PLATOSpec's first results: Three new transiting warm Jupiters from the WINE survey TIC 147027702, TIC 245076932 and TIC 87422071
Pith reviewed 2026-05-15 20:09 UTC · model grok-4.3
The pith
Three new warm Jupiters were discovered and fully characterized from TESS full-frame images plus ground follow-up.
A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.
Core claim
The central claim is the discovery of TIC 147027702b (44.4 d, 1.09 M_J, 0.98 R_J, e=0.13), TIC 245076932b (21.6 d, 0.51 M_J, 0.97 R_J, e=0.43), and TIC 87422071b (11.3 d, 1.29 M_J, 0.97 R_J, e=0.12). All three were initially identified as transit candidates in TESS full-frame images and then validated with radial velocities from FEROS and PLATOSpec together with ground-based photometry from multiple telescopes; global modeling of the combined data set yields the reported planetary parameters.
What carries the argument
The global fit that simultaneously models TESS and ground-based light curves with radial-velocity time series to extract planetary mass, radius, period, and eccentricity.
If this is right
- These three systems increase the number of warm Jupiters with measured masses, radii, and eccentricities available for population studies.
- The moderate eccentricity of 0.43 in one planet supplies a direct datum for models of migration and tidal circularization timescales.
- The well-determined radii near 1 R_J for all three planets allow direct comparison with interior-structure calculations that include irradiation and heavy-element enrichment.
- The detections demonstrate that TESS full-frame images combined with modest-aperture spectroscopy can efficiently find and confirm warm Jupiters.
Where Pith is reading between the lines
- Longer-term monitoring of these systems could search for additional planets or measure spin-orbit angles to test migration pathways.
- Placing the three planets on a mass-period-eccentricity diagram alongside known warm Jupiters may reveal whether eccentricity correlates with orbital distance in this regime.
- The reported parameters can be used as anchor points for numerical simulations of how these planets would evolve under continued tidal interaction.
Load-bearing premise
The observed brightness dips and velocity changes are produced by planets rather than by stellar activity, pulsations, or false-positive configurations.
What would settle it
A radial-velocity data set showing no periodic signal at the photometric period, or a higher-precision light curve in which the transit depth becomes inconsistent with a planetary radius, would falsify the planetary interpretation.
Figures
read the original 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 1.52 m 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 ($e = 0.13 \pm 0.05$) with a period of 44.4 days and has a mass of $1.09^{+0.07}_{-0.13}$ M$_J$ and a radius of $0.98 \pm 0.06$ R$_J$. TIC 245076932b has a moderately low mass of $0.51 \pm 0.05$ M$_J$, a radius of $0.97 \pm 0.05$ R$_J$, and an eccentric orbit ($e = 0.43 \pm 0.02$) with a period of 21.6 days. TIC 87422071b has a mass of $1.29 \pm 0.10$ M$_J$, a radius of $0.97 \pm 0.08$ R$_J$, and has a slightly eccentric orbit ($e = 0.12 \pm 0.07$) 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.
Editorial analysis
A structured set of objections, weighed in public.
Referee Report
Summary. The manuscript reports the discovery and characterization of three transiting warm Jupiters—TIC 147027702b (P=44.4 d, M=1.09 M_J, R=0.98 R_J, e=0.13), TIC 245076932b (P=21.6 d, M=0.51 M_J, R=0.97 R_J, e=0.43), and TIC 87422071b (P=11.3 d, M=1.29 M_J, R=0.97 R_J, e=0.12)—initially identified in TESS full-frame images and confirmed through ground-based photometry (Observatoire Moana, LCOGT, ASTEP) and radial-velocity observations with FEROS and the new PLATOSpec spectrograph on the ESO 1.52 m telescope. Global fits to the combined photometry and RVs yield the reported masses, radii, and eccentricities.
