Connecting the formation of stars and planets. I -- Spectroscopic characterization of host stars with TIGRE

TL;DR

This paper introduces a semi-automatic spectral analysis method using iSpec for characterizing host stars of exoplanets with TIGRE, aiming to connect star and planet formation processes.

Contribution

Developed and tested a new spectral analysis method with iSpec for homogeneous determination of stellar parameters using TIGRE spectra.

Findings

Successfully analyzed 46 exoplanet host stars.

Determined fundamental stellar parameters with the new method.

Established a basis for connecting star and planet formation studies.

Abstract

In search for a connection between the formation of stars and the formation of planets, a new semi-automatic spectral analysis method using \textsf{iSpec} was developed for the TIGRE telescope installed in Guanajuato, Mexico. TIGRE is a 1.2m robotic telescope, equipped with an Echelle spectrograph (HEROS), with a resolution R $\simeq 20000$. \textsf{iSpec} is a synthetic spectral fitting program for stars that allows to determine in an homogeneous way their fundamental parameters: effective temperature, $T_{\rm eff}$, surface gravity, $\log g$, metallicities, $[M/H]$ and $[Fe/H]$, and rotational velocity, $V \sin i$. In this first article we test our method by analysing the spectra of 46 stars, host of exoplanets, obtained with the TIGRE.