TRUFAS, a wavelet based algorithm for the rapid detection of planetary transits
| Autor: | Regulo, C., Almenara, M., Alonso, R., Deeg, H. J., Cortes, T. Roca |
|---|---|
| Rok vydání: | 2007 |
| Předmět: | |
| Zdroj: | Astron.Astrophys.467:1345,2007 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1051/0004-6361:20066827 |
| Popis: | Aims: We describe a fast, robust and automatic detection algorithm, TRUFAS, and apply it to data that are being expected from the CoRoT mission. Methods: The procedure proposed for the detection of planetary transits in light curves works in two steps: 1) a continuous wavelet transformation of the detrended light curve with posterior selection of the optimum scale for transit detection, and 2) a period search in that selected wavelet transformation. The detrending of the light curves are based on Fourier filtering or a discrete wavelet transformation. TRUFAS requires the presence of at least 3 transit events in the data. Results: The proposed algorithm is shown to identify reliably and quickly the transits that had been included in a standard set of 999 light curves that simulate CoRoT data. Variations in the pre-processing of the light curves and in the selection of the scale of the wavelet transform have only little effect on TRUFAS' results. Conclusions: TRUFAS is a robust and quick transit detection algorithm, especially well suited for the analysis of very large volumes of data from space or ground-based experiments, with long enough durations for the target-planets to produce multiple transit events. Comment: 9 pages, 10 figures, accepted by A&A |
| Databáze: | arXiv |
| Externí odkaz: |
|