J/A+A/667/A127 Photometric timeseries and transit times (Maciejewski+, 2022)
Planet-star interactions with precise transit timing.
III. Entering the regime of dynamical tides.
Maciejewski G., Fernandez M., Sota A., Amado P.J., Dimitrov D., Nikolov Y.,
Ohlert J., Mugrauer M., Bischoff R., Heyne T., Hildebrandt F.,
Stenglein W., Arevalo A.A., Neira S., Riesco L.A., Sanchez Martinez V.,
Verdugo M.M.
<Astron. Astrophys. 667, A127 (2022)>
=2022A&A...667A.127M 2022A&A...667A.127M (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple ; Exoplanets ; Photometry, CCD
Keywords: planet-star interactions -
planets and satellites: dynamical evolution and stability -
methods: observational - techniques: photometric
Abstract:
Hot Jupiters on extremely short-period orbits are expected to be
unstable to tidal dissipation and spiral toward their host stars. That
is because they transfer the angular momentum of the orbital motion
through tidal dissipation into the stellar interior. Although the
magnitude of this phenomenon is related to the physical properties of
a specific star-planet system, statistical studies show that tidal
dissipation might shape the architecture of hot Jupiter systems during
the stellar lifetime on the main sequence. The efficiency of tidal
dissipation remains poorly constrained in star-planet systems. Stellar
interior models show that the dissipation of dynamical tides in
radiation zones could be the dominant mechanism driving planetary
orbital decay. These theoretical predictions can be verified with the
transit timing method. We acquired new precise transit mid-times for
five planets. They were previously identified as the best candidates
for which orbital decay might be detected. Analysis of the timing data
allowed us to place tighter constraints on the orbital decay rate. No
statistically significant changes in their orbital periods were
detected for all five hot Jupiters in systems HAT-P-23, KELT-1,
KELT-16, WASP-18, and WASP-103. For planets HAT-P-23 b, WASP-18 b, and
WASP-103 b, observations show that the mechanism of the dynamical
tides dissipation probably does not operate in their host stars,
preventing them from rapid orbital decay. This finding aligns with the
models of stellar interiors of F-type stars, in which dynamical tides
are not fully damped due to convective cores. For KELT-16 b, the span
of transit timing data was not long enough to verify the theoretical
predictions. KELT-1 b was identified as a potential laboratory for
studying the dissipative tidal interactions of inertial waves in a
convective layer. Continued observations of those two planets may
provide further empirical verification of the tidal dissipation
theory.
Description:
We provide the photometric time series for transits of HAT-P-23 b,
KELT-1 b, KELT-16 b, and WASP-103 b acquired with the ground-based
telescopes: the 2.0m Ritchey-Chretien-Coude telescope (Rozhen) at the
National Astronomical Observatory Rozhen (Bulgaria), the 1.5m
Ritchey-Chretien telescope (OSN150) at the Sierra Nevada Observatory
(OSN, Spain), the 1.2m Trebur one-meter telescope (Trebur) at the
Michael Adrian Observatory in Trebur (Germany), the 0.9m
Ritchey-Chretien telescope (OSN90) at OSN, the 0.9/0.6m Schmidt
Teleskop Kamera (Jena) at the University Observatory Jena (Germany),
the 0.6m Cassegrain photometric telescope (Torun) at the Institute of
Astronomy of the Nicolaus Copernicus University in Torun (Poland). The
data were collected from 2019-2021. The details on observations and
data processing are given in the source paper. We also provide the new
mid-transit times determined from our ground-based light curves and
from TESS photometric time series. The re-determined mid-transit times
from literature data are also given. For more details, see the source
paper.
