Re: Teff, [Fe/H], and log(g) for exoplanet stars discovered after June 2018

Posted by karenacollins on Feb 05, 2022; 4:26am
URL: http://astroimagej.170.s1.nabble.com/Teff-Fe-H-and-log-g-for-exoplanet-stars-discovered-after-June-2018-tp1746p1747.html

I recommend starting with the values from the TIC catalog, which can be extracted from MAST, or maybe more easily from ExoFOP-TESS. Enter a TIC number or TOI number in the search box. Under stellar parameters, you will usual see one or more values for Teff and logg, but Fe/H is often not available unless spectroscopic values are available and posted. If Fe/H is not availaible, then the best you can do is use Fe/H = 0. If no values at all can be found, two options are to use 0.3 and 0.3 as the limb darkening coefficients, or use 0.3 for LD coefficient and let the other one fit.

Karen