An examination of some characteristics of Kepler short- and long-cadence data
Article
Article Title | An examination of some characteristics of Kepler short- and long-cadence data |
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ERA Journal ID | 1074 |
Article Category | Article |
Authors | |
Author | Murphy, Simon J. |
Journal Title | Monthly Notices of the Royal Astronomical Society |
Journal Citation | 422 (1), pp. 665-671 |
Number of Pages | 7 |
Year | 2012 |
Publisher | Oxford University Press |
Place of Publication | United Kingdom |
ISSN | 0035-8711 |
1365-2966 | |
Digital Object Identifier (DOI) | https://doi.org/10.1111/j.1365-2966.2012.20644.x |
Web Address (URL) | https://academic.oup.com/mnras/article/422/1/665/1025140 |
Abstract | A close comparison of Kepler short- and long-cadence data released prior to 2011 November 1 has shown some subtle differences that make the short-cadence data superior to their long-cadence counterparts. The inevitable results of a faster sampling rate are present: the short-cadence data provide greater time resolution for short-lived events like flares, and have a much higher Nyquist frequency than the long-cadence data; however, they also contain fewer high-amplitude peaks at low frequency and allow a more precise determination of pulsation frequencies, amplitudes and phases. The latter observation indicates that Kepler data are not normally distributed. Moreover, a close inspection of the Pre-search Data Conditioned long-cadence data shows residuals that have increased noise on time-scales important to asteroseismology, but unimportant to planet searches. |
Keywords | Asteroseismology; Methods: data analysis; Methods: observational; Stars: activity; Stars: oscillations; Techniques: photometric; Astrophysics - Solar and Stellar Astrophysics |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
Public Notes | This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2012 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. |
Byline Affiliations | University of Central Lancashire, United Kingdom |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q739v/an-examination-of-some-characteristics-of-kepler-short-and-long-cadence-data
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