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Correcting systematic effects in a large set of photometric light curves

Tamuz, O. and Mazeh, T. and Zucker, S. (2005) Correcting systematic effects in a large set of photometric light curves. Monthly Notices of the Royal Astronomical Society, 356 (4). pp. 1466-1470. ISSN 0035-8711. doi:10.1111/j.1365-2966.2004.08585.x.

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We suggest a new algorithm to remove systematic effects in a large set of lightcurves obtained by a photometric survey. The algorithm can remove systematic effects, like the ones associated with atmospheric extinction, detector efficiency, or PSF changes over the detector. The algorithm works without any prior knowledge of the effects, as long as they linearly appear in many stars of the sample. The approach, which was originally developed to remove atmospheric extinction effects, is based on a lower rank approximation of matrices, an approach which was already suggested and used in chemometrics, for example. The proposed algorithm is specially useful in cases where the uncertainties of the measurements are unequal. For equal uncertainties the algorithm reduces to the Principal Components Analysis (PCA) algorithm. We present a simulation to demonstrate the effectiveness of the proposed algorithm and point out its potential, in search for transit candidates in particular.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Tamuz, O.0000-0002-0111-0418
Additional Information:© 2004 RAS. In original form 2004 August 16. Received 2004 October 13. Accepted 2004 November 1. First published online February 1, 2005. This work was supported by the Israeli Science Foundation through grant no. 03/233. SZ wishes to acknowledge support by the European RTN ‘The Origin of Planetary Systems’ (PLANETS, contract number HPRN-CT-2002-00308) in the form of a fellowship.
Funding AgencyGrant Number
Israel Science Foundation03/233
European Research Training NetworkHPRN-CT-2002-00308
Subject Keywords:atmospheric effects – methods: data analysis – methods: statistical – techniques: photometric – surveys – planetary systems
Issue or Number:4
Record Number:CaltechAUTHORS:20161109-161950022
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Official Citation:O. Tamuz, T. Mazeh, and S. Zucker Correcting systematic effects in a large set of photometric light curves MNRAS (2005) Vol. 356 1466-1470 doi:10.1111/j.1365-2966.2004.08585.x First published online February 1, 2005
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:71900
Deposited By: George Porter
Deposited On:11 Nov 2016 16:29
Last Modified:11 Nov 2021 04:53

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