Photometric & spectroscopic obs. of TOI-954 and K2-329

DOI

We report the discovery of two short-period Saturn-mass planets, one transiting the G subgiant TOI-954 (TIC44792534, V=10.343, T=9.78) observed in TESS sectors 4 and 5 and one transiting the G dwarf K2-329 (EPIC246193072, V=12.70, K=10.67) observed in K2 campaigns 12 and 19. We confirm and characterize these two planets with a variety of ground-based archival and follow-up observations, including photometry, reconnaissance spectroscopy, precise radial velocity, and high-resolution imaging. Combining all available data, we find that TOI-954b has a radius of 0.852_-0.062_^+0.053^R_Jup_ and a mass of 0.174_-0.017_^+0.018^M_Jup_ and is in a 3.68day orbit, while K2-329b has a radius of 0.774_-0.024_^+0.026^R_Jup_ and a mass of 0.260_-0.022_^+0.020^M_Jup_ and is in a 12.46day orbit. As TOI-954b is 30 times more irradiated than K2-329b but more or less the same size, these two planets provide an opportunity to test whether irradiation leads to inflation of Saturn-mass planets and contribute to future comparative studies that explore Saturn-mass planets at contrasting points in their lifetimes.

Cone search capability for table J/AJ/161/82/table1 (Summary of Photometric Observations)

Cone search capability for table J/AJ/161/82/table4 (Summary of Spectroscopic Observations)

Identifier
DOI http://doi.org/10.26093/cds/vizier.51610082
Source https://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/AJ/161/82
Related Identifier https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/161/82
Related Identifier http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/161/82
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_b2find&identifier=ivo://CDS.VizieR/J/AJ/161/82
Provenance
Creator Sha L.; Huang C.X.; Shporer A.; Rodriguez J.E.; Vanderburg A.; Brahm R.,Hagelberg J.; Matthews E.C.; Ziegler C.; Livingston J.H.; Stassun K.G.,Wright D.J.; Crane J.D.; Espinoza N.; Bouchy F.; Bakos G.A.; Collins K.A.,Zhou G.; Bieryla A.; Hartman J.D.; Wittenmyer R.A.; Nielsen L.D.,Plavchan P.; Bayliss D.; Sarkis P.; Tan T.-G.; Cloutier R.; Mancini L.,Jordan A.; Wang S.; Henning T.; Narita N.; Penev K.; Teske J.K.; Kane S.R.,Mann A.W.; Addison B.C.; Tamura M.; Horner J.; Barbieri M.; Burt J.A.,Diaz M.R.; Crossfield I.J.M.; Dragomir D.; Drass H.; Feinstein A.D.,Zhang H.; Hart R.; Kielkopf J.F.; Jensen E.L.N.; Montet B.T.; Ottoni G.,Schwarz R.P.; Rojas F.; Nespral D.; Torres P.; Mengel M.W.; Udry S.,Zapata A.; Snoddy E.; Okumura J.; Ricker G.R.; Vanderspek R.K.; Latham D.W.,Winn J.N.; Seager S.; Jenkins J.M.; Colon K.D.; Henze C.E.,Krishnamurthy A.; Ting E.B.; Vezie M.; Villanueva S.
Publisher CDS
Publication Year 2021
Rights https://cds.unistra.fr/vizier-org/licences_vizier.html
OpenAccess true
Contact CDS support team <cds-question(at)unistra.fr>
Representation
Resource Type Dataset; AstroObjects
Discipline Astrophysics and Astronomy; Exoplanet Astronomy; Interdisciplinary Astronomy; Natural Sciences; Observational Astronomy; Physics; Stellar Astronomy