Zobrazeno 1 - 10
of 43
pro vyhledávání: '"Timothy R. Bedding"'
Autor:
Timothy R. Bedding, Daniel Huber, Jie Yu, Shourya Khanna, Dennis Stello, Shaolan Bi, S. Hekker, Laurent Gizon
Publikováno v:
Yu, J, Hekker, S, Bedding, T R, Stello, D, Huber, D, Gizon, L, Khanna, S & Bi, S 2021, ' Asteroseismology of luminous red giants with Kepler-II. Dependence of mass-loss on pulsations and radiation ', Monthly Notices of the Royal Astronomical Society, vol. 501, no. 4, pp. 5135-5148 . https://doi.org/10.1093/mnras/staa3970
Monthly Notices of the Royal Astronomical Society, 501, 5135-5148. Oxford University Press
Monthly Notices of the Royal Astronomical Society, 501, 5135-5148. Oxford University Press
Mass loss by red giants is an important process to understand the final stages of stellar evolution and the chemical enrichment of the interstellar medium. Mass-loss rates are thought to be controlled by pulsation-enhanced dust-driven outflows. Here
Autor:
Daniel Huber, Andrew Tkachenko, Isabel L. Colman, Jie Yu, Simon J. Murphy, Soetkin Janssens, Timothy R. Bedding, S. Sekaran, Tanda Li, Tinatin Baratashvili, Daniel R. Hey
Publikováno v:
Monthly Notices of the Royal Astronomical Society
We study the $\delta$ Scuti -- red giant binary KIC9773821, the first double-pulsator binary of its kind. It was observed by \textit{Kepler} during its four-year mission. Our aims are to ascertain whether the system is bound, rather than a chance ali
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4a5a741c2bf94dce345840314a314e1d
https://lirias.kuleuven.be/handle/123456789/679214
https://lirias.kuleuven.be/handle/123456789/679214
Publikováno v:
Murphy, S J, Barbara, N H, Hey, D, Bedding, T R & Fulcher, B D 2021, ' Finding binaries from phase modulation of pulsating stars with Kepler –VI. Orbits for 10 new binaries with mischaracterized primaries ', Monthly Notices of the Royal Astronomical Society, vol. 493, no. 4, pp. 5382-5388 . https://doi.org/10.1093/mnras/staa562
Measuring phase modulation in pulsating stars has proved to be a highly successful way of finding binary systems. The class of pulsating main-sequence A and F variables known as delta Scuti stars are particularly good targets for this, and the \texti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::72a6bf1b06da3f37f1039d67aa234658
https://pure.au.dk/portal/da/publications/finding-binaries-from-phase-modulation-of-pulsating-stars-with-kepler-vi-orbits-for-10-new-binaries-with-mischaracterized-primaries(762853a6-dcf5-472b-a657-843f679f7b0b).html
https://pure.au.dk/portal/da/publications/finding-binaries-from-phase-modulation-of-pulsating-stars-with-kepler-vi-orbits-for-10-new-binaries-with-mischaracterized-primaries(762853a6-dcf5-472b-a657-843f679f7b0b).html
Autor:
Timothy R. Bedding, Daniel Luke Holdsworth, Benjamin J. Fulton, Simon J. Murphy, Daniel Huber, Margarida S. Cunha, Daniel R. Hey, D. W. Kurtz, Andrew W. Howard
Publikováno v:
Hey, D R, Holdsworth, D L, Bedding, T R, Murphy, S J, Cunha, M S, Kurtz, D W, Huber, D, Fulton, B & Howard, A W 2019, ' Six new rapidly oscillating Ap stars in the Kepler long-cadence data using super-Nyquist asteroseismology ', Monthly Notices of the Royal Astronomical Society, vol. 488, no. 1, pp. 18-36 . https://doi.org/10.1093/mnras/stz1633
We perform a search for rapidly oscillating Ap stars in the Kepler long-cadence data, where true oscillations above the Nyquist limit of 283.21 {\mu}Hz can be reliably distinguished from aliases as a consequence of the barycentric time corrections ap
