Photometric error analysis. VI. Confirmation of Reiger's theory of scintillation

Young, A. T.

doi:10.1086/110303

Cited by 177 publications

(144 citation statements)

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“…where I N and I sky are the photon counts from the star and sky, respectively, A is the area of the photometric aperture, and σ a is the scintillation limit defined by Young (1967) and Hartman et al (2005) as:…”

Section: Noisementioning

confidence: 99%

Variability Properties of Four Million Sources in the TESS Input Catalog Observed with the Kilodegree Extremely Little Telescope Survey

et al. 2017

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The Kilodegree Extremely Little Telescope (KELT) has been surveying more than 70% of the celestial sphere for nearly a decade. While the primary science goal of the survey is the discovery of transiting, large-radii planets around bright host stars, the survey has collected more than 10 6 images, with a typical cadence between 10 − 30 minutes, for more than 4 million sources with apparent visual magnitudes in the approximate range 7 < V < 13. Here we provide a catalog of 52,741 objects showing significant large-amplitude fluctuations likely caused by stellar variability and 62,229 objects identified with likely stellar rotation periods. The detected variability ranges in rms-amplitude from 3 mmag to 2.3 mag, and the detected periods range from ∼0.1 days to 2000 days. We provide variability upper limits for all other ∼4 million sources. These upper limits are principally a function of stellar brightness, but we achieve typical 1σ sensitivity on 30-minute timescales down to ∼5 mmag at V ∼ 8, and down to ∼43 mmag at V ∼ 13. We have matched our catalog to the TESS Input catalog and the AAVSO Variable Star Index to precipitate the follow up and classification of each source. The catalog is maintained as a living database on the Filtergraph visualization portal at the URL https://filtergraph.com/kelt_vars.

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Section: Noisementioning

confidence: 99%

Variability Properties of Four Million Sources in the TESS Input Catalog Observed with the Kilodegree Extremely Little Telescope Survey

et al. 2017

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“…This approximation, first suggested by Young (1967), is intended as an approximation and not a precise prediction. Young's approximation is given by…”

Section: Estimating Scintillation Noise With Young's Approximationmentioning

confidence: 99%

Atmospheric scintillation in astronomical photometry

Osborn¹,

Föhring²,

Dhillon³

et al. 2015

Mon. Not. R. Astron. Soc.

103

118

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“…The leading coefficient is rather approximate [we multiply by 2:5 log 10 (e) to convert to magnitudes], as scintillation can change by a factor of 2 in a few minutes (e.g., Young 1993). For the second night, our observations were 60 s long, with the air mass ranging from 1.12 to 1.37.…”

Section: Photometric Precisionmentioning

confidence: 99%

Pushing the Limits of Ground-based Photometric Precision: Submillimagnitude Time-Series Photometry of the Open Cluster NGC 6791

et al. 2005

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We present the results from a three-night, time-series study of the open cluster NGC 6791 using the Megacam wide-field mosaic CCD camera on the 6.5 m MMT telescope. The aim of this study was to demonstrate the ability to obtain very high precision photometry for a large number of stars. We achieved better than 1% precision for more than 8000 stars with 14:3 < R < 20:1 and submillimagnitude (as low as 0.36 mmag) precision for over 300 stars with 14:6 < R < 16:3 in the field of this cluster. We also discovered 10 new variable stars, including a possible Scuti variable with an amplitude of 2%, eight likely W UMa contact binaries, and a possible RS CVn star, and we identified seven suspected low-amplitude variables, including one star with an amplitude of 4 mmag. We comment on the implications of this study for a ground-based survey for transiting planets as small as Neptune.

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Photometric error analysis. VI. Confirmation of Reiger's theory of scintillation

Cited by 177 publications

References 0 publications

Variability Properties of Four Million Sources in the TESS Input Catalog Observed with the Kilodegree Extremely Little Telescope Survey

Variability Properties of Four Million Sources in the TESS Input Catalog Observed with the Kilodegree Extremely Little Telescope Survey

Atmospheric scintillation in astronomical photometry

Pushing the Limits of Ground-based Photometric Precision: Submillimagnitude Time-Series Photometry of the Open Cluster NGC 6791

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