VizieR Online Data Catalog: Planet candidates from K2 Campaigns 1-13 (Wittenmyer+, 2020)
Abstract
Target selection for the K2-HERMES program is described fully in our previous work (Wittenmyer et al. 2018AJ....155...84W; Sharma et al. 2019MNRAS.490.5335S). For this study, we selected all K2 planet candidate host stars which had been observed in the K2-HERMES program.
We find 199 stars hosting 224 K2 planet candidates for which K2-HERMES spectra are available. The reduction and analysis procedures are identical to those of the GALAH and TESS-HERMES surveys, as described fully in Kos et al. (2017MNRAS.464.1259K), Buder et al. (2018MNRAS.478.4513B, Cat. J/MNRAS/478/4513), and Sharma et al. (2018MNRAS.473.2004S, Cat. J/MNRAS/473/2004). With a self-consistent set of spectroscopic parameters in hand (Teff, logg, [Fe/H]), we derived the stellar physical parameters using the ISOCHRONES Python package (Morton 2015ascl.soft03010M). ISOCHRONES is a Bayesian isochronic modeller that determines the mass, radius, and age of stars given various photometric and spectroscopic inputs using MESA Isochrones & Stellar Tracks (MIST) (Dotter 2016ApJS..222....8D) grids. For our analysis, we used the effective temperature (Teff), surface gravity (logg), 2MASS (H, J, Ks) (Skrutskie et al. 2006AJ....131.1163S, Cat. VII/233), and Gaia (G, GRP, GBP) photometric magnitudes along with parallax values obtained by Gaia DR2 (Gaia Collaboration 2018A&A...616A...1G, Cat. I/345) where available. (5 data files).- Publication:
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VizieR Online Data Catalog
- Pub Date:
- June 2023
- Bibcode:
- 2023yCat..74960851W
- Keywords:
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- Exoplanets;
- Stars: fundamental;
- Effective temperatures;
- Stars: masses;
- Stars: diameters;
- Spectra: optical