CHEOPS light curves of TOI-2141 Virtual Observatory Resource

Authors

1. Luque R.
2. Lam K.W.F.
3. Cabrera J.
4. Bonfanti A.
5. Eschen Y.
6. Olofsson G.,Benz W.
7. Billot N.
8. Brandeker A.
9. Correia A.C.M.
10. Fossati L.
11. Gandolfi D.,Osborn H.P.
12. Pezzotti C.
13. Sousa S.G.
14. Wilson T.G.
15. Wolf S.
16. Alibert Y.,Alonso R.
17. Asquier J.
18. Barczy T.
19. Barrado D.
20. Barros S.C.
21. Baumjohann W.,Biondi F.
22. Borsato L.
23. Broeg C.
24. Collier Cameron A.
25. Csizmadia Sz.,Cubillos P.E.
26. Davies M.B.
27. Deleuil M.
28. Deline A.
29. Demangeon O.D.S.,Demory B.-O.
30. Derekas A.
31. Edwards B.
32. Egger J.A.
33. Ehrenreich D.
34. Erikson A.,Fortier A.
35. Fridlund M.
36. Gazeas K.
37. Gillon M.
38. Guedel M.
39. Guenther M.N.,Heitzmann A.
40. Helling C.
41. Isaak K.G.
42. Keller T.
43. Kiss L.
44. Korth J.,Laskar J.
45. Lecavelier des Etangs A.
46. Leleu A.
47. Lendl M.
48. Magrin D.,Mantovan G.
49. Maxted P.F.L.
50. Merin B.
51. Mordasini C.
52. Nascimbeni V.,Ottensamer R.
53. Pagano I.
54. Palle E.
55. Peter G.
56. Piazza D.
57. Piotto G.,Pollacco D.
58. Queloz D.
59. Ragazzoni R.
60. Rando N.
61. Rauer H.
62. Ribas I.,Santos N.C.
63. Scandariato G.
64. Segransan D.
65. Simon A.E.
66. Smith A.M.S.,Stalport M.
67. Sulis S.
68. Szabo M.Gy.
69. Udry S.
70. Ulmer B.
71. Ulmer-Moll S.,Van Grootel V.
72. Venturini J.
73. Villaver E.
74. Walton N.A.
75. Wolter D.

Published by

CDS

Abstract

We aim to refine the fundamental parameters of the TOI-2141 planetary system, which includes a transiting sub-Neptune orbiting a Sun-like star in a relatively long orbit of 18.26 days, by combining new photometric and spectroscopic observations. We analyze new space-based photometry from TESS and CHEOPS as well as 61 radial velocity measurements from HARPS-N. We perform individual and joint photometric and RV analyses using several modeling tools within a Bayesian model comparison framework. We refine the radius and mass of the transiting planet TOI-2141 b to 3.15+/-0.04R_{Earth}_ and 20.1+/-1.6M_{Earth}_, respectively, five and two times more precise than the previously reported values. Our radial velocity analysis reveals two additional non-transiting companions with orbital periods of 5.46 and 60.45 days. Despite the innermost planet's high geometric transit probability, we find no evidence for transits in the photometric data. The bulk properties of TOI-2141 b suggest a significant volatile envelope atop an Earth-like core, with modeling indicating a hydrogen-rich atmosphere that may have experienced mild photoevaporation over the system's history. Planets b and c must exhibit a modest mutual inclination of at least 2.4 degrees.

Keywords

1. multiple-stars
2. exoplanets
3. g-stars
4. photometry
5. visible-astronomy

Bibliographic source Bibcode

2025A&A...704A.174L

See also HTML

https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/704/A174

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ivo://CDS.VizieR/J/A+A/704/A174

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http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/704/A174

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