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How to separate the low amplitude δ Scuti variation from the instrumental ones in CoRoT data?

Published online by Cambridge University Press:  27 October 2016

József M. Benkő  and
Margit Paparó
József M. Benkő
Affiliation:
Konkoly Observatory, MTA CSFK, Konkoly Thege M. u. 15-17., H-1121 Budapest, Hungary email: [email protected]
Margit Paparó
Affiliation:
Konkoly Observatory, MTA CSFK, Konkoly Thege M. u. 15-17., H-1121 Budapest, Hungary email: [email protected]
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Abstract

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Rich regular frequency patterns were found in the Fourier spectra of low-amplitude δ Scuti stars observed by CoRoT satellite (see Paparó et al. in prep.). The CoRoT observations are, however, influenced by the disturbing effect of the South Atlantic Anomaly. The effect is marginal for high amplitude variable stars but it could be critical in the case of low amplitude variables, especially if the frequency range of the intrinsic variation overlaps the interval of the instrumental frequencies. Some tests were carried out both on synthetic and real data for distinguishing technical and stars' frequencies.

Keywords

methods: data analysisstars: variables: delta Scutitechniques: photometric
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , General Assembly A29B: Astronomy in Focus , August 2015 , pp. 529 - 531
Copyright
Copyright © International Astronomical Union 2016 

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