Periodic variable stars in CoRoT field LRa02 observed with BEST II

Abstract

The Berlin Exoplanet Search Telescope II (BEST II) is a small wide field-of-view photometric survey telescope system located at the Observatorio Cerro Armazones, Chile. The high duty cycle combined with excellent observing conditions and millimagnitude photometric precision makes this instrument suitable for ground based support observations for the CoRoT space mission. Photometric data of the CoRoT LRa02 target field collected between November 2008 and March 2009 were analysed for stellar variability. The presented results will help in the future analysis of the CoRoT data, particularly in additional science programs related to variable stars. BEST II observes selected CoRoT target fields ahead of the space mission. The photometric data acquired are searched for stellar variability, periodic variable stars are identified with time series analysis of the obtained stellar light curves. We obtained the light curves of 104335 stars in the CoRoT LRa02 field over 41 nights. Variability was detected in light curves of 3726 stars of which 350 showed a regular period. These stars are, with the exception of 5 previously known variable stars, new discoveries.

The figures with light curves can be find in the A&A journal as online only

References in corpus (5)

• Variable stars across the observational HR diagram
• Prospects of long-time-series observations from Dome C for transit search
• Characterization of CoRoT target fields with BEST: Identification of periodic variable stars in the IR01 field
• Identification of Variable Stars in COROT's First Main Observing Field (LRc1)
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• First results of the Kourovka Planet Search: discovery of transiting exoplanet candidates in the first three target fields
• Multi-wavelength observations of IGR J17544-2619 from quiescence to outburst