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

Timothy R. Bedding; Simon J. Murphy; Daniel R. Hey; Daniel Huber; Tanda Li; Barry Smalley; Dennis Stello; Timothy R. White; Warrick H. Ball; William J. Chaplin; Isabel L. Colman; Jim Fuller; Eric Gaidos; Daniel R. Harbeck; J. J. Hermes; Daniel L. Holdsworth; Gang Li; Yaguang Li; Andrew W. Mann; Daniel R. Reese; Sanjay Sekaran; Jie Yu; Victoria Antoci; Christoph Bergmann; Timothy M. Brown; Andrew W. Howard; Michael J. Ireland; Howard Isaacson; Jon M. Jenkins; Hans Kjeldsen; Curtis McCully; Markus Rabus; Adam D. Rains; George R. Ricker; Christopher G. Tinney; Roland K. Vanderspek

doi:10.1038/s41586-020-2226-8

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

Timothy R. Bedding, Simon J. Murphy, Daniel R. Hey, Daniel Huber, Tanda Li, Barry Smalley, Dennis Stello, Timothy R. White, Warrick H. Ball, William J. Chaplin, Isabel L. Colman, Jim Fuller, Eric Gaidos, Daniel R. Harbeck, J. J. Hermes, Daniel L. Holdsworth, Gang Li, Yaguang Li, Andrew W. Mann, Daniel R. ReeseSanjay Sekaran, Jie Yu, Victoria Antoci, Christoph Bergmann, Timothy M. Brown, Andrew W. Howard, Michael J. Ireland, Howard Isaacson, Jon M. Jenkins, Hans Kjeldsen, Curtis McCully, Markus Rabus, Adam D. Rains, George R. Ricker, Christopher G. Tinney, Roland K. Vanderspek

Physics and Astronomy

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Abstract

Asteroseismology is a powerful tool for probing the internal structures of stars by using their natural pulsation frequencies. 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 delta 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 the regular patterns. Here we report the detection of remarkably regular sequences of high-frequency pulsation modes in 60 intermediate-mass main-sequence stars, allowing definitive mode identification. Some of these stars have space motions that indicate they are members of known associations of young stars, and modelling of their pulsation spectra confirms that these stars are indeed young.

Original language	English
Pages (from-to)	147-151
Journal	Nature
Volume	581
DOIs	https://doi.org/10.1038/s41586-020-2226-8
Publication status	Published - 13 May 2020

Keywords

astro-ph.SR

ASJC Scopus subject areas

General

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This is an accepted manuscript version of an article first published in Nature. The final version of record is available at https://doi.org/10.1038/s41586-020-2226-8
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Bedding, T. R., Murphy, S. J., Hey, D. R., Huber, D., Li, T., Smalley, B., Stello, D., White, T. R., Ball, W. H., Chaplin, W. J., Colman, I. L., Fuller, J., Gaidos, E., Harbeck, D. R., Hermes, J. J., Holdsworth, D. L., Li, G., Li, Y., Mann, A. W., ... Vanderspek, R. K. (2020). Very regular high-frequency pulsation modes in young intermediate-mass stars. Nature, 581, 147-151. https://doi.org/10.1038/s41586-020-2226-8

@article{4f0118c00c3d4ef69b531dfffb075106,

title = "Very regular high-frequency pulsation modes in young intermediate-mass stars",

abstract = "Asteroseismology is a powerful tool for probing the internal structures of stars by using their natural pulsation frequencies. 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 delta 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 the regular patterns. Here we report the detection of remarkably regular sequences of high-frequency pulsation modes in 60 intermediate-mass main-sequence stars, allowing definitive mode identification. Some of these stars have space motions that indicate they are members of known associations of young stars, and modelling of their pulsation spectra confirms that these stars are indeed young.",

