Determining the seismic age of the young open cluster αPer using δScuti stars Pamos Ortega, David García Hernández, Antonio Suárez Yanes, Juan Carlos Pascual Granado, Javier Barceló Forteza, Sebatiá Miscellaneous Asteroseismology Astronimical data bases Software: data analysis Stars: rotation Stars: variables: Scuti Galaxies: star formation ACKNOWLEDGEMENTS This publication is part of the project ‘Contribution of the UGR to the PLATO2.0 space mission. Phases C / D-1’, funded by MCNI/AEI/PID2019-107061GB-C64. DPO acknowledges MNRAS for the opportunity to publish his first scientific article, in particular to the assistant editor, Bella Lock, for her comments. He also appreciates the comments of the anonymous reviewer of this article. They have undoubtedly contributed to improving it. He also acknowledges all the co-authors of this work, especially to JCS and AGH, his thesis project directors, because without them, he would not have been able to publish this work. And he also appreciates the patience of his wife, Pilar, and his son, Fernando, for all the time they have allowed him to get to this point. AGH acknowledges funding support from Spanish public funds for research under project PID2019-107061GB-C64 by the Spanish Ministry of Science and Education, and from ‘European Regional Development Fund/Junta de Andalucía-Consejería de Economía y Conocimiento’ under project E-FQM-041-UGR18 by Universidad de Granada. JPG acknowledges funding support from Spanish public funds for research from project 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’, as well as from the State Agency for Research of the Spanish MCIU through the ‘Center of Excellence Severo Ochoa’ award to the Instituto de Astrofísica de Andalucía (SEV-2017-0709). SBF received financial support from the Spanish State Research Agency (AEI) Projects No. PID2019-107061GB-C64. He also thanks the resources received from the PLATO project collaboration with Centro de Astrobiología (PID2019-107061GB-C61). This paper includes data collected with the TESS mission, obtained from the MAST data archive at the Space Telescope Science Institute (STScI). Funding for the TESS mission is provided by the NASA Explorer Program. STScI is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555. DATA AVAILABILITY Tables of the most significant peaks, corresponding to each of the 11 δ Sct stars of our sample, extracted with MM, are available in VizieR DataBase. In them, we can find the values of the frequencies, amplitudes, phases, corresponding errors, and S/N of the extracted peaks. In this work, we aim at constraining the age of the young open cluster Melotte 20, known as α Per, using seismic indices. The method consists of the following steps: (1) Extract the frequency content of a sample of stars in the field of an open cluster. (2) Search for possible regularities in the frequency spectra of δ Sct stars candidates, using different techniques, such as the Fourier transform, the autocorrelation function, the histogram of frequency differences and the échelle diagram. (3) Constrain the age of the selected stars by both the physical parameters and seismic indices by comparing them with a grid of asteroseismic models representative of δ Sct stars. (4) Find possible common ages between these stars to determine the age of the cluster. We performed the pulsation analysis with MultiModes, a rapid, accurate and powerful open-source code, which is presented in this paper. The result is that the age of α Per could be between 96 and 100 Myr. This is an improvement over different techniques in the past. We therefore show that space astroseismology is capable of taking important steps in the dating of young open clusters. 2022-06-21T10:10:13Z 2022-06-21T10:10:13Z 2022-04-06 journal article David Pamos Ortega, Antonio García Hernández, Juan Carlos Suárez, Javier Pascual Granado, Sebastià Barceló Forteza, José Ramón Rodón, Determining the seismic age of the young open cluster α Per using δ Scuti stars, Monthly Notices of the Royal Astronomical Society, Volume 513, Issue 1, June 2022, Pages 374–388, [https://doi.org/10.1093/mnras/stac864] http://hdl.handle.net/10481/75577 10.1093/mnras/stac864 eng http://creativecommons.org/licenses/by-nc-nd/3.0/es/ open access Atribución-NoComercial-SinDerivadas 3.0 España Oxford University Press