2018A&A...615A.128A


Query : 2018A&A...615A.128A

2018A&A...615A.128A - Astronomy and Astrophysics, volume 615A, 128-128 (2018/7-1)

LASR-guided stellar photometric variability subtraction. The Linear Algorithm for Significance Reduction.

AHLERS J.P., BARNES J.W., HORVATH S.A., MYERS S.A. and HEDMAN M.M.

Abstract (from CDS):

We develop a technique for removing stellar variability in the light curves of δ-Scuti and similar stars. Our technique, which we name the Linear Algorithm for Significance Reduction (LASR), subtracts oscillations from a time series by minimizing their statistical significance in frequency space. We demonstrate that LASR can subtract variable signals of near-arbitrary complexity and can robustly handle close frequency pairs and overtone frequencies. We demonstrate that our algorithm performs an equivalent fit as prewhitening to the straightforward variable signal of KIC 9700322. We also show that LASR provides a better fit to seismic activity than prewhitening in the case of the complex δ-Scuti KOI-976.

Abstract Copyright: © ESO 2018

Journal keyword(s): asteroseismology - stars: variables: delta Scuti - methods: numerical - methods: data analysis - techniques: polarimetric

Simbad objects: 2

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Number of rows : 2
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 ASAS J190751+4629.2 dS* 19 07 50.7098534784 +46 29 11.907578082     12.610 12.74 12.165 F1V 31 0
2 BD+38 3569 EB* 19 23 46.6500313 +38 32 19.935284   9.90 9.69     A5(N) 34 0

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2021.09.26-02:08:46

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