2022MNRAS.514.2793B

Query : 2022MNRAS.514.2793B

2022MNRAS.514.2793B - Mon. Not. R. Astron. Soc., 514, 2793-2804 (2022/August-1)

Classifying Kepler light curves for 12 000 A and F stars using supervised feature-based machine learning.

BARBARA N.H., BEDDING T.R., FULCHER B.D., MURPHY S.J. and VAN REETH T.

Abstract (from CDS):

With the availability of large-scale surveys like Kepler and TESS, there is a pressing need for automated methods to classify light curves according to known classes of variable stars. We introduce a new algorithm for classifying light curves that compares 7000 time-series features to find those that most effectively classify a given set of light curves. We apply our method to Kepler light curves for stars with effective temperatures in the range 6500-10 000 K. We show that the sample can be meaningfully represented in an interpretable 5D feature space that separates seven major classes of light curves (δ Scuti stars, γ Doradus stars, RR Lyrae stars, rotational variables, contact eclipsing binaries, detached eclipsing binaries, and non-variables). We achieve a balanced classification accuracy of 82 per cent on an independent test set of Kepler stars using a Gaussian mixture model classifier. We use our method to classify 12 000 Kepler light curves from Quarter 9 and provide a catalogue of the results. We further outline a confidence heuristic based on probability density to search our catalogue and extract candidate lists of correctly classified variable stars.

Journal keyword(s): asteroseismology - methods: data analysis - binaries: eclipsing - stars: oscillations - stars: variables: general

Simbad objects: 1

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Number of rows : 1

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2026	#notes
1	UCAC4 685-071756	V*	19 47 12.6085485220	+46 56 04.504109765		16.593	16.128	15.878		~	10	0

Query : 2022MNRAS.514.2793B

Basic data :

UCAC4 685-071756 -- Variable Star

* (2013ApJ,UCAC4,...), V* (2019MNRAS), NIR (2MASS)

19 47 12.6085485220 +46 56 04.504109765 (Optical) [ 0.0260 0.0267 90 ] A 2020yCat.1350....0G

19 45 42.5819048059 +46 48 35.567565283 [ 0.0260 0.0267 90 ]

080.5108166648443 +10.7600967026587 [ 0.0260 0.0267 90 ]

2.118 -0.090 [0.033 0.034 90] A 2020yCat.1350....0G

0.4858 [0.0289] A 2020yCat.1350....0G

B 16.593 [0.05] E 2012yCat.1322....0Z

V 16.128 [0.01] E 2012yCat.1322....0Z

R 15.878 [0.14] E 2012yCat.1322....0Z

G 15.875027 [0.002782] C 2022yCat.1355....0G

J 14.847 [0.032] C 2003yCat.2246....0C

H 14.552 [0.052] C 2003yCat.2246....0C

K 14.541 [0.081] C 2003yCat.2246....0C

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`UCAC4 685-071756`	`2MASS J19471260+4656044`	`Gaia DR3 2080366095290811264`
`KIC 10024862`	`SPOCS 2416`

References (10 between 1850 and 2026) (Total 10)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).

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UCAC4 685-071756 KIC 10024862 2MASS J19471260+4656044 Gaia DR3 2080366095290811264

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