Significance. If the parameters hold, the work expands the small sample of well-characterized warm Jupiters available for testing giant-planet formation, migration, and tidal-evolution models. The multi-telescope confirmation and first results from PLATOSpec constitute a concrete observational contribution; the reported eccentricities (particularly the moderate value for TIC 245076932b) provide useful benchmarks for tidal circularization studies.
minor comments (4)
- The abstract and §4 (global modeling) should explicitly state the data-exclusion criteria and whether any photometric or RV points were omitted, as these choices directly affect the quoted uncertainties on mass and eccentricity.
- Figure 3 (phase-folded light curves) and Figure 5 (RV curves) would benefit from over-plotting the best-fit model residuals in a separate panel to allow immediate visual assessment of fit quality.
- Table 2 (system parameters) lists asymmetric uncertainties for mass but symmetric ones for radius; clarify whether this reflects the posterior shape or a reporting choice.
- The description of PLATOSpec in §2.2 should include a brief statement of its resolving power and wavelength coverage to facilitate comparison with FEROS.
Simulated Author's Rebuttal
We thank the referee for their supportive review and recommendation of minor revision. The report correctly notes the value of these three new warm Jupiters for testing formation and migration models, as well as the first results from PLATOSpec. No major comments were provided in the report.
Circularity Check
No significant circularity in observational discovery paper
full rationale
This is a standard exoplanet discovery and characterization paper. The central claims (planet detections and fitted parameters for periods, masses, radii, eccentricities) are obtained from global modeling of TESS full-frame image light curves plus independent ground-based photometry and radial velocities from FEROS and PLATOSpec. No derivation chain reduces any reported quantity to a fitted input by construction, no self-citation is load-bearing for the existence or parameters of the planets, and all steps rely on external data and standard Keplerian fitting rather than internal redefinition or ansatz smuggling. The paper is self-contained against external benchmarks.
Axiom & Free-Parameter Ledger
free parameters (1)
- orbital period, eccentricity, mass, radius for each planet
axioms (1)
- domain assumption Signals are produced by planets on Keplerian orbits
Reference graph
Works this paper leans on
-
[1]
2021, A&A, 647, A53 Acuña, L., Kreidberg, L., Zhai, M., & Mollière, P
Acuña, L., Deleuil, M., Mousis, O., et al. 2021, A&A, 647, A53 Acuña, L., Kreidberg, L., Zhai, M., & Mollière, P. 2024, A&A, 688, A60 Acuña, L., Kreidberg, L., Zhai, M., Mollière, P., & Fouesneau, M. 2025, The Journal of Open Source Software, 10, 7288
work page 2021
-
[2]
Aller, A., Lillo-Box, J., Jones, D., Miranda, L. F., & Barceló Forteza, S. 2020, A&A, 635, A128
work page 2020
-
[3]
Ambikasaran, S., Foreman-Mackey, D., Greengard, L., Hogg, D. W., & O’Neil, M. 2015, IEEE Transactions on Pattern Analysis and Machine Intelligence, 38, 252 Article number, page 12 of 19 Gajdoš et al.: Three new transiting warm Jupiters 100 101 102 Period (days) 0.0 0.2 0.4 0.6 0.8 1.0Eccentricity 10 MJ 1 MJ TIC147027702 TIC245076932 TIC87422071 Fig. 14.Pe...
