How uncertainties on stellar atmospheric parameters impact exoplanet studies?
Abstract
Exoplanet properties depend on how well the host star is characterized. For instance, the stellar atmospheric parameters (i.e., effective temperature, surface gravity and overall metallicity) are needed to derive the stellar mass and radius by using evolutionary stellar models or empirical calibrations. I studied how the stellar uncertainties impact the determination of planetary characteristics. By using high-resolution spectra and iSpec, I evaluated how discrepancies between two different spectroscopic approaches (the equivalent method and the synthetic spectral fitting technique) can significantly affect the stellar radius estimation, hence, the exoplanet radius and its possible chemical composition.
Keywords
Cite
@article{arxiv.1711.02106,
title = {How uncertainties on stellar atmospheric parameters impact exoplanet studies?},
author = {Sergi Blanco-Cuaresma},
journal= {arXiv preprint arXiv:1711.02106},
year = {2017}
}
Comments
To appear in the "EWASS Special Session 4 (2017): Star-planet interactions" proceedings