keywords = "astro-ph.SR",

author = "Bedding, {Timothy R.} and Murphy, {Simon J.} and Hey, {Daniel R.} and Daniel Huber and Tanda Li and Barry Smalley and Dennis Stello and White, {Timothy R.} and Ball, {Warrick H.} and Chaplin, {William J.} and Colman, {Isabel L.} and Jim Fuller and Eric Gaidos and Harbeck, {Daniel R.} and Hermes, {J. J.} and Holdsworth, {Daniel L.} and Gang Li and Yaguang Li and Mann, {Andrew W.} and Reese, {Daniel R.} and Sanjay Sekaran and Jie Yu and Victoria Antoci and Christoph Bergmann and Brown, {Timothy M.} and Howard, {Andrew W.} and Ireland, {Michael J.} and Howard Isaacson and Jenkins, {Jon M.} and Hans Kjeldsen and Curtis McCully and Markus Rabus and Rains, {Adam D.} and Ricker, {George R.} and Tinney, {Christopher G.} and Vanderspek, {Roland K.}",

year = "2020",

month = may,

day = "13",

doi = "10.1038/s41586-020-2226-8",

language = "English",

volume = "581",

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Bedding, TR, Murphy, SJ, Hey, DR, Huber, D, Li, T, Smalley, B, Stello, D, White, TR, Ball, WH , Chaplin, WJ, Colman, IL, Fuller, J, Gaidos, E, Harbeck, DR, Hermes, JJ, Holdsworth, DL, Li, G, Li, Y, Mann, AW, Reese, DR, Sekaran, S, Yu, J, Antoci, V, Bergmann, C, Brown, TM, Howard, AW, Ireland, MJ, Isaacson, H, Jenkins, JM, Kjeldsen, H, McCully, C, Rabus, M, Rains, AD, Ricker, GR, Tinney, CG & Vanderspek, RK 2020, 'Very regular high-frequency pulsation modes in young intermediate-mass stars', Nature, vol. 581, pp. 147-151. https://doi.org/10.1038/s41586-020-2226-8

TY - JOUR

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AU - Bedding, Timothy R.

AU - Murphy, Simon J.

AU - Hey, Daniel R.

AU - Huber, Daniel

AU - Li, Tanda

AU - Smalley, Barry

AU - Stello, Dennis

AU - White, Timothy R.

AU - Ball, Warrick H.

AU - Chaplin, William J.

AU - Colman, Isabel L.

AU - Fuller, Jim

AU - Gaidos, Eric

AU - Harbeck, Daniel R.

AU - Hermes, J. J.

AU - Holdsworth, Daniel L.

AU - Li, Gang

AU - Li, Yaguang

AU - Mann, Andrew W.

AU - Reese, Daniel R.

AU - Sekaran, Sanjay

AU - Yu, Jie

AU - Antoci, Victoria

AU - Bergmann, Christoph

AU - Brown, Timothy M.

AU - Howard, Andrew W.

AU - Ireland, Michael J.

AU - Isaacson, Howard

AU - Jenkins, Jon M.

AU - Kjeldsen, Hans

AU - McCully, Curtis

AU - Rabus, Markus

AU - Rains, Adam D.

AU - Ricker, George R.

AU - Tinney, Christopher G.

AU - Vanderspek, Roland K.

PY - 2020/5/13

Y1 - 2020/5/13

N2 - Asteroseismology is a powerful tool for probing the internal structures of stars by using their natural pulsation frequencies. 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 delta 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 the regular patterns. Here we report the detection of remarkably regular sequences of high-frequency pulsation modes in 60 intermediate-mass main-sequence stars, allowing definitive mode identification. Some of these stars have space motions that indicate they are members of known associations of young stars, and modelling of their pulsation spectra confirms that these stars are indeed young.

AB - Asteroseismology is a powerful tool for probing the internal structures of stars by using their natural pulsation frequencies. 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 delta 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 the regular patterns. Here we report the detection of remarkably regular sequences of high-frequency pulsation modes in 60 intermediate-mass main-sequence stars, allowing definitive mode identification. Some of these stars have space motions that indicate they are members of known associations of young stars, and modelling of their pulsation spectra confirms that these stars are indeed young.

KW - astro-ph.SR

UR - http://www.scopus.com/inward/record.url?scp=85084627221&partnerID=8YFLogxK

U2 - 10.1038/s41586-020-2226-8

DO - 10.1038/s41586-020-2226-8

M3 - Article

SN - 0028-0836

VL - 581

SP - 147

EP - 151

JO - Nature

JF - Nature

ER -

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

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