J/A+A/689/A52 TOI-1130 CHEOPS observations (Borsato+, 2024)
Characterisation of the warm Jupiter TOI-1130 system with CHEOPS and a
photo-dynamical approach.
Borsato L., Degen D., Leleu A., Hooton M.J., Egger J.A., Bekkelien A.,
Brandeker A., Collier Cameron A., Guenther M.N., Nascimbeni V.,
Persson C.M., Bonfanti A., Wilson T.G., Correia A.C.M., Zingales T.,
Guillot T., Triaud A.H.M.J., Piotto G., Gandolfi D., Abe L., Alibert Y.,
Alonso R., Barczy T., Barrado Navascues D., Barros S.C.C., Baumjohann W.,
Beck T., Bendjoya P., Benz W., Billot N., Broeg C., Busch M.-D.,
Csizmadia Sz., Cubillos P.E., Davies M.B., Deleuil M., Deline A., Delrez L.,
Demangeon O.D.S., Demory B.-O., Derekas A., Edwards B., Ehrenreich D.,
Erikson A., Fortier A., Fossati L., Fridlund M., Gazeas K., Gillon M.,
Guedel M., Heitzmann A., Helling C., Hoyer S., Isaak K.G., Kiss L.L.,
Korth J., Lam K.W.F., Laskar J., Lecavelier des Etangs A., Lendl M.,
Magrin D., Marafatto L., Maxted P.F.L., Mecina M., Mekarnia D.,
Mordasini C., Mura D., Olofsson G., Ottensamer R., Pagano I., Palle E.,
Peter G., Pollacco D., Queloz D., Ragazzoni R., Rando N., Ratti F.,
Rauer H., Ribas I., Salmon S., Santos N.C., Scandariato G., Segransan D.,
Simon A.E., Smith A.M.S., Sousa S.G., Stalport M., Suarez O., Sulis S.,
Szabo Gy.M., Udry S., Van Grootel V., Venturini J., Villaver E.,
Walton N.A., Wolter D.
<Astron. Astrophys. 689, A52 (2024)>
=2024A&A...689A..52B 2024A&A...689A..52B (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple ; Exoplanets ; Photometry ; Optical
Keywords: methods: data analysis - methods: observational -
techniques: photometric - telescopes - planetary systems
Abstract:
Among the thousands of exoplanets discovered to date, approximately a
few hundred gas giants on short-period orbits are classified as
"lonely" and only a few are in a multi-planet system with a smaller
companion on a close orbit. The processes that formed multi-planet
systems hosting gas giants on close orbits are poorly understood, and
only a few examples of this kind of system have been observed and well
characterised. Within the contest of multi-planet system hosting
gas-giant on short orbits, we characterise TOI-1130 system by
measuring masses and orbital parameters. This is a 2-transiting planet
system with a Jupiter-like planet (c) on a 8.35 days orbit and a
Neptune-like planet (b) on an inner (4.07 days) orbit. Both planets
show strong anti-correlated transit timing variations (TTVs).
Furthermore, radial velocity (RV) analysis showed an additional linear
trend, a possible hint of a non-transiting candidate planet on a far
outer orbit. Since 2019, extensive transit and radial velocity
observations of the TOI-1130 have been acquired using TESS and various
ground-based facilities. We present a new photo-dynamical analysis of
all available transit and RV data, with the addition of new CHEOPS and
ASTEP+ data that achieve the best precision to date on the planetary
radii and masses and on the timings of each transit. We were able to
model interior structure of planet b constraining the presence of a
gaseous envelope of H/He, while it was not possible to assess the
possible water content. Furthermore, we analysed the resonant state of
the two transiting planets, and we found that they lie just outside
the resonant region. This could be the result of the tidal evolution
that the system underwent. We obtained both masses of the planets with
a precision less than 1.5%, and radii with a precision of about 1% and
3% for planet b and c, respectively.
Description:
Ground- and space-based observed transit times; TESS, CHEOPS, and
ASTEP+ photometry; predicted transit times.
