J/AJ/162/127 Lightcurve phases from 2nd year TESS primary mission (Wong+, 2021)
Visible-light phase curves from the second Year of the TESS primary mission.
Wong I., Kitzmann D., Shporer A., Heng K., Fetherolf T., Benneke B.,
Daylan T., Kane S.R., Vanderspek R., Seager S., Winn J.N., Jenkins J.M.,
Ting E.B.
<Astron. J., 162, 127-127 (2021)>
=2021AJ....162..127W 2021AJ....162..127W (SIMBAD/NED BibCode)
ADC_Keywords: Exoplanets; Photometry; Optical
Keywords: Exoplanet astronomy
Abstract:
We carried out a systematic study of full-orbit phase curves for known
transiting systems in the northern ecliptic sky that were observed
during Year 2 of the TESS primary mission. We applied the same
methodology for target selection, data processing, and light-curve
fitting as we did in our Year 1 study. Out of the 15 transiting
systems selected for analysis, seven-HAT-P-7, KELT-1, KELT-9, KELT-16,
KELT-20, Kepler-13A, and WASP-12-show statistically significant
secondary eclipses and day-night atmospheric brightness modulations.
Small eastward dayside hot-spot offsets were measured for KELT-9b and
WASP-12b. KELT-1, Kepler-13A, and WASP-12 show additional phase-curve
variability attributed to the tidal distortion of the host star; the
amplitudes of these signals are consistent with theoretical
predictions. We combined occultation measurements from TESS and
Spitzer to compute dayside brightness temperatures, TESS-band
geometric albedos, Bond albedos, and phase integrals for several
systems. The new albedo values solidify the previously reported trend
between dayside temperature and geometric albedo for planets with 1500
K<Tday<3000K. For Kepler-13Ab, we carried out an atmospheric
retrieval of the full secondary eclipse spectrum, which revealed a
noninverted temperature-pressure profile, significant H2O and K
absorption in the near-infrared, evidence for strong optical
atmospheric opacity due to sodium, and a confirmation of the high
geometric albedo inferred from our simpler analysis. We explore the
implications of the phase integrals (ratios of Bond to geometric
albedos) for understanding exoplanet clouds. We also report updated
transit ephemerides for all of the systems studied in this work.
Description:
During the second year of the primary mission, Transiting Exoplanets
Survey Satellite (TESS) observed the northern ecliptic hemisphere,
which was divided into 13 sectors. We obtained the light-curve files
from the Mikulski Archive for Space Telescopes (MAST). The photometry
and associated data products were produced using the official Science
Processing Operations Center (SPOC) pipeline, based at the NASA Ames
Research Center.
In this paper, we presented the results from our systematic
phase-curve study of previously discovered transiting systems observed
during the second year of the TESS primary mission, consisting of TESS
sectors 14-26 from 2019 July 18 to 2020 July 4.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablea1.dat 93 137 Summary of light-curve segments
tabled1.dat 54 511 List of transit timings
refs.dat 78 63 References used for tabled1
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See also:
J/A+A/544/L12 : Velocitometry transit of KOI-13 (Santerne+, 2012)
J/AJ/144/19 : Follow-up photometry HAT-P-34 through HAT-P-37 (Bakos+, 2012)
J/ApJ/761/123 : KELT-1 photometry and spectroscopy follow-up (Siverd+, 2012)
J/A+A/549/A30 : Light curves of WASP-3b (Nascimbeni+, 2013)
J/A+A/551/A108 : Multi-site obs. of WASP-12 b transit (Maciejewski+, 2013)
J/A+A/554/A28 : Qatar-1 differential light curve (Covino+, 2013)
J/A+A/555/A92 : Transit timing variations on Qatar-1 (von Essen+, 2013)
