Open AccessThe needle in the haystack: searching for transiting extrasolar planets in CoRoT stellar light curves
Author(s) -
Grziwa S.,
Pätzold M.,
Carone L.
Publication year - 2012
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1111/j.1365-2966.2011.19970.x
Subject(s) - physics , light curve , transit (satellite) , haystack , exoplanet , planet , filter (signal processing) , software , astronomy , software package , astrophysics , artificial intelligence , computer science , public transport , political science , law , computer vision , programming language
ABSTRACT exotrans is a software package developed by the Department of Planetary Research of the Rheinisches Institut für Umweltforschung (RIU‐PF) at Cologne University for detecting transit signals from extrasolar planets in stellar light curves. exotrans is used very successfully by RIU‐PF within the CoRoT mission. The software package uses two different filter algorithms for pre‐whitening and noise reduction (harmonic and trend filtering). Three different box‐fitting least‐squares algorithms (BLS) are applied in order to extract a potential transit signal from the light curves. The performance of each filter‐BLS‐algorithm combination on real CoRoT data is presented and compared with other methods used by the CoRoT team.