Objects:
---------------------------------------------------
RA (2000) DE Designation(s)
---------------------------------------------------
19 05 30.22 -41 26 15.0 TOI-1130 = TIC 254113311
---------------------------------------------------
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
tablee1.dat 69 39 TOI-1130 b transit times
tablee2.dat 69 31 TOI-1130 c transit times
tablee3.dat 138 4468 TOI-1130 CHEOPS-PIPE photometry
tablee4.dat 40 18952 TOI-1130 TESS photometry - selected transits
tablee5.dat 99 5655 TOI-1130 ASTEP+ photometry
tablee6.dat 41 533 TOI-1130 transit times predictions from
2024 to 2028
--------------------------------------------------------------------------------
See also:
J/A+A/675/A115 : TOI-1130 radial velocities (Korth+, 2023)
Byte-by-byte Description of file: tablee1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 5 I5 --- Epoch Transit number w.r.t. linear ephemeris,
Tref= 2392.81470 Pref = 4.07867
7- 16 F10.5 d T0s Observed transit Time TDB (BJD-2457000)
18- 25 F8.5 d e_T0s Uncertainty on transit time
27- 36 F10.5 d T0sMAP Transit time from MAP best-fit solution
38- 69 A32 --- Source Source
--------------------------------------------------------------------------------
Byte-by-byte Description of file: tablee2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 5 I5 --- Epoch Transit number w.r.t. linear ephemeris,
Tref= 2392.66995 Pref = 8.34956
7- 16 F10.5 d T0s Observed transit time TDB (BJD-2457000)
18- 25 F8.5 d e_T0s Uncertainty on transit time
27- 36 F10.5 d T0sMAP Transit time from MAP best-fit solution
38- 69 A32 --- Source Source
--------------------------------------------------------------------------------
Byte-by-byte Description of file: tablee3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 10 F10.5 d Time Observation date TDB (BJD-2457000)
12- 20 F9.6 e- FluxRawNorm Raw flux
22- 30 F9.6 e- e_FluxRawNorm Uncertainty on raw flux
32- 41 F10.5 e-/pix bg Background
43- 52 F10.5 deg RollAngle Roll Angle
54- 63 F10.5 pix Xc Centroid X coordinate
65- 74 F10.5 pix Yc Centroid Y coordinate
76- 85 F10.5 --- deltaT DeltaTemperature of sensor thermFront_2,
see pycheops documentation
87- 95 F9.6 --- FluxDet Detrended flux (pre-detrending and
photo-dynamical detrending applied with
scaled diagnostics ad described in
pycheops)
97-105 F9.6 --- e_FluxDet Detrended flux error
107-138 A32 --- FileKey CHEOPS file_key identified
--------------------------------------------------------------------------------
Byte-by-byte Description of file: tablee4.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 10 F10.5 d Time Observation date TDB (BJD-2457000)
12- 20 F9.6 --- Flux Normalised flux
22- 30 F9.6 --- e_Flux Uncertainty on normalised flux
32- 34 I3 --- TransitNum Transit number
36- 40 A5 --- Sector TESS Sector
--------------------------------------------------------------------------------
Byte-by-byte Description of file: tablee5.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 10 F10.5 d Time Observation date TDB (BJD-2457000)
12- 20 F9.6 --- FluxNorm Normalised flux
22- 30 F9.6 --- e_FluxNorm Uncertainty on normalised flux
32- 40 F9.6 pix dx X-offset
42- 50 F9.6 pix dy Y-offset
52- 60 F9.6 pix FWHM FWHM
62- 75 F14.6 --- Sky Sky (in adu units)
77- 85 F9.6 --- FluxDet Normalised flux detrended (detrending applied
to the standardised dx, dy, FWHM, Sky)
87- 96 A10 --- Source Source
98- 99 I2 --- TransitNum [1/5] Transit number
--------------------------------------------------------------------------------
Byte-by-byte Description of file: tablee6.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 11 F11.6 d Time Observation date TDB (BJD-2457000)
13- 20 F8.5 d 1sigma ±1 sigma propagated uncertainty
22- 29 F8.5 d 2sigma ±2 sigma propagated uncertainty
31- 38 F8.5 d 3sigma ±3 sigma propagated uncertainty
40- 41 A2 --- Planet Planet identifier
--------------------------------------------------------------------------------
Acknowledgements:
Luca Borsato, luca.borsato(at)inaf.it
(End) Luca Borsato [INAF-OAPD, Italy], Patricia Vannier [CDS] 11-Jul-2024