Hidden Gems in TESS: sherlock finds two new rocky planets around nearby M dwarfs
Fuente:
arXiv
Guardado en:
| Autores principales: | , , , , , , , , , , , , , , , , , , , , , , , , , , , |
|---|---|
| Formato: | Preprint |
| Publicado: |
2026
|
| Materias: | |
| Acceso en línea: | |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| _version_ | 1866916026911817728 |
|---|---|
| author | Timmermans, M. Dévora-Pajares, M. Pozuelos, F. J. Barkaoui, K. Rojas-Ayala, B. Almenara, J. M. Howell, S. B. Triaud, A. H. M. J. Gillon, M. Scott, M. G. Davis, Y. T. Rackham, B. V. Burgasser, A. J. Bonfils, X. Collins, K. A. Demory, B. -O. Dransfield, G. Ducrot, E. Fukui, A. Ghachoui, M. Chew, Y. Gómez Maqueo Jehin, E. Narita, N. Pedersen, P. P. Schwarz, R. P. Srdoc, G. Yalcinkaya, S. Way, Z. |
| author_facet | Timmermans, M. Dévora-Pajares, M. Pozuelos, F. J. Barkaoui, K. Rojas-Ayala, B. Almenara, J. M. Howell, S. B. Triaud, A. H. M. J. Gillon, M. Scott, M. G. Davis, Y. T. Rackham, B. V. Burgasser, A. J. Bonfils, X. Collins, K. A. Demory, B. -O. Dransfield, G. Ducrot, E. Fukui, A. Ghachoui, M. Chew, Y. Gómez Maqueo Jehin, E. Narita, N. Pedersen, P. P. Schwarz, R. P. Srdoc, G. Yalcinkaya, S. Way, Z. |
| contents | The Hidden Gems project searches the TESS data for additional planets transiting low-mass stars in confirmed systems. Our goal is to identify planet candidates that are below the detection threshold set by the SPOC and QLP pipelines using sherlock, a specialized pipeline for robust detection and vetting of transit signals in TESS data. We present the discovery of two inner rocky planets in the TOI-237 and TOI-4336 A systems, confirmed with ground-based photometry from the TRAPPIST, SPECULOOS, ExTrA, and LCO facilities. TOI-237 c has a radius of 1.21 +/- 0.04Re, orbits its mid-M host star every 1.74 days, and is close to a 3:1 mean-motion resonance with TOI-237 b. TOI-4336 A c has a radius of 1.17 +/- 0.06Re, and orbits with a period of 7.58 days an M3.5 host star which is part of a hierarchical triple system. We performed model comparison to search for non-zero eccentricities, and found that the circular transit models are statistically favored. Dynamical simulations show that both systems are in stable configurations, and the TTVs expected for the TOI-237 system are of the order of seconds. TOI-237 c and TOI-4336 A c join the high-interest population of warm likely super-Earths below the so-called "radius valley". In particular, TOI-237 c is a good candidate for phase curve observations with JWST/MIRI thanks to the small radius of the host star and its short period. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_21774 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Hidden Gems in TESS: sherlock finds two new rocky planets around nearby M dwarfs Timmermans, M. Dévora-Pajares, M. Pozuelos, F. J. Barkaoui, K. Rojas-Ayala, B. Almenara, J. M. Howell, S. B. Triaud, A. H. M. J. Gillon, M. Scott, M. G. Davis, Y. T. Rackham, B. V. Burgasser, A. J. Bonfils, X. Collins, K. A. Demory, B. -O. Dransfield, G. Ducrot, E. Fukui, A. Ghachoui, M. Chew, Y. Gómez Maqueo Jehin, E. Narita, N. Pedersen, P. P. Schwarz, R. P. Srdoc, G. Yalcinkaya, S. Way, Z. Earth and Planetary Astrophysics The Hidden Gems project searches the TESS data for additional planets transiting low-mass stars in confirmed systems. Our goal is to identify planet candidates that are below the detection threshold set by the SPOC and QLP pipelines using sherlock, a specialized pipeline for robust detection and vetting of transit signals in TESS data. We present the discovery of two inner rocky planets in the TOI-237 and TOI-4336 A systems, confirmed with ground-based photometry from the TRAPPIST, SPECULOOS, ExTrA, and LCO facilities. TOI-237 c has a radius of 1.21 +/- 0.04Re, orbits its mid-M host star every 1.74 days, and is close to a 3:1 mean-motion resonance with TOI-237 b. TOI-4336 A c has a radius of 1.17 +/- 0.06Re, and orbits with a period of 7.58 days an M3.5 host star which is part of a hierarchical triple system. We performed model comparison to search for non-zero eccentricities, and found that the circular transit models are statistically favored. Dynamical simulations show that both systems are in stable configurations, and the TTVs expected for the TOI-237 system are of the order of seconds. TOI-237 c and TOI-4336 A c join the high-interest population of warm likely super-Earths below the so-called "radius valley". In particular, TOI-237 c is a good candidate for phase curve observations with JWST/MIRI thanks to the small radius of the host star and its short period. |
| title | Hidden Gems in TESS: sherlock finds two new rocky planets around nearby M dwarfs |
| topic | Earth and Planetary Astrophysics |
| url | https://arxiv.org/abs/2601.21774 |