In-transit sp. and phot. obs. of TOI-2076b Virtual Observatory Resource

Authors
  1. Frazier R.C.
  2. Stefansson G.
  3. Mahadevan S.
  4. Yee S.W.
  5. Canas C.I.,Winn J.N.
  6. Luhn J.
  7. Dai F.
  8. Doyle L.
  9. Cegla H.
  10. Kanodia S.
  11. Robertson P.,Wisniewski J.
  12. Bender C.F.
  13. Dong J.
  14. Gupta A.F.
  15. Halverson S.
  16. Hawley S.,Hebb L.
  17. Holcomb R.
  18. Kowalski A.
  19. Libby-Roberts J.
  20. Lin A.S.J.,McElwain M.W.
  21. Ninan J.P.
  22. Petrovich C.
  23. Roy A.
  24. Schwab C.
  25. Terrien R.C.,Wright J.T.
  26. Published by
    CDS
Abstract

TOI-2076 b is a sub-Neptune-sized planet (R=2.39+/-0.10R_{Earth}_) that transits a young (204+/-50MYr) bright (V=9.2) K-dwarf hosting a system of three transiting planets. Using spectroscopic observations obtained with the NEID spectrograph on the WIYN 3.5m Telescope, we model the Rossiter-McLaughlin effect of TOI-2076 b, and derive a sky-projected obliquity of {lambda}=-3_-15_^+16^{deg}. Using the size of the star (R=0.775+/-0.015R_{sun}_), and the stellar rotation period (P_rot_=7.27+/-0.23days), we estimate an obliquity of psi=18_-9_^+10^{deg} ({psi}<34{deg} at 95% confidence), demonstrating that TOI-2076 b is in a well-aligned orbit. Simultaneous diffuser-assisted photometry from the 3.5m telescope at Apache Point Observatory rules out flares during the transit. TOI-2076 b joins a small but growing sample of young planets in compact multi-planet systems with well-aligned orbits, and is the fourth planet with an age <~300Myr in a multi-transiting system with an obliquity measurement. The low obliquity of TOI-2076 b and the presence of transit timing variations in the system suggest the TOI-2076 system likely formed via convergent disk migration in an initially well-aligned disk.

Keywords
  1. exoplanets
  2. photometry
  3. visible-astronomy
  4. spectroscopy
  5. radial-velocity
Bibliographic source Bibcode
2023ApJ...944L..41F
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/944/L41
IVOA Identifier IVOID
ivo://CDS.VizieR/J/ApJ/944/L41

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History

2025-02-28T13:21:14Z
Resource record created
2025-02-28T12:43:45Z
Updated
2025-02-28T13:21:14Z
Created

Contact

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