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dc.contributor.authorBarceló Forteza, Sebatiá 
dc.contributor.authorPascual-Granado, Javier
dc.contributor.authorSuárez Yanes, Juan Carlos 
dc.contributor.authorGarcía Herández, Antonio
dc.contributor.authorMirouh, Giovanni Marcello 
dc.contributor.authorLares-Martiz, Mariel
dc.date.accessioned2024-11-28T08:43:59Z
dc.date.available2024-11-28T08:43:59Z
dc.date.issued2024-10-25
dc.identifier.citationBarceló Forteza, S. et. al. MNRAS 535, 2189–2209 (2024). [https://doi.org/10.1093/mnras/stae2439]es_ES
dc.identifier.urihttps://hdl.handle.net/10481/97492
dc.description.abstractThe presence of low-amplitude peaks o v er the noise in the power spectra of δScuti stars is frequently disregarded. These seemingly insignificant peaks, collectively referred to as grass , might contain valuable information about the origin of these stars and the reasons behind the occurrence or absence of a plateau. It is crucial to systematically parametrize the grass phenomenon throughout a comprehensive sample that covers the entire δScuti star parameter range. Thus, we conduct a quantitative study of long-duration, high-duty-cycle Transiting Exoplanet Survey Satellite light curves, leading to improved detection methods for plateaus and a deeper understanding of their nature. This approach minimizes the impact of unresolved peaks caused by mode variations o v er time. Additionally, we present appropriate analysis techniques to mitigate windo w ef fects and identify and eliminate spurious peaks. We demonstrate here that the grass can be ef fecti vely parametrized based on peak density. With such parametrization two distinct regimes are found: the sparse grass regime , characterized by low peak density and the absence of a plateau in the power spectra, and the dense grass regime , characterized by high peak densities and the presence of an observable plateau. Our study is the first rigorous quantification of the emergence of such a plateau in the power spectra of δScuti stars. Since the grass might be related with fractality, mode variability, and stellar rotation rate, its parametrization opens a new way to analyse these stars.es_ES
dc.description.sponsorshipFunding for the TESS mission is provided by the NASA Explorer Programes_ES
dc.description.sponsorshipSpanish State Research Agency (AEI) projects no. PID2019-107061GB-C64: ‘Contribu- tion of the UGR to the PLATO2.0 space missiones_ES
dc.description.sponsorshipSevero Ochoa grant CEX2021-001131-S funded by MCIN/AEI/ 10.13039/501100011033es_ES
dc.description.sponsorship‘Planes Complementarios’ Astrophysics and High Energy Physics of the Spanish MCIU (AST22 00001 26) and also these from the PLATO project collaboration with Centro de Astrobiolog ´ıa (PID2019-107061GB-C61)es_ES
dc.description.sponsorshipProject PID2019-107061GB-C63 from the ‘Programas Estatales de Generación de Conocimiento y Fortalecimiento Científico y Tecnológico del Sistema de I + D + i y de I + D + i Orientada a los Retos de la Sociedad’es_ES
dc.description.sponsorship‘European Regional Development Fund/Junta de Andaluc ´ıa- Consejer ´ıa de Econom ´ıa y Conocimiento’ under project E-FQM- 041-UGR18 by Universidad de Granadaes_ES
dc.description.sponsorshipProject AST22 00001 8 of the ‘Junta de Andalucía and the Ministerio de Ciencia, Innovación y Universidades’ funded by the NextGenerationEU and the ‘Plan de Recuperación, Transformación y Resiliencia’es_ES
dc.description.sponsorshipNSF grants AST -1910396 and AST -2108975 and NASA grants 80NSSC22K0622, 80NSSC21K0245, and NNX16AB76Ges_ES
dc.language.isoenges_ES
dc.publisherOxford University Presses_ES
dc.rightsAtribución 4.0 Internacional*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectasteroseismologyes_ES
dc.subjectstars: oscillations ( including pulsations )es_ES
dc.subjectstars: variables: Scuties_ES
dc.titleCharacterizing the features of the low-amplitude peaks in delta Scuti stars with TESSes_ES
dc.typejournal articlees_ES
dc.rights.accessRightsopen accesses_ES
dc.identifier.doi10.1093/mnras/stae2439
dc.type.hasVersionVoRes_ES


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