Zobrazeno 1 - 10
of 10
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:
James Esdaile, Valentina D'Orazi, Sanjib Sharma, Tomaz Zwitter, Joel C. Zinn, Shourya Khanna, Jonathan Horner, Marc Hon, Thomas Nordlander, Kenneth C. Freeman, Janez Kos, Yuan-Sen Ting, Jane Lin, Geraint F. Lewis, Michael R. Hayden, Jeffrey D. Simpson, Sarah L. Martell, Boquan Chen, Gayandhi M. De Silva, David M. Nataf, Rosemary F. G. Wyse, Mohd Hafiz Mohd Saadon, Thomas Kallinger, Daniel Huber, Martin Asplund, Daniel B. Zucker, Klemen Čotar, Karin Lind, Dennis Stello, Gregor Traven, Sven Buder, Prajwal R. Kafle, Timothy R. Bedding, Robert A. Wittenmyer, Joss Bland-Hawthorn, Tanda Li, Duncan J. Wright
Publikováno v:
Sharma, S, Stello, D, Bland-Hawthorn, J, Hayden, M R, Zinn, J C, Kallinger, T, Hon, M, Asplund, M, Buder, S, de Silva, G M, D'Orazi, V, Freeman, K, Kos, J, Lewis, G F, Lin, J, Lind, K, Martell, S, Simpson, J D, Wittenmyer, R A, Zucker, D B, Zwitter, T, Bedding, T R, Chen, B, Cotar, K, Esdaile, J, Horner, J, Huber, D, Kafle, P R, Khanna, S, Li, T, Ting, Y S, Nataf, D M, Nordlander, T, Saadon, M H M, Traven, G, Wright, D & Wyse, R F G 2019, ' The K2-HERMES survey : Age and metallicity of the thick disc ', Monthly Notices of the Royal Astronomical Society, vol. 490, no. 4, pp. 5335-5352 . https://doi.org/10.1093/mnras/stz2861
Asteroseismology is a promising tool to study Galactic structure and evolution because it can probe the ages of stars. Earlier attempts comparing seismic data from the {\it Kepler} satellite with predictions from Galaxy models found that the models p
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:
Timothy Van Reeth, Gang Li, Rhita-Maria Ouazzani, Victoria Antoci, Simon J. Murphy, Timothy R. Bedding
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, 2019, 482 (2), pp.1757-1785. ⟨10.1093/mnras/sty2743⟩
Li, G, Bedding, T R, Murphy, S J, Reeth, T V, Antoci, V & Ouazzani, R M 2019, ' Period spacings of γ Doradus pulsators in the Kepler field : Detection methods and application to 22 slow rotators ', Monthly Notices of the Royal Astronomical Society, vol. 482, no. 2, pp. 1757-1785 . https://doi.org/10.1093/mnras/sty2743
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2019, 482 (2), pp.1757-1785. ⟨10.1093/mnras/sty2743⟩
Li, G, Bedding, T R, Murphy, S J, Reeth, T V, Antoci, V & Ouazzani, R M 2019, ' Period spacings of γ Doradus pulsators in the Kepler field : Detection methods and application to 22 slow rotators ', Monthly Notices of the Royal Astronomical Society, vol. 482, no. 2, pp. 1757-1785 . https://doi.org/10.1093/mnras/sty2743
In $\gamma$ Doradus stars, the g-mode period spacing shows an approximately linear relation with period. The slope is a new asteroseismic diagnostic, related to the rotation rate and the azimuthal order $m$. We report two automated methods, the `movi
Autor:
Timothy R. Bedding, Tanda Li, Maosheng Xiang, Daniel Huber, Simon J. Murphy, Shaolan Bi, Jie Yu, Dennis Stello
Publikováno v:
Yu, J, Huber, D, Bedding, T R, Stello, D, Murphy, S J, Xiang, M, Bi, S & Li, T 2016, ' Asteroseismology of 1523 misclassified red giants using Kepler data ', Monthly Notices of the Royal Astronomical Society, vol. 463, no. 2, pp. 1297-1306 . https://doi.org/10.1093/mnras/stw2074
