Analysis of pulsating variable stars using the visibility graph algorithm

We study the light curves of pulsating variable stars using a complex network approach to build visibility graphs. We consider various types of variables stars (e.g., Cepheids, δ Scuti, RR Lyrae), build two types of graphs (the normal visibility graph (VG) and the horizontal visibility graph (HVG)),...

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Autores principales:	Víctor Muñoz, N. Elizabeth Garcés
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/62af3a932db548579881e6b645bb70ca
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spelling	oai:doaj.org-article:62af3a932db548579881e6b645bb70ca2021-11-25T06:19:46ZAnalysis of pulsating variable stars using the visibility graph algorithm1932-6203https://doaj.org/article/62af3a932db548579881e6b645bb70ca2021-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC8598052/?tool=EBIhttps://doaj.org/toc/1932-6203We study the light curves of pulsating variable stars using a complex network approach to build visibility graphs. We consider various types of variables stars (e.g., Cepheids, δ Scuti, RR Lyrae), build two types of graphs (the normal visibility graph (VG) and the horizontal visibility graph (HVG)), and calculate various metrics for the resulting networks. We find that all networks have a power-law degree distribution for the VG and an exponential distribution for the HVG, suggesting that it is a universal feature, regardless of the pulsation features. Metrics such as the average degree, the clustering coefficient and the transitivity coefficient, can distinguish between some star types. We also observe that the results are not strongly affected by the presence of observation gaps in the light curves. These findings suggest that the visibility graph algorithm may be a useful technique to study variability in stars.Víctor MuñozN. Elizabeth GarcésPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Víctor Muñoz N. Elizabeth Garcés Analysis of pulsating variable stars using the visibility graph algorithm
description	We study the light curves of pulsating variable stars using a complex network approach to build visibility graphs. We consider various types of variables stars (e.g., Cepheids, δ Scuti, RR Lyrae), build two types of graphs (the normal visibility graph (VG) and the horizontal visibility graph (HVG)), and calculate various metrics for the resulting networks. We find that all networks have a power-law degree distribution for the VG and an exponential distribution for the HVG, suggesting that it is a universal feature, regardless of the pulsation features. Metrics such as the average degree, the clustering coefficient and the transitivity coefficient, can distinguish between some star types. We also observe that the results are not strongly affected by the presence of observation gaps in the light curves. These findings suggest that the visibility graph algorithm may be a useful technique to study variability in stars.
format	article
author	Víctor Muñoz N. Elizabeth Garcés
author_facet	Víctor Muñoz N. Elizabeth Garcés
author_sort	Víctor Muñoz
title	Analysis of pulsating variable stars using the visibility graph algorithm
title_short	Analysis of pulsating variable stars using the visibility graph algorithm
title_full	Analysis of pulsating variable stars using the visibility graph algorithm
title_fullStr	Analysis of pulsating variable stars using the visibility graph algorithm
title_full_unstemmed	Analysis of pulsating variable stars using the visibility graph algorithm
title_sort	analysis of pulsating variable stars using the visibility graph algorithm
publisher	Public Library of Science (PLoS)
publishDate	2021
url	https://doaj.org/article/62af3a932db548579881e6b645bb70ca
work_keys_str_mv	AT victormunoz analysisofpulsatingvariablestarsusingthevisibilitygraphalgorithm AT nelizabethgarces analysisofpulsatingvariablestarsusingthevisibilitygraphalgorithm
_version_	1718413866118938624

Analysis of pulsating variable stars using the visibility graph algorithm

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