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In this talk, it is shown that MultiModes is an efficient tool for massive analysis of pulsating stars, in terms of computing time, and as accurate than one of the most used in the field, SigSpec. It has been tested with a sample of 32 stars in the field of the young open cluster Melotte 20, known as alpha Per, from which 11 of them are of type Delta Scuti variables. We have obtained the seismic index large separation in four of them: TIC 410732825; TIC 354792288; TIC 285935852 and TIC 252829836. One of these four stars, TIC 410732825, show a frequency multiplet of the same order and degree in its frequency difference histogram, resulting in a rotational speed of about 75-100 km/s. If we take into account its value for the projected velocity of around 71-107 km/s, it is showing us an equatorial vision. We built a mesh of 1D rotating stars models using MESA for the evolution, and FILOU for the calculation of the oscillations. We constrained the models by the large separation of the four stars and rotation for one of them, supposing solar metallicity. Considering that they are ZAMS stars, we used the corresponding relation between the frequency of maximum amplitud and effective temperature, to try to constrain, even more, the age of alpha Per between 103 and 131 Myr.
\n\n", "publication_date": "2021-10-10", "publisher": "Zenodo", "resource_type": { "id": "presentation", "title": { "de": "Pr\u00e4sentation", "en": "Presentation" } }, "rights": [ { "description": { "en": "The Creative Commons Attribution license allows re-distribution and re-use of a licensed work on the condition that the creator is appropriately credited." }, "icon": "cc-by-icon", "id": "cc-by-4.0", "props": { "scheme": "spdx", "url": "https://creativecommons.org/licenses/by/4.0/legalcode" }, "title": { "en": "Creative Commons Attribution 4.0 International" } } ], "subjects": [ { "subject": "Asteroseismology" }, { "subject": "Delta Scuti stars" }, { "subject": "alpha Per" } ], "title": "On the age determination of the open cluster alpha Per with asteroseismology" }, "parent": { "access": { "owned_by": { "user": 258535 } }, "communities": { "default": "99b9b1f6-e3d9-4dca-9689-7f097a43679b", "entries": [ { "access": { "member_policy": "open", "members_visibility": "public", "record_policy": "open", "review_policy": "open", "visibility": "public" }, "children": { "allow": false }, "created": "2021-07-15T13:04:29.077598+00:00", "custom_fields": {}, "deletion_status": { "is_deleted": false, "status": "P" }, "id": "99b9b1f6-e3d9-4dca-9689-7f097a43679b", "links": {}, "metadata": { "curation_policy": "
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