 : TESS Input Catalog and Candidate Target List (Stassun+,2018)
J/AJ/157/217 : Transit times of 5 hot Jupiter WASP exoplanets (Bouma+,2019)
J/AJ/158/38 : New substellar discoveries Kepler and K2 (Carmichael+, 2019)
J/A+A/637/A36 : WASP-121b optical phase curve (Bourrier+, 2020)
J/AJ/159/150 : Transit times of 11 hot Jupiters (Patra+, 2020)
Byte-by-byte Description of file: tablea1.dat
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Bytes Format Units Label Explanations
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1- 16 A16 --- Name Target name
18- 19 I2 --- Sector [1/13] TESS sector
21 I1 --- Sporb [1/2] Spacecraft orbit
23 I1 --- Seq [1/5] Sequential segment number
25- 28 I4 --- Nraw [1044/2659] Number of data points in raw light
curve (1)
30- 33 I4 --- Ntrim [702/2624]? Number of data points in trimmed light
curve (1)
35- 41 F7.3 d BJDs [325/679] TDB Start time of data segment,
BJD-2458000
43- 49 F7.3 d BJDe [327/683] TDB End time of data segment,
BJD-2458000
51 I1 --- Order [0/5]? Optimal order of detrending polynomial
53- 97 A45 --- Note Comments about data trimming
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Note (1): Trimming includes removing flagged points, filtering out outliers,
and trimming ramps.
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History:
From electronic version of the journal
(End) Prepared by [AAS], Coralie Fix [CDS], 08-Dec-2020