Publikováno v:
Compton, D L, Bedding, T R & Stello, D 2019, ' Asteroseismology of main-sequence F stars with Kepler : Overcoming short mode lifetimes ', Monthly Notices of the Royal Astronomical Society, vol. 485, no. 1, pp. 560-569 . https://doi.org/10.1093/mnras/stz432
Asteroseismology is a powerful way of determining stellar parameters and properties of stars like the Sun. However, main-sequence F-type stars exhibit short mode lifetimes relative to their oscillation frequency, resulting in overlapping radial and q
Autor:
Tanda Li, Jørgen Christensen-Dalsgaard, Licai Deng, Timothy R. Bedding, Dennis Stello, Hans Kjeldsen
Publikováno v:
Li, T, Bedding, T R, Kjeldsen, H, Stello, D, Christensen-Dalsgaard, J & Deng, L 2019, ' Asteroseismic modelling of the subgiant μ Herculis using SONG data: lifting the degeneracy between age and model input parameters ', Monthly Notices of the Royal Astronomical Society, vol. 483, no. 1, pp. 780-789 . https://doi.org/10.1093/mnras/sty3000
We model the oscillations of the SONG target $\mu$ Herculis to estimate the parameters of the star. The $\ell$ = 1 mixed modes of $\mu$ Her provide strong constraints on stellar properties. The mass and age given by our asteroseismic modelling are 1.
Autor:
Zhao Guo, Jim Fuller, Simon J. Murphy, Gang Li, Timothy R. Bedding, Isabel L. Colman, Daniel R. Hey
Publikováno v:
Li, G, Guo, Z, Fuller, J, Bedding, T R, Murphy, S J, Colman, I L & Hey, D R 2020, ' The effect of tides on near-core rotation : analysis of 35 Kepler γDoradus stars in eclipsing and spectroscopic binaries ', Monthly Notices of the Royal Astronomical Society, vol. 497, no. 4, pp. 4363-4375 . https://doi.org/10.1093/mnras/staa2266
We systematically searched for gravity- and Rossby-mode period spacing patterns in Kepler eclipsing binaries with $\gamma$ Doradus pulsators. These stars provide an excellent opportunity to test the theory of tidal synchronisation and angular momentu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a0930261fff49a1f44e8a7daa6e6b69f
https://pure.au.dk/portal/da/publications/the-effect-of-tides-on-nearcore-rotation(1f39dc51-81ee-40d9-8b87-561e387afcea).html
https://pure.au.dk/portal/da/publications/the-effect-of-tides-on-nearcore-rotation(1f39dc51-81ee-40d9-8b87-561e387afcea).html
Autor:
Shaolan Bi, Dennis Stello, Timothy R. Bedding, Timothy R. White, Yixiao Zhou, Yaguang Li, Tanda Li
Publikováno v:
Li, Y, Bedding, T R, Li, T, Bi, S, Stello, D, Zhou, Y & White, T R 2020, ' Asteroseismology of 36 Kepler subgiants – I. Oscillation frequencies, linewidths, and amplitudes ', Monthly Notices of the Royal Astronomical Society, vol. 495, no. 2, pp. 2363-2386 . https://doi.org/10.1093/MNRAS/STAA1335
The presence of mixed modes makes subgiants excellent targets for asteroseismology, providing a probe for the internal structure of stars. Here we study 36 \emph{Kepler} subgiants with solar-like oscillations and report their oscillation mode paramet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a8100746e40a5371395bb1ac12a82da7
http://arxiv.org/abs/2005.06460
http://arxiv.org/abs/2005.06460
Autor:
Rhita-Maria Ouazzani, Gang Li, Timothy Van Reeth, Timothy R. Bedding, Nicholas H. Barbara, Victoria Antoci, Simon J. Murphy
Publikováno v:
Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2020, ⟨10.1093/mnras/stz2906⟩
