Five young δ Scuti stars in the Pleiades seen with Kepler/K2
Article
Article Title | Five young δ Scuti stars in the Pleiades seen with Kepler/K2 |
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ERA Journal ID | 1074 |
Article Category | Article |
Authors | Murphy, Simon J. (Author), Bedding, Timothy R. (Author), White, Timothy R. (Author), Li, Yaguang (Author), Hey, Daniel (Author), Reese, Daniel (Author) and Joyce, Meridith (Author) |
Journal Title | Monthly Notices of the Royal Astronomical Society |
Journal Citation | 511 (4), pp. 5718-5729 |
Number of Pages | 12 |
Year | 2022 |
Publisher | Oxford University Press |
Place of Publication | United Kingdom |
ISSN | 0035-8711 |
1365-2966 | |
Digital Object Identifier (DOI) | https://doi.org/10.1093/mnras/stac240 |
Web Address (URL) | https://academic.oup.com/mnras/article/511/4/5718/6517320 |
Abstract | We perform mode identification for five δ Scuti stars in the Pleiades star cluster, using custom light curves from K2 photometry. By creating echelle diagrams, we identify radial and dipole mode ridges, comprising a total of 28 radial and 16 dipole modes across the five stars. We also suggest possible identities for those modes that lie offset from the radial and dipole ridges. We calculate non-rotating stellar pulsation models to verify our mode identifications, finding good agreement within the age and metallicity constraints of the cluster. We also find that for all stars, the least dense models are preferred, reflecting the lower density of these oblate, rotating stars. Three of the five stars show rotationally split multiplets. We conclude that the sample shows promise for asteroseismic rotation rates, masses, and ages with rotating models in the future. Our preliminary modelling also indicates some sensitivity to the helium abundance. |
Keywords | asteroseismology; stars: evolution; stars: oscillations; stars: variables: δ Scuti; star clusters: individual: Pleiades; Astrophysics - Solar and Stellar Astrophysics |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
Public Notes | This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2022 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. |
Byline Affiliations | University of Sydney |
Sorbonne University, France | |
Space Telescope Science Institute, United States | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q73q4/five-young-scuti-stars-in-the-pleiades-seen-with-kepler-k2
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