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Very regular high-frequency pulsation modes in young intermediate-mass stars
- Source :
- Nature, Nature, Nature Publishing Group, 2020, 581 (7807), pp.147-151. ⟨10.1038/s41586-020-2226-8⟩, 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, Reese, D R, Sekaran, S, Yu, J, Antoci, V, Bergmann, C, Brown, T M, Howard, A W, Ireland, M J, Isaacson, H, Jenkins, J M, Kjeldsen, H, McCully, C, Rabus, M, Rains, A D, Ricker, G R, Tinney, C G & Vanderspek, R K 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, 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, Reese, D R, Sekaran, S, Yu, J, Antoci, V, Bergmann, C, Brown, T M, Howard, A W, Ireland, M J, Isaacson, H, Jenkins, J M, Kjeldsen, H, McCully, C, Rabus, M, Rains, A D, Ricker, G R, Tinney, C G & Vanderspek, R K 2020, ' Very regular high-frequency pulsation modes in young intermediate-mass stars ', Nature, vol. 581, no. 7807, pp. 147-151 . https://doi.org/10.1038/s41586-020-2226-8
- Publication Year :
- 2020
- Publisher :
- Nature Research, 2020.
-
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.<br />published in Nature https://www.nature.com/articles/s41586-020-2226-8
- Subjects :
- DELTA-SCUTI STARS
SPECTROSCOPIC SURVEY
Theoretical models
FOCUS IMAGING SPECTROGRAPH
FOS: Physical sciences
F500
Astrophysics
Astrophysics::Cosmology and Extragalactic Astrophysics
Q1
Space (mathematics)
01 natural sciences
Asteroseismology
Spectral line
AFRICAN LARGE TELESCOPE
QB460
0103 physical sciences
Astrophysics::Solar and Stellar Astrophysics
010303 astronomy & astrophysics
Solar and Stellar Astrophysics (astro-ph.SR)
Astrophysics::Galaxy Astrophysics
QB
Physics
[PHYS]Physics [physics]
RAPIDLY ROTATING STARS
Science & Technology
Multidisciplinary
010308 nuclear & particles physics
LAMBDA-BOOTIS STARS
AMPLITUDE
STELLAR PARAMETERS
Multidisciplinary Sciences
Stars
Astrophysics - Solar and Stellar Astrophysics
A-TYPE STARS
Science & Technology - Other Topics
Astrophysics::Earth and Planetary Astrophysics
VELOCITIES
Large group
[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Rapid rotation
QB799
Subjects
Details
- ISSN :
- 00280836, 14764679, and 14764687
- Database :
- OpenAIRE
- Journal :
- Nature, Nature, Nature Publishing Group, 2020, 581 (7807), pp.147-151. ⟨10.1038/s41586-020-2226-8⟩, 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, Reese, D R, Sekaran, S, Yu, J, Antoci, V, Bergmann, C, Brown, T M, Howard, A W, Ireland, M J, Isaacson, H, Jenkins, J M, Kjeldsen, H, McCully, C, Rabus, M, Rains, A D, Ricker, G R, Tinney, C G & Vanderspek, R K 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, 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, Reese, D R, Sekaran, S, Yu, J, Antoci, V, Bergmann, C, Brown, T M, Howard, A W, Ireland, M J, Isaacson, H, Jenkins, J M, Kjeldsen, H, McCully, C, Rabus, M, Rains, A D, Ricker, G R, Tinney, C G & Vanderspek, R K 2020, ' Very regular high-frequency pulsation modes in young intermediate-mass stars ', Nature, vol. 581, no. 7807, pp. 147-151 . https://doi.org/10.1038/s41586-020-2226-8
- Accession number :
- edsair.doi.dedup.....e200b3c71d6845089388b59f6eb7653a
- Full Text :
- https://doi.org/10.17615/yxr3-5y93