work page 2015
-
[4]
Barat, S., Désert, J.-M., Mukherjee, S., et al. 2025, AJ, 170, 165
work page 2025
- [5]
-
[6]
2025, arXiv e-prints, arXiv:2511.15835
Bello-Arufe, A., Hu, R., Zilinskas, M., et al. 2025, arXiv e-prints, arXiv:2511.15835
- [7]
- [8]
-
[9]
Bressan, A., Marigo, P., Girardi, L., et al. 2012, MNRAS, 427, 127
work page 2012
-
[10]
Brown, T. M., Baliber, N., Bianco, F. B., et al. 2013, PASP, 125, 1031
work page 2013
-
[11]
J., Ohno, K., Thorngren, D., & Murray-Clay, R
Chachan, Y ., Fortney, J. J., Ohno, K., Thorngren, D., & Murray-Clay, R. 2025, ApJ, 994, 43
work page 2025
-
[12]
Collins, K. A., Kielkopf, J. F., Stassun, K. G., & Hessman, F. V . 2017, AJ, 153, 77
work page 2017
- [13]
- [14]
- [15]
-
[16]
Doyon, R., Willott, C. J., Hutchings, J. B., et al. 2023, PASP, 135, 098001
work page 2023
-
[17]
Dransfield, G., Mékarnia, D., Triaud, A. H. M. J., et al. 2022, in Society of Photo- Optical Instrumentation Engineers (SPIE) Conference Series, V ol. 12186, Ob- servatory Operations: Strategies, Processes, and Systems IX, ed. D. S. Adler, R. L. Seaman, & C. R. Benn, 121861F
work page 2022
-
[18]
Eberhardt, J., Hobson, M. J., Henning, T., et al. 2023, AJ, 166, 271
work page 2023
- [19]
-
[20]
Espinoza, N., Kossakowski, D., & Brahm, R. 2019, MNRAS, 490, 2262
work page 2019
-
[21]
I., Jordán, A., Brahm, R., et al
Espinoza-Retamal, J. I., Jordán, A., Brahm, R., et al. 2025, AJ, 170, 70
work page 2025
-
[22]
Feinstein, A. D., Booth, R. A., Bergner, J. B., et al. 2025, arXiv e-prints, arXiv:2506.00669
-
[23]
Foreman-Mackey, D., Agol, E., Ambikasaran, S., & Angus, R. 2017, AJ, 154, 220
work page 2017
-
[24]
Foreman-Mackey, D., Hogg, D. W., Lang, D., & Goodman, J. 2013, PASP, 125, 306
work page 2013
-
[25]
Fulton, B. J., Petigura, E. A., Blunt, S., & Sinukoff, E. 2018, PASP, 130, 044504 Gaia Collaboration. 2023, A&A, 674, A1
work page 2018
-
[26]
J., Trifonov, T., Henning, T., et al
Hobson, M. J., Trifonov, T., Henning, T., et al. 2023, AJ, 166, 201
work page 2023
-
[27]
X., Vanderburg, A., Pál, A., et al
Huang, C. X., Vanderburg, A., Pál, A., et al. 2020, Research Notes of the Amer- ican Astronomical Society, 4, 204
work page 2020
-
[28]
Hubbard, W. B. & Marley, M. S. 1989, Icarus, 78, 102
work page 1989
-
[29]
I., Reinarz, Y ., Brahm, R., et al
Jones, M. I., Reinarz, Y ., Brahm, R., et al. 2024, A&A, 683, A192 Jordán, A., Brahm, R., Espinoza, N., et al. 2020, AJ, 159, 145 Kabáth, P., Skarka, M., Hatzes, A., et al. 2026, MNRAS, 545, staf1972
work page 2024
-
[30]
Kaufer, A., Stahl, O., Tubbesing, S., et al. 1999, The Messenger, 95, 8
work page 1999
-
[31]
Kempton, E. M.-R., Bean, J. L., Louie, D. R., et al. 2018, PASP, 130, 114401
work page 2018
- [32]
- [33]
-
[34]
Leconte, J., Chabrier, G., Baraffe, I., & Levrard, B. 2010, A&A, 516, A64
work page 2010
-
[35]
McCully, C., V olgenau, N. H., Harbeck, D.-R., et al. 2018, in Society of Photo- Optical Instrumentation Engineers (SPIE) Conference Series, V ol. 10707, Proc. SPIE, 107070K Mékarnia, D., Guillot, T., Rivet, J. P., et al. 2016, MNRAS, 463, 45
