Identifying A Stars in the CoRoT Fields IRa01, LRa01 and LRa02

TL;DR

This study identifies 562 A-type stars in specific CoRoT fields to facilitate planet searches around early-type stars, expanding the scope beyond traditionally studied later-type stars.

Contribution

It presents the first large-scale identification of A-stars in CoRoT fields using spectroscopic data, enabling future exoplanet research around early-type stars.

Findings

Identified 562 A-stars in three CoRoT fields.

Provided a catalog for future planet search efforts.

Expanded the target range for exoplanet studies.

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.