Stellar parameters of pre-main sequence stars in Taurus and Auriga
Abstract
Young Stellar Objects represent the first stages of stellar evolution, and their characterization tests the initial conditions of planetary evolution. Here we present the simultaneous determination of the effective temperature, surface gravity, magnetic field strength, projected rotational velocity and veiling for about one hundred K and M pre-main sequence stars located in the Taurus-Auriga star forming region. We have employed a Markov Chain Monte Carlo approach to fit synthetic models to high-resolution (R ~ 45,000) infrared spectra (1.45 to 2.45 microns), obtained with the Immersion GRating INfrared Spectrometer (IGRINS). The simultaneous approach is critical for disentangling the spectral effects of various parameters. We discuss preliminary results and how they compare with previous, singly-determined physical parameters. This research is made possible by funding from the National Science Foundation grant AST-1908892.
- Publication:
-
American Astronomical Society Meeting Abstracts #235
- Pub Date:
- January 2020
- Bibcode:
- 2020AAS...23531604L