Journal Article

STEREO TRansiting Exoplanet and Stellar Survey (STRESS) – I. Introduction and data pipeline

Vinothini Sangaralingam and Ian R. Stevens

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 418, issue 2, pages 1325-1334
Published in print December 2011 | ISSN: 0035-8711
Published online November 2011 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-2966.2011.19581.x
STEREO TRansiting Exoplanet and Stellar Survey (STRESS) – I. Introduction and data pipeline

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The Solar TErrestrial RElations Observatory (STEREO) is a system of two identical spacecraft in heliocentric Earth orbit. We use the two heliospheric imagers (HI), which are wide-angle imagers with multibaffle systems, to perform high-precision stellar photometry in order to search for exoplanetary transits and understand stellar variables. The large cadence (40 min for HI-1 and 2 h for HI-2), high precision, wide magnitude range (R mag: 4–12) and broad sky coverage (nearly 20 per cent for HI-1A alone and 60 per cent of the sky in the zodiacal region for all instruments combined) of this instrument place it in a region left largely devoid by other current projects. In this paper, we describe the semi-automated pipeline devised for reduction of the data, some of the interesting characteristics of the data obtained and data-analysis methods used, along with some early results.

Keywords: methods: data analysis; planets and satellites: general; stars: variables: general

Journal Article.  6622 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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