work page 2018
- [36]
-
[37]
2020, ApJ, 897, 7 Mollière, P., van Boekel, R., Bouwman, J., et al
Millholland, S., Petigura, E., & Batygin, K. 2020, ApJ, 897, 7 Mollière, P., van Boekel, R., Bouwman, J., et al. 2017, A&A, 600, A10 Mollière, P., van Boekel, R., Dullemond, C., Henning, T., & Mordasini, C. 2015, ApJ, 813, 47
work page 2020
-
[38]
Paegert, M., Stassun, K. G., Collins, K. A., et al. 2021, arXiv e-prints, arXiv:2108.04778
-
[39]
2025, Experimental Astronomy, 59, 29
Palle, E., Biazzo, K., Bolmont, E., et al. 2025, Experimental Astronomy, 59, 29
work page 2025
- [40]
- [41]
- [42]
-
[43]
B., Hubickyj, O., Bodenheimer, P., et al
Pollack, J. B., Hubickyj, O., Bodenheimer, P., et al. 1996, Icarus, 124, 62
work page 1996
-
[44]
Rafikov, R. R. 2005, ApJ, 621, L69
work page 2005
-
[45]
Ricker, G. R., Winn, J. N., Vanderspek, R., et al. 2015, Journal of Astronomical
work page 2015
-
[46]
Telescopes, Instruments, and Systems, 1, 014003 Rodríguez Martínez, R., Eastman, J. D., Collins, K. A., et al. 2025, AJ, 169, 72
work page 2025
-
[47]
Salinas, H., Brahm, R., Olmschenk, G., et al. 2025, MNRAS, 538, 2031
work page 2025
-
[48]
Santerne, A., Moutou, C., Tsantaki, M., et al. 2016, A&A, 587, A64
work page 2016
-
[49]
Schlecker, M., Kossakowski, D., Brahm, R., et al. 2020, AJ, 160, 275
work page 2020
-
[50]
Schlichting, H. E. 2014, ApJ, 795, L15
work page 2014
-
[51]
2022, in Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, V ol
Schmider, F.-X., Abe, L., Agabi, A., et al. 2022, in Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, V ol. 12182, Ground- based and Airborne Telescopes IX, ed. H. K. Marshall, J. Spyromilio, & T. Usuda, 121822O
work page 2022
-
[52]
K., Rustamkulov, Z., Thorngren, D
Sing, D. K., Rustamkulov, Z., Thorngren, D. P., et al. 2024, Nature, 630, 831 Tala Pinto, M., Jordán, A., Acuña, L., et al. 2025, A&A, 694, A268
work page 2024
-
[53]
R., Huber, D., & van Saders, J
Tayar, J., Claytor, Z. R., Huber, D., & van Saders, J. 2022, ApJ, 927, 31
work page 2022
-
[54]
Thorngren, D. P., Fortney, J. J., Murray-Clay, R. A., & Lopez, E. D. 2016, ApJ, 831, 64
work page 2016
- [55]
-
[56]
J., Morbidelli, A., Raymond, S
Walsh, K. J., Morbidelli, A., Raymond, S. N., O’Brien, D. P., & Mandell, A. M. 2011, Nature, 475, 206
work page 2011
-
[57]
Welbanks, L., Bell, T. J., Beatty, T. G., et al. 2024, Nature, 630, 836
work page 2024
- [58]
-
[59]
Zak, J., Kabath, P., Boffin, H. M. J., et al. 2025b, A&A, 702, A266 Article number, page 13 of 19 A&A proofs:manuscript no. paper Appendix A: Radial velocity observations Table A.1.Radial-velocity data of TIC 147027702. Time RV RV error SNR (BJD) (m/s) (m/s) 2460686.7921940 22707.0 36.6 28 2460695.8248905 22678.4 24.0 45 2460695.8400650 22724.9 21.1 52 24...
discussion (0)
Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.