J/A+A/708/A189 Three new transiting warm Jupiters RV curves (Gajdos+, 2026)
PLATOSpec's first results: Three new transiting warm Jupiters from the WINE
survey. TIC 147027702, TIC 245076932 and TIC 87422071.
Gajdos P., Brahm R., Acuna-Aguirre L., Jones M.I., Salinas H., Liptak J.,
Jordan A., Henning T., Srba J., Zdarska E., Balkoova Z., Vitkova M.,
Janik J., Skoda P., Zak J., Mekarnia D., Suarez O., Abe L., Beltrame M.,
Triaud A.H.M.J., Guillot T., Collins K.A., Barkaoui K., Boyle G., Suc V.,
Antonucci L., Tala Pinto M., Vostretcova E., Eberhardt J., Espinoza N.,
Mireles I., Pintr P., Rojas F.I., Schaffenroth V., Vanzi L., Kabath P.
<Astron. Astrophys. 708, A189 (2026)>
=2026A&A...708A.189G 2026A&A...708A.189G (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple ; Exoplanets ; Radial velocities ;
Optical
Keywords: techniques: photometric - techniques: radial velocities -
planets and satellites: detection -
planets and satellites: gaseous planets - planetary systems
Abstract:
We report the discovery and characterisation of three transiting warm
Jupiters: TIC 147027702b, TIC 245076932b and TIC 87422071b. These
systems were initially identified as transiting candidates using light
curves generated from the full-frame images of the TESS mission. We
confirmed the planetary nature of these objects with ground-based
spectroscopic follow-up observations using FEROS and the new PLATOSpec
spectrograph attached to the ESO 1.52m telescope at the La Silla
Observatory, and with ground-based photometric observations of the
Observatoire Moana, Las Cumbres Observatory Global Telescope and
ASTEP. From a global fit to the photometry and radial velocities, we
determine that the planet TIC 147027702b has a low-eccentric orbit
(e=0.13±0.05) with a period of 44.4 days and has a mass of
1.09+0.07-0.13MJ and a radius of 0.98±0.06RJ. TIC 245076932b
has a moderately low mass of 0.51±0.05MJ, a radius of
0.97±0.05RJ, and an eccentric orbit (e=0.43±0.02) with a period
of 21.6 days. TIC 87422071b has a mass of 1.29±0.10MJ, a radius of
0.97±0.08RJ, and has a slightly eccentric orbit (e=0.12±0.07)
with a period of 11.3 days. These well-characterised warm Jupiters
expand the currently limited sample of similar gas giants and provide
valuable benchmarks for testing models of giant-planet formation,
migration, and tidal evolution.
Description:
Radial velocity observations of TIC 147027702, TIC 245076932 and
TIC 87422071 using PLATOSpec and FEROS.
Objects:
-----------------------------------------
RA (2000) DE Designation(s)
-----------------------------------------
10 47 05.49 -43 55 54.5 TIC 147027702
13 12 15.24 -51 12 51.9 TIC 245076932
08 12 08.32 -44 14 35.9 TIC 87422071
-----------------------------------------
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tic147.dat 37 55 Radial-velocity data of TIC 147027702
tic245.dat 37 79 Radial-velocity data of TIC 245076932
tic874.dat 37 43 Radial-velocity data of TIC 87422071
obtained by PLATOSpec
tic874fe.dat 37 4 Radial-velocity data of TIC 87422071
obtained by FEROS
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See also:
IV/39 : TESS Input Catalog version 8.2 (TIC v8.2) (Paegert+, 2021)
Byte-by-byte Description of file: tic147.dat tic245.dat tic874.dat tic874fe.dat
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Bytes Format Units Label Explanations
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1- 15 F15.7 d BJD Barycentric Julian Date at mid exposure
18- 24 F7.1 m/s RV Estimated Radial Velocity of the star at
Solar system barycentre
29- 32 F4.1 m/s e_RV Estimated 1 sigma error bar on RV
36- 37 I2 --- SNR Signal-to-noise ratio per pixel at 550nm
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Acknowledgements:
Pavol Gajdos, pavol.gajdos(at)upjs.sk
(End) Patricia Vannier [CDS] 02-Mar-2026