Objects:
-------------------------------------------------------------------
RA (2000) DE Designation(s)
-------------------------------------------------------------------
20 24 29.72 +16 45 43.8 HAT-P-23 = TYC 1632-1396-1
00 01 26.92 +39 23 01.7 KELT-1 = TYC 2785-2130-1
20 57 04.44 +31 39 39.6 KELT-16 = TYC 2688-1839-1
01 37 25.03 -45 40 40.4 WASP-18 = HD 10069
16 37 15.58 +07 11 00.1 WASP-103 = 2MASS J16371556+0711000
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File Summary:
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FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
targets.dat 64 5 Target list
lc.dat 51 13862 New ground-based transit light curves
tablea2.dat 54 174 New transit times
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See also:
J/AcA/68/371 : WASP and KELT planet transits (Maciejewski+, 2018)
J/AcA/70/1 : WASP-18 Photometric timeseries and timing data
(Maciejewski+, 2020)
Byte-by-byte Description of file: targets.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 A8 --- Target Target name
12- 13 I2 h RAh Right ascension (J2000)
15- 16 I2 min RAm Right ascension (J2000)
18- 22 F5.2 s RAs Right ascension (J2000)
24 A1 --- DE- Declination sign (J2000)
25- 26 I2 deg DEd Declination (J2000)
28- 29 I2 arcmin DEm Declination (J2000)
31- 34 F4.1 arcsec DEs Declination (J2000)
36- 46 F11.9 d Porb Orbital period from linear ephemerides
from table A3
48- 58 F11.9 d e_Porb Error on orbital period from linear
ephemerides from table A3
60- 61 A2 --- LC [lc ] indicates light curve data in
lc.dat file
63- 64 A2 --- A2 [A2] indicates new transit times in
tablea2.dat file
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Byte-by-byte Description of file: lc.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 A8 --- Target Target name
10- 20 F11.6 d BJD Barycentric Julian date in Barycentric
Dynamical Time (BJD_TDB-2450000)
22- 29 F8.6 --- Flux Normalized flux
31- 38 F8.6 --- e_Flux Flux error
40- 45 A6 --- TelCode Telescope code
47- 51 A5 --- Filt [R clear] Filter name
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Byte-by-byte Description of file: tablea2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 9 A9 --- Target Target name
11- 24 F14.6 d Tmid Mid-transit time in Barycentric Julian date
in Barycentric Dynamical Time (BJD_TDB)
26- 33 F8.6 d E_Tmid Positive mid-transit time error
35- 42 F8.6 d e_Tmid Negative mid-transit time error
44- 54 A11 --- lcCode Light curve source (1)
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Note (1): Light curve source as follows:
Jena = 0.9/0.6m Schmidt Teleskop Kamera at the
University Observatory Jena (Germany)
OSN150 = 1.5m Ritchey-Chretien telescope at the
Sierra Nevada Observatory (spain)
OSN90 = 0.9m Ritchey-Chretien telescop at the
Sierra Nevada Observatory (spain)
Rozhen = 2.0m Ritchey-Chretien-Coude telescope at the
National Astronomical Observatory Rozhen (Bulgaria)
Torun = 0.6m Cassegrain photometric telescope at the Institute of
Astronomy of the Nicolaus Copernicus University in Torun
(Poland)
Trebur = 1.2m Trebur one-meter telescope at the
Michael Adrian Observatory in Trebur (Germany)
Barros+2022 = Barros et al., 2022A&A...657A..52B 2022A&A...657A..52B, Cat. J/A+A/657/A52
Mancini2022 = Mancini et al., 2022MNRAS.509.1447M 2022MNRAS.509.1447M, Cat. J/MNRAS/509/1447
TESS = TESS satelitte
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Acknowledgements:
Gracjan Maciejewski, gmac(at)umk.pl
Institute of Astronomy, Nicolaus Copernicus University, Poland
References:
Maciejewski et al., Paper I 2018AcA....68..371M 2018AcA....68..371M, Cat. J/AcA/68/371
Maciejewski et al., Paper II 2020AcA....70....1M 2020AcA....70....1M, Cat. J/AcA/70/1
(End) Gracjan Maciejewski [Copernicus Univ.], Patricia Vannier [CDS] 23-Sep-2022