KEPLER MISSION STELLAR and INSTRUMENT NOISE PROPERTIES REVISITED

Ronald Lynn Gilliland, William J. Chaplin, Jon M. Jenkins, Lawrence William Ramsey, Jeffrey C. Smith

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

An earlier study of the Kepler Mission noise properties on timescales of primary relevance to detection of exoplanet transits found that higher than expected noise followed, to a large extent, from the stars rather than instrument or data analysis performance. The earlier study over the first six quarters of Kepler data is extended to the full four years ultimately comprising the mission. Efforts to improve the pipeline data analysis have been successful in reducing noise levels modestly as evidenced by smaller values derived from the current data products. The new analyses of noise properties on transit timescales show significant changes in the component attributed to instrument and data analysis, with essentially no change in the inferred stellar noise. We also extend the analyses to timescales of several days, instead of several hours to better sample stellar noise that follows from magnetic activity. On the longer timescale there is a shift in stellar noise for solar-type stars to smaller values in comparison to solar values.

Original languageEnglish (US)
Article number133
JournalAstronomical Journal
Volume150
Issue number4
DOIs
StatePublished - Oct 1 2015

Fingerprint

timescale
transit
Kepler mission
stars
data products
extrasolar planets
shift
data analysis
product
detection
comparison
noise level

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Gilliland, R. L., Chaplin, W. J., Jenkins, J. M., Ramsey, L. W., & Smith, J. C. (2015). KEPLER MISSION STELLAR and INSTRUMENT NOISE PROPERTIES REVISITED. Astronomical Journal, 150(4), [133]. https://doi.org/10.1088/0004-6256/150/4/133
Gilliland, Ronald Lynn ; Chaplin, William J. ; Jenkins, Jon M. ; Ramsey, Lawrence William ; Smith, Jeffrey C. / KEPLER MISSION STELLAR and INSTRUMENT NOISE PROPERTIES REVISITED. In: Astronomical Journal. 2015 ; Vol. 150, No. 4.
@article{fff1a52e9a814007a91f40ad07918080,
title = "KEPLER MISSION STELLAR and INSTRUMENT NOISE PROPERTIES REVISITED",
abstract = "An earlier study of the Kepler Mission noise properties on timescales of primary relevance to detection of exoplanet transits found that higher than expected noise followed, to a large extent, from the stars rather than instrument or data analysis performance. The earlier study over the first six quarters of Kepler data is extended to the full four years ultimately comprising the mission. Efforts to improve the pipeline data analysis have been successful in reducing noise levels modestly as evidenced by smaller values derived from the current data products. The new analyses of noise properties on transit timescales show significant changes in the component attributed to instrument and data analysis, with essentially no change in the inferred stellar noise. We also extend the analyses to timescales of several days, instead of several hours to better sample stellar noise that follows from magnetic activity. On the longer timescale there is a shift in stellar noise for solar-type stars to smaller values in comparison to solar values.",
author = "Gilliland, {Ronald Lynn} and Chaplin, {William J.} and Jenkins, {Jon M.} and Ramsey, {Lawrence William} and Smith, {Jeffrey C.}",
year = "2015",
month = "10",
day = "1",
doi = "10.1088/0004-6256/150/4/133",
language = "English (US)",
volume = "150",
journal = "Astronomical Journal",
issn = "0004-6256",
publisher = "IOP Publishing Ltd.",
number = "4",

}

Gilliland, RL, Chaplin, WJ, Jenkins, JM, Ramsey, LW & Smith, JC 2015, 'KEPLER MISSION STELLAR and INSTRUMENT NOISE PROPERTIES REVISITED', Astronomical Journal, vol. 150, no. 4, 133. https://doi.org/10.1088/0004-6256/150/4/133

KEPLER MISSION STELLAR and INSTRUMENT NOISE PROPERTIES REVISITED. / Gilliland, Ronald Lynn; Chaplin, William J.; Jenkins, Jon M.; Ramsey, Lawrence William; Smith, Jeffrey C.

In: Astronomical Journal, Vol. 150, No. 4, 133, 01.10.2015.

Research output: Contribution to journalArticle

TY - JOUR

T1 - KEPLER MISSION STELLAR and INSTRUMENT NOISE PROPERTIES REVISITED

AU - Gilliland, Ronald Lynn

AU - Chaplin, William J.

AU - Jenkins, Jon M.

AU - Ramsey, Lawrence William

AU - Smith, Jeffrey C.

PY - 2015/10/1

Y1 - 2015/10/1

N2 - An earlier study of the Kepler Mission noise properties on timescales of primary relevance to detection of exoplanet transits found that higher than expected noise followed, to a large extent, from the stars rather than instrument or data analysis performance. The earlier study over the first six quarters of Kepler data is extended to the full four years ultimately comprising the mission. Efforts to improve the pipeline data analysis have been successful in reducing noise levels modestly as evidenced by smaller values derived from the current data products. The new analyses of noise properties on transit timescales show significant changes in the component attributed to instrument and data analysis, with essentially no change in the inferred stellar noise. We also extend the analyses to timescales of several days, instead of several hours to better sample stellar noise that follows from magnetic activity. On the longer timescale there is a shift in stellar noise for solar-type stars to smaller values in comparison to solar values.

AB - An earlier study of the Kepler Mission noise properties on timescales of primary relevance to detection of exoplanet transits found that higher than expected noise followed, to a large extent, from the stars rather than instrument or data analysis performance. The earlier study over the first six quarters of Kepler data is extended to the full four years ultimately comprising the mission. Efforts to improve the pipeline data analysis have been successful in reducing noise levels modestly as evidenced by smaller values derived from the current data products. The new analyses of noise properties on transit timescales show significant changes in the component attributed to instrument and data analysis, with essentially no change in the inferred stellar noise. We also extend the analyses to timescales of several days, instead of several hours to better sample stellar noise that follows from magnetic activity. On the longer timescale there is a shift in stellar noise for solar-type stars to smaller values in comparison to solar values.

UR - http://www.scopus.com/inward/record.url?scp=84946714875&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84946714875&partnerID=8YFLogxK

U2 - 10.1088/0004-6256/150/4/133

DO - 10.1088/0004-6256/150/4/133

M3 - Article

AN - SCOPUS:84946714875

VL - 150

JO - Astronomical Journal

JF - Astronomical Journal

SN - 0004-6256

IS - 4

M1 - 133

ER -

Gilliland RL, Chaplin WJ, Jenkins JM, Ramsey LW, Smith JC. KEPLER MISSION STELLAR and INSTRUMENT NOISE PROPERTIES REVISITED. Astronomical Journal. 2015 Oct 1;150(4). 133. https://doi.org/10.1088/0004-6256/150/4/133