Follow-up light curves of the host star TOI-3235 Virtual Observatory Resource

Authors
  1. Hobson M.J.
  2. Jordan A.
  3. Bryant E.M.
  4. Brahm R.
  5. Bayliss D.
  6. Hartman J.D.,Bakos G.A.
  7. Henning T.
  8. Almenara J.M.
  9. Barkaoui K.
  10. Benkhaldoun Z.,Bonfils X.
  11. Bouchy F.
  12. Charbonneau D.
  13. Cointepas M.
  14. Collins K.A.,Eastman J.D.
  15. Ghachoui M.
  16. Gillon M.
  17. Goeke R.F.
  18. Horne K.
  19. Irwin J.M.,Jehin E.
  20. Jenkins J.M.
  21. Latham D.W.
  22. Moldovan D.
  23. Murgas F.,Pozuelos F.J.
  24. Ricker G.R.
  25. Schwarz R.P.
  26. Seager S.
  27. Srdoc G.,Striegel S.
  28. Timmermans M.
  29. Vanderburg A.
  30. Vanderspek R.
  31. Winn J.N.
  32. Published by
    CDS
Abstract

We present the discovery of TOI-3235 b, a short-period Jupiter orbiting an M dwarf with a stellar mass close to the critical mass at which stars transition from partially to fully convective. TOI-3235 b was first identified as a candidate from TESS photometry and confirmed with radial velocities from ESPRESSO and ground-based photometry from HATSouth, MEarth-South, TRAPPIST-South, LCOGT, and ExTrA. We find that the planet has a mass of 0.665+/-0.025M_J_ and a radius of 1.017+/-0.044R_J_. It orbits close to its host star, with an orbital period of 2.5926 days but has an equilibrium temperature of ~604K, well below the expected threshold for radius inflation of hot Jupiters. The host star has a mass of 0.3939+/-0.0030M_{sun}_, a radius of 0.3697+/-0.0018R_{sun}_, an effective temperature of 3389K, and a J-band magnitude of 11.706+/-0.025. Current planet formation models do not predict the existence of gas giants such as TOI-3235 b around such low-mass stars. With a high transmission spectroscopy metric, TOI-3235 b is one of the best-suited giants orbiting M dwarfs for atmospheric characterization.

Keywords
  1. m-stars
  2. infrared-photometry
  3. visible-astronomy
  4. broad-band-photometry
  5. exoplanets
Bibliographic source Bibcode
2023ApJ...946L...4H
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/946/L4
IVOA Identifier IVOID
ivo://CDS.VizieR/J/ApJ/946/L4

Access

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History

2025-03-04T14:35:50Z
Resource record created
2025-03-04T13:42:12Z
Updated
2025-03-04T14:35:50Z
Created

Contact

Name
CDS support team
Postal Address
CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France
E-Mail
cds-question@unistra.fr