THYME. X. MELANGE-5 association cand. members Virtual Observatory Resource

Authors
  1. Thao Pa C.
  2. Mann A.W.
  3. Barber M.G.
  4. Kraus A.L.
  5. Tofflemire B.M.,Bush J.L.
  6. Wood M.L.
  7. Collins K.A.
  8. Vanderburg A.
  9. Quinn S.N.
  10. Zhou G.,Newton E.R.
  11. Ziegler C.
  12. Law N.
  13. Barkaoui K.
  14. Pozuelos F.J.,Timmermans M.
  15. Gillon M.
  16. Jehin E.
  17. Schwarz R.P.
  18. Gan T.
  19. Shporer A.,Horne K.
  20. Sefako R.
  21. Suarez O.
  22. Mekarnia D.
  23. Guillot T.
  24. Abe L.,Triaud A.H.M.J.
  25. Radford D.J.
  26. Lopez Murillo A.I.
  27. Ricker G.R.
  28. Winn J.N.,Jenkins J.M.
  29. Bouma L.G.
  30. Fausnaugh M.
  31. Guerrero N.M.
  32. Kunimoto M.
  33. Published by
    CDS
Abstract

Young (<500Myr) planets are critical to studying how planets form and evolve. Among these young planetary systems, multiplanet configurations are particularly useful, as they provide a means to control for variables within a system. Here, we report the discovery and characterization of a young planetary system, TOI-1224. We show that the planet host resides within a young population we denote as MELANGE-5. By employing a range of age-dating methods-isochrone fitting, lithium abundance analysis, gyrochronology, and Gaia excess variability-we estimate the age of MELANGE-5 to be 210+/-27Myr. MELANGE-5 is situated in close proximity to previously identified younger (80-110Myr) associations, Crius 221 and Theia 424/Volans-Carina, motivating further work to map out the group boundaries. In addition to a planet candidate detected by the TESS pipeline and alerted as a TESS object of interest, TOI-1224 b, we identify a second planet, TOI-1224 c, using custom search tools optimized for young stars (Notch and LOCoR). We find that the planets are 2.10+/-0.09R_{Earth}_ and 2.88+/-0.10R_{Earth}_ and orbit their host star every 4.18 and 17.95 days, respectively. With their bright (K=9.1mag), small (R*=0.44R_{sun}_), and cool (Teff=3326K) host star, these planets represent excellent candidates for atmospheric characterization with JWST.

Keywords
  1. stellar-associations
  2. radial-velocity
  3. line-intensities
  4. visible-astronomy
  5. spectroscopy
  6. photometry
Bibliographic source Bibcode
2024AJ....168...41T
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/168/41
IVOA Identifier IVOID
ivo://CDS.VizieR/J/AJ/168/41

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/168/41
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/168/41
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/168/41
IVOA Table Access TAP
http://tapvizier.cds.unistra.fr/TAPVizieR/tap
Run SQL-like queries with TAP-enabled clients (e.g., TOPCAT).
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/168/41/table3?
https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/168/41/table3?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/168/41/table3?

History

2024-10-11T12:23:15Z
Resource record created
2024-10-11T11:40:05Z
Updated
2024-10-11T12:23:15Z
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