J/AJ/145/68 : Five new transit light curves of TrES-3 (Jiang+, 2013)
J/ApJ/764/8 : APOSTLE r'-band transit lightcurves TrES-3b (Kundurthy+, 2013)
J/MNRAS/428/678 : Transiting exoplanet TrES-3b CCD UBVR phot. (Turner+, 2013)
J/ApJ/788/92 : Hot Jupiter Kepler-13Ab planet's occultation (Shporer+, 2014)
J/A+A/577/A109 : Transit times of Qatar-1b (Maciejewski+, 2015)
J/A+A/579/A136 : HAT-P-36 and WASP-11/HAT-P-10 light curves (Mancini+, 2015)
J/A+A/588/L6 : WASP-12 transit light curves (Maciejewski+ 2016)
J/A+A/600/A30 : Limb-darkening for TESS satellite (Claret, 2017)
J/AJ/154/4 : Times of transits and occultations of WASP-12b (Patra+, 2017)
J/PASP/129/F4401 : HAT-P-3b & TrES-3b light curves and Mid-times (Ricci+, 2017)
J/A+A/612/A57 : MASCARA-2 b (HD185603) light curves and spectra (Talens+, 2018)
J/AcA/68/371 : WASP and KELT planet transits (Maciejewski+, 2018)
J/A+A/628/A9 : MASCARA-2b transmission spectra (Casasayas-Barris+, 2019)
J/A+A/628/A115 : WASP-12, CoRoT-1 and TrES-3 light curves (von Essen+, 2019)
J/AJ/157/82 : TEMP V Photometry of HAT-P-9, HAT-P-32 & HAT-P-36 (Wang+, 2019)
J/AJ/157/217 : Transit times of 5 hot Jupiter WASP exoplanets (Bouma+, 2019)
J/A+A/636/A98 : WASP-18A, WASP-19, WASP-77A photometry (Cortes-Zuleta+, 2020)
J/A+A/637/A36 : WASP-121b optical phase curve (Bourrier+, 2020)
J/AJ/159/150 : Transit times of 11 hot Jupiters (Patra+, 2020)
J/AJ/160/96 : CORALIE and PFS radial velocities of HD 86226 (Teske+, 2020)
J/AJ/160/155 : Light curve segments of 22 host stars with TESS (Wong+, 2020)
J/AJ/160/209 : K2 & TESS Synergy I. Parameters &LC, 4stars (Ikwut-Ukwa+, 2020)
J/ApJ/888/L5 : Transits, occultation times and RVs of WASP-12b (Yee+, 2020)
J/A+A/648/A71 : TESS optical phase curve of KELT-1b (von Essen+, 2021)
J/AJ/161/72 : 180 Transit and occultation times for WASP-12b (Turner+, 2021)
Byte-by-byte Description of file: tablea1.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 10 A10 --- Target Target name (1)
12- 17 A6 --- Segment Segment identifier (2)
19- 22 I4 --- nRaw [989/9042] Number of data points (3)
24- 27 I4 --- nTrim [945/8803]? Number of data points (3)
29- 36 F8.3 --- BJDs [683/1030] Barycentric Julian Date of segment
start time ; BJD-2458000
38- 45 F8.3 --- BJDe [687/1036] Barycentric Julian Date of segment end
time ; BJD-2458000
47- 47 I1 --- Order [0/7]? Order of the polynomial systematics
detrending model
49- 93 A45 --- Comments Additional comments
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Note (1): Transits were removed from the KELT-9 light-curve segments prior
to fitting. The analysis of TrES-3 used the simple aperture
photometry (SAP) light curve.
Note (2): The numbers indicate the TESS sector, spacecraft orbit (two
per sector), and segment number, respectively.
Note (3): Before and after removing flagged points, outliers, and flux ramps.
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Byte-by-byte Description of file: tabled1.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 A8 --- Target Target name
10- 22 F13.5 d T0 [2454143/2459051] Barycentric Julian Date of
minimum; TDB
24- 30 F7.5 d e_T0 [6e-5/0.002] Uncertainty in T0
32- 36 I5 --- Epoch [-2154/2616] Epoch number
38- 48 A11 --- LCref Light curve reference
50- 54 A5 --- Tref Timing reference ADS bibcode
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 5 A5 --- Ref Reference code
7- 29 A23 --- Autor Main autor
31- 49 A19 --- BIB BIBcode
51- 66 A16 --- Cat. Vizier catalog
68- 78 A11 --- Note Additional note or comment
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History:
From electronic version of the journal
(End) Prepared by [AAS], Coralie Fix [CDS], 19-Jan-2022