We analysed solar-like oscillations in 1523 $\textit{Kepler}$ red giants which have previously been misclassified as subgiants, with predicted $\nu_{\rm max}$ values (based on the Kepler Input Catalogue) between 280$\mu$Hz to 700$\mu$Hz. We report th
Autor:
Jørgen Christensen-Dalsgaard, Sarbani Basu, Luca Casagrande, V. Van Eylen, Ronald L. Gilliland, Rasmus Handberg, Guy R. Davies, Daniel Huber, Saskia Hekker, Steven D. Kawaler, Tiago L. Campante, William J. Chaplin, Silva Aguirre, Mia S. Lundkvist, Aldo Serenelli, Hans Kjeldsen, Travis S. Metcalfe, Yvonne Elsworth, Christoffer Karoff, Mikkel N. Lund, Timothy R. Bedding, O. L. Creevey, Dennis Stello, Poul Nissen
Publikováno v:
Silva Aguirre, V, Davies, G R, Basu, S, Christensen-Dalsgaard, J, Creevey, O, Metcalfe, T S, Bedding, T R, Casagrande, L, Handberg, R, Lund, M N, Nissen, P E, Chaplin, W J, Huber, D, Serenelli, A M, Stello, D, Van Eylen, V, Campante, T L, Elsworth, Y, Gilliland, R L, Hekker, S, Karoff, C, Kawaler, S D, Kjeldsen, H & Lundkvist, M S 2015, ' Ages and fundamental properties of Kepler exoplanet host stars from asteroseismology ', Royal Astronomical Society. Monthly Notices, vol. 452, no. 2, pp. 2127-2148 . https://doi.org/10.1093/mnras/stv1388
We present a study of 33 {\it Kepler} planet-candidate host stars for which asteroseismic observations have sufficiently high signal-to-noise ratio to allow extraction of individual pulsation frequencies. We implement a new Bayesian scheme that is fl
Publikováno v:
Murphy, S J, Bedding, T R, Niemczura, E, Kurtz, D W & Smalley, B 2015, ' A search for non-pulsating, chemically normal stars in the δ Scuti instability strip using Kepler data ', Royal Astronomical Society. Monthly Notices, vol. 447, no. 4, pp. 3948-3959 . https://doi.org/10.1093/mnras/stu2749
We identify stars in the $\delta$ Sct instability strip that do not pulsate in p modes at the 50-$\mu$mag limit, using Kepler data. Spectral classification and abundance analyses from high-resolution spectroscopy allow us to identify chemically pecul
Autor:
G. Lo Curto, Hans Bruntt, T. Arentoft, Fabien Carrier, T. H. Dall, P.-O. Quirion, Timothy R. Bedding, Michael Bazot, R. P. Butler, Barry Smalley
Publikováno v:
Monthly Notices of the Royal Astronomical Society.
We combine results from interferometry, asteroseismology and spectroscopy to determine accurate fundamental parameters of 23 bright solar-type stars, from spectral type F5 to K2 and luminosity classes III to V. For some stars we can use direct techni
Autor:
Z. J. Tian, Enrico Corsaro, Tanda Li, Shaolan Bi, Simon J. Murphy, Li Chen, Timothy R. Bedding, Yaguang Li
Publikováno v:
Li, Y, Bedding, T R, Li, T, Bi, S, Murphy, S J, Corsaro, E, Chen, L & Tian, Z 2018, ' Asteroseismology of KIC 7107778 : a binary comprising almost identical subgiants ', Royal Astronomical Society. Monthly Notices, vol. 476, no. 1, pp. 470-481 . https://doi.org/10.1093/mnras/sty222
Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society
We analyze an asteroseismic binary system: KIC 7107778, a non-eclipsing, unresolved target, with solar-like oscillations in both components. We used \emph{Kepler} short cadence time series spanning nearly two years to obtain the power spectrum. Oscil