Very regular high-frequency pulsation modes in young intermediate-mass stars

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

DOI

  • Timothy R. Bedding, University of Sydney
  • ,
  • Simon J. Murphy, University of Sydney
  • ,
  • Daniel R. Hey, Sydney University
  • ,
  • Daniel Huber, University of Sydney
  • ,
  • Tanda Li, University of Sydney, University of Birmingham
  • ,
  • Barry Smalley, Keele University
  • ,
  • Dennis Stello
  • Timothy R. White, University of Sydney, Australian National University
  • ,
  • Warrick H. Ball, University of Birmingham
  • ,
  • William J. Chaplin, University of Birmingham
  • ,
  • Isabel L. Colman, Sydney University
  • ,
  • Jim Fuller, California Institute of Technology
  • ,
  • Eric Gaidos, University of Hawaii at Manoa
  • ,
  • Daniel R. Harbeck, Las Cumbres Observatory Global Telescope Network, Inc
  • ,
  • J. J. Hermes, Boston University
  • ,
  • Daniel L. Holdsworth, University of Central Lancashire
  • ,
  • Gang Li, Sydney University
  • ,
  • Yaguang Li, Sydney University
  • ,
  • Andrew W. Mann, University of North Carolina
  • ,
  • Daniel R. Reese, LESIA, Observatoire de Paris, PSL Ressearch University, CNRS, Sorbonne Universités
  • ,
  • Sanjay Sekaran, Katholieke Universiteit Leuven
  • ,
  • Jie Yu, Max Planck Institute for Solar System Research
  • ,
  • Victoria Antoci, Danmarks Tekniske Universitet
  • ,
  • Christoph Bergmann, University of New South Wales
  • ,
  • Timothy M. Brown, Las Cumbres Observatory Global Telescope Network, Inc
  • ,
  • Andrew W. Howard, California Institute of Technology
  • ,
  • Michael J. Ireland, Australian National University
  • ,
  • Howard Isaacson, University of California at Berkeley
  • ,
  • Jon M. Jenkins, NASA Ames Research Center
  • ,
  • Hans Kjeldsen
  • Curtis McCully, Las Cumbres Observatory Global Telescope Network, Inc
  • ,
  • Markus Rabus, Las Cumbres Observatory Global Telescope Network, Inc, University of California at Santa Barbara
  • ,
  • Adam D. Rains, Australian National University
  • ,
  • George R. Ricker, Massachusetts Institute of Technology
  • ,
  • Christopher G. Tinney, University of New South Wales
  • ,
  • Roland K. Vanderspek, Massachusetts Institute of Technology

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 stars2, red giants3, high-mass stars4 and white dwarfs5. 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 possible6,7. This arises because only a seemingly random subset of possible modes are excited and because rapid rotation tends to spoil regular patterns8–10. 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.

OriginalsprogEngelsk
TidsskriftNature
Vol/bind581
Sider (fra-til)147-151
Antal sider5
ISSN0028-0836
DOI
StatusUdgivet - maj 2020

Se relationer på Aarhus Universitet Citationsformater

ID: 188729169