New Variable Stars Discovered by the APACHE Survey. II. Results After the Second Observing Season

TL;DR

The APACHE survey, primarily aimed at finding transiting planets around M dwarfs, also effectively discovered 14 new variable stars during its second observing season, enriching the stellar variability catalog.

Contribution

This paper reports the discovery of 14 new variable stars using the APACHE survey data, highlighting its utility beyond exoplanet detection.

Findings

Discovered 14 new variable stars.

Demonstrated the survey's value for stellar variability studies.

Provided initial characterization of the new variables.

Abstract

Routinely operating since July 2012, the APACHE survey has celebrated its second birthday. While the main goal of the Project is the detection of transiting planets around a large sample of bright, nearby M dwarfs in the northern hemisphere, the APACHE large photometric database for hundreds of different fields represents a relevant resource to search for and provide a first characterization of new variable stars. We celebrate here the conclusion of the second year of observations by reporting the discovery of 14 new variables.