Very regular high-frequency pulsation modes in young intermediate-mass stars
Article
Article Title | Very regular high-frequency pulsation modes in young intermediate-mass stars |
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ERA Journal ID | 17479 |
Article Category | Article |
Authors | Bedding, Timothy R. (Author), Murphy, Simon J. (Author), Hey, Daniel R. (Author), Huber, Daniel (Author), Li, Tanda (Author), Smalley, Barry (Author), Stello, Dennis (Author), White, Timothy R. (Author), Ball, Warrick H. (Author), Chaplin, William J. (Author), Colman, Isabel L. (Author), Fuller, Jim (Author), Gaidos, Eric (Author), Harbeck, Daniel R. (Author), Hermes, J. J. (Author), Holdsworth, Daniel L. (Author), Li, Gang (Author), Li, Yaguang (Author), Mann, Andrew W. (Author), Reese, Daniel R. (Author), Sekaran, Sanjay (Author), Yu, Jie (Author), Antoci, Victoria (Author), Bergmann, Christoph (Author), Brown, Timothy M. (Author), Howard, Andrew W. (Author), Ireland, Michael J. (Author), Isaacson, Howard (Author), Jenkins, Jon M. (Author), Kjeldsen, Hans (Author), McCully, Curtis (Author), Rabus, Markus (Author), Rains, Adam D. (Author), Ricker, George R. (Author), Tinney, Christopher G. (Author) and Vanderspek, Roland K. (Author) |
Journal Title | Nature |
Journal Citation | 581 (7807), pp. 147-151 |
Number of Pages | 14 |
Year | 2020 |
Publisher | Nature Publishing Group |
Place of Publication | United Kingdom |
ISSN | 0028-0836 |
0090-0028 | |
0300-8746 | |
1476-4687 | |
Digital Object Identifier (DOI) | https://doi.org/10.1038/s41586-020-2226-8 |
Web Address (URL) | https://www.nature.com/articles/s41586-020-2226-8 |
Abstract | Asteroseismology probes the internal structures of stars by using their natural pulsation frequencies1. It relies on identifying sequences of pulsation modes that can be compared with theoretical models, which has been done successfully for many classes of pulsators, including low-mass solar-type stars, red giants, high-mass stars and white dwarfs. However, a large group of pulsating stars of intermediate mass—the so-called δ Scuti stars—have rich pulsation spectra for which systematic mode identification has not hitherto been possible. This arises because only a seemingly random subset of possible modes are excited and because rapid rotation tends to spoil regular patterns. Here we report the detection of remarkably regular sequences of high-frequency pulsation modes in 60 intermediate-mass main-sequence stars, which enables definitive mode identification. The space motions of some of these stars indicate that they are members of known associations of young stars, as confirmed by modelling of their pulsation spectra. |
Keywords | probe; seismology; spectrum; Astrophysics - Solar and Stellar Astrophysics |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | University of Sydney |
University of Hawaii, United States | |
Keele University, United Kingdom | |
Aarhus University, Denmark | |
California Institute of Technology (Caltech), United States | |
Las Cumbres Observatory, United States | |
Boston University, United States | |
University of Central Lancashire, United Kingdom | |
University of North Carolina, United States | |
Sorbonne University, France | |
Catholic University of Leuven, Belgium | |
Max Planck Society, Germany | |
University of New South Wales | |
Australian National University | |
University of California, United States | |
National Aeronautics and Space Administration (NASA), United States | |
Massachusetts Institute of Technology, United States | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q7374/very-regular-high-frequency-pulsation-modes-in-young-intermediate-mass-stars
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