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2020, 491 (3), pp.3586-3605. ⟨10.1093/mnras/stz2906⟩
Li, G, Van Reeth, T, Bedding, T R, Murphy, S J, Antoci, V, Ouazzani, R M & Barbara, N H 2020, ' Gravity-mode period spacings and near-core rotation rates of 611 γ Doradus stars with Kepler ', Monthly Notices of the Royal Astronomical Society, vol. 491, no. 3, pp. 3586-3605 . https://doi.org/10.1093/mnras/stz2906
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2020, ⟨10.1093/mnras/stz2906⟩
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2020, 491 (3), pp.3586-3605. ⟨10.1093/mnras/stz2906⟩
Li, G, Van Reeth, T, Bedding, T R, Murphy, S J, Antoci, V, Ouazzani, R M & Barbara, N H 2020, ' Gravity-mode period spacings and near-core rotation rates of 611 γ Doradus stars with Kepler ', Monthly Notices of the Royal Astronomical Society, vol. 491, no. 3, pp. 3586-3605 . https://doi.org/10.1093/mnras/stz2906
We report our survey of γ Dor stars from the 4-yr Kepler mission. These stars pulsate mainly in g modes and r modes, showing period-spacing patterns in the amplitude spectra. The period-spacing patterns are sensitive to the chemical composition grad
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4359323c7354a952f51e4db88a8e2e4f
https://hal.archives-ouvertes.fr/hal-03404574
https://hal.archives-ouvertes.fr/hal-03404574
Autor:
Sai Prathyusha Malla, Timothy R. Bedding, M. F. Andersen, Daniel Huber, Jens Jessen-Hansen, James Richard Lloyd, Daniel R. Hey, Frank Grundahl, Dennis Stello, Chunguang Zhang, Victoria Antoci, Pere L. Palle, Xiaodian Chen, Licai Deng, Benjamin T. Montet
Publikováno v:
Malla, S P, Stello, D, Huber, D, Montet, B T, Bedding, T R, Andersen, M F, Grundahl, F, Jessen-Hansen, J, Hey, D R, Palle, P L, Deng, L, Zhang, C, Chen, X, Lloyd, J R & Antoci, V L 2020, ' Asteroseismic masses of four evolved planet-hosting stars using SONG and TESS: resolving the retired A-star mass controversy ', Monthly Notices of the Royal Astronomical Society, vol. 496, no. 4, pp. 5423-5435 . https://doi.org/10.1093/mnras/staa1793
Malla, S P, Stello, D, Huber, D, Montet, B T, Bedding, T R, Andersen, M F, Grundahl, F, Jessen-Hansen, J, Hey, D R, Palle, P L, Deng, L, Zhang, C, Chen, X, Lloyd, J & Antoci, V 2020, ' Asteroseismic masses of four evolved planet-hosting stars using SONG and TESS : Resolving the retired A-star mass controversy ', Monthly Notices of the Royal Astronomical Society, vol. 496, no. 4, pp. 5423-5435 . https://doi.org/10.1093/mnras/staa1793
Malla, S P, Stello, D, Huber, D, Montet, B T, Bedding, T R, Andersen, M F, Grundahl, F, Jessen-Hansen, J, Hey, D R, Palle, P L, Deng, L, Zhang, C, Chen, X, Lloyd, J & Antoci, V 2020, ' Asteroseismic masses of four evolved planet-hosting stars using SONG and TESS : Resolving the retired A-star mass controversy ', Monthly Notices of the Royal Astronomical Society, vol. 496, no. 4, pp. 5423-5435 . https://doi.org/10.1093/mnras/staa1793
The study of planet occurrence as a function of stellar mass is important for a better understanding of planet formation. Estimating stellar mass, especially in the red giant regime, is difficult. In particular, stellar masses of a sample of evolved
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bae29dd77449892e908963a43f12ce4c
https://orbit.dtu.dk/en/publications/ee2c93c5-375a-4c74-8672-6d7a50fabb42
https://orbit.dtu.dk/en/publications/ee2c93c5-375a-4c74-8672-6d7a50fabb42