Identifying A-stars in the CoRoT-fields IRa01, LRa01 and LRa02

TL;DR

This study developed a method to identify A-type stars in CoRoT fields using spectroscopic data, enabling better targeting for exoplanet searches around early-type stars.

Contribution

The paper presents a new spectroscopic identification process for A-stars in specific CoRoT fields, expanding the scope of planet search programs.

Findings

Identified 562 A-stars in three CoRoT fields.

Established a spectroscopic method for classifying early-type stars.

Facilitated future exoplanet research around A-type stars.

Abstract

Up to now, planet search programs have concentrated on main sequence stars later than spectral type F5. However, identifying planets of early type stars would be interesting. For example, the mass loss of planets orbiting early and late type stars is different because of the differences of the EUV and X-ray radiation of the host stars. As an initial step, we carried out a program to identify suitable A-stars in the CoRoT fields using spectra taken with the AAOmega spectrograph. In total we identified 562 A-stars in IRa01, LRa01, and LRa02.