J/A+A/693/A144 WASP-132 RV and TESS and TESS light curves (Grieves+, 2025)
Discovery of a cold giant planet and mass measurement of a hot super-Earth in
the multi-planetary system WASP-132.
Grieves N., Bouchy F., Armstrong J.D., Akinsanmi B., Psaridi A.,
Ulmer-Moll S., Frensch Y.G.C., Helled R., Muller S., Knierim H.,
Santos N.C., Adibekyan V., Parc L., Lendl M., Battley M.P., Unger N.,
Chaverot G., Bayliss D., Dumusque X., Hawthorn F., Figueira P.,
Fetzner Keniger M.A., Lillo-Box J., Dyregaard Nielsen L., Osborn A.,
Sousa S.G., Strom P., Udry S.
<Astron. Astrophys. 693, A144 (2025)>
=2025A&A...693A.144G 2025A&A...693A.144G (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple ; Exoplanets ; Photometry ; Optical ;
Radial velocities
Keywords: planets and satellites: detection -
planets and satellites: dynamical evolution and stability -
planets and satellites: fundamental parameters
Abstract:
Hot Jupiters generally do not have nearby planet companions, as they
may have cleared out other planets during their inward migration from
more distant orbits. This gives evidence that hot Jupiters more often
migrate inward via high-eccentricity migration due to dynamical
interactions between planets rather than more dynamically cool
migration mechanisms through the protoplanetary disk. Here we further
refine the unique system of WASP-132 by characterizing the mass of the
recently validated 1.0-day period super-Earth WASP-132c (TOI-822.02)
interior to the 7.1-day period hot Jupiter WASP-132b. Additionally, we
announce the discovery of a giant planet at a 5-year period (2.7 AU).
We also detect a long-term trend in the radial velocity data
indicative of another outer companion. Using over nine years of
CORALIE RVs and over two months of highly-sampled HARPS RVs, we
determine the masses of the planets from smallest to largest orbital
period to be Mc=6.26+1.84-1.83MEarth,
Mb=0.428+0.015-0.015MJup, and Mdsini=5.16+0.52-0.52MJup,
respectively. Using TESS and CHEOPS photometry data we measure the
radii of the two inner transiting planets to be
Rc=1.841+0.094-0.093REarth and Rd=0.901+0.038-0.038RJup.
We find a bulk density of rhoc=5.47+1.96-1.71g/cm3 for
WASP-132c, which is slightly above the Earth-like composition line on
the mass-radius diagram. WASP-132 is a unique multi-planetary system
in that both an inner rocky planet and an outer giant planet are in a
system with a hot Jupiter. This suggests it migrated via a more rare
dynamically cool mechanism and helps to further our understanding of
how hot Jupiter systems may form and evolve.
Description:
reduced CHEOPS photometric observations, the reduced TESS photometric
observations, the CORALIE RVs and all activity indicator data, and the
HARPS RVs and all activity indicator data of WASP-132,
Objects:
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RA (2000) DE Designation(s)
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14 30 26.18 -46 09 33.1 WASP-132 = TIC 127530399 = TOI-822
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
rv.dat 237 121 WASP-132 radial velocity data
tess.dat 89 48100 WASP-132 TESS photometry data
cheops.dat 64 967 WASP-132 CHEOPS photometry data
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Byte-by-byte Description of file: rv.dat
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Bytes Format Units Label Explanations
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1- 16 F16.8 --- BJD Barycentric Julian Date
18- 29 F12.6 m/s RV Radial velocity
31- 39 F9.6 m/s e_RV Radial velocity uncertainty
41- 51 F11.6 m/s FWHM CCF FWHM
53- 61 F9.6 m/s e_FWHM CCF FWHM uncertainty
63- 73 F11.6 m/s BIS CCF bisector velocity span
75- 84 F10.6 m/s e_BIS CCF BIS uncertainty
86- 94 F9.6 --- Contrast CCF contrast
96-100 E5.1 --- e_Contrast CCF contrast uncertainty
102-109 F8.6 --- Ha Halpha index
111-118 F8.6 --- e_Ha Halpha index uncertainty
120-127 F8.6 --- Na Na index
129-136 F8.6 --- e_Na Na index uncertainty
138-147 F10.6 --- Ca CaII index
149-157 F9.6 --- e_Ca CaII index uncertainty
159-166 F8.6 --- SMW Mt Wilson S index
168-175 F8.6 --- e_SMW Mt Wilson S index uncertainty
177-186 F10.6 m/s BERV Barycentric Earth radial velocity
188-237 A50 --- Inst Spectrograph instrument name
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Byte-by-byte Description of file: tess.dat
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Bytes Format Units Label Explanations
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1- 16 F16.8 d BJD Barycentric Julian Date
18- 27 F10.8 --- Flux Relative flux
29- 38 F10.8 --- e_Flux Relative flux uncertainty
40- 89 A50 --- Sector TESS sector
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Byte-by-byte Description of file: cheops.dat
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Bytes Format Units Label Explanations
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1- 16 F16.8 d BJD Barycentric Julian Date
18- 27 F10.8 --- Flux Relative flux
29- 38 F10.8 --- e_Flux Relative flux uncertainty
40- 49 F10.8 --- Bkg CHEOPS background flux
51- 62 F12.8 deg Roll CHEOPS roll angle
64 I1 --- Visit [1/3] WASP-132 CHEOPS visit number
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Acknowledgements:
Nolan Grieves, nolangrieves(at)gmail.com
(End) Patricia Vannier [CDS] 05-Dec-2024