Zobrazeno 1 - 10
of 351
pro vyhledávání: '"Arentoft T."'
Autor:
Brogaard, K., Arentoft, T., Miglio, A., Casali, G., Thomsen, J. S., Tailo, M., Montalbán, J., Grisoni, V., Willett, E., Stokholm, A., Grundahl, F., Stello, D., Sandquist, E. L.
Publikováno v:
A&A 679, A23 (2023)
Asteroseismology of solar-like oscillations in giant stars allow the derivation of their masses and radii. For members of open clusters this allows an age estimate of the cluster which should be identical to the age estimate from the colour-magnitude
Externí odkaz:
http://arxiv.org/abs/2308.12731
Autor:
Brogaard, K., Arentoft, T., Slumstrup, D., Grundahl, F., Lund, M. N., Arndt, L., Grund, S., Rudrasingam, J., Theil, A., Christensen, K., Sejersen, M., Vorgod, F., Salmonsen, L., Endelt, L. Ørtoft, Dainese, S., Frandsen, S., Miglio, A., Tayar, J., Huber, D.
Publikováno v:
A&A 668, A82 (2022)
Eclipsing binary stars with an oscillating giant component allow accurate stellar parameters to be derived and asteroseismic methods to be tested and calibrated. To this aim, suitable systems need to be firstly identified and secondly measured precis
Externí odkaz:
http://arxiv.org/abs/2210.02059
Autor:
Campante T. L., Barclay T., Swift J. J., Huber D., Adibekyan V. Zh., Cochran W., Burke C. J., Isaacson H., Quintana E. V., Davies G. R., Silva Aguirre V., Ragozzine D., Riddle R., Baranec C., Basu S., Chaplin W. J., Christensen-Dalsgaard J., Metcalfe T. S., Bedding T. R., Handberg R., Stello D., Brewer J. M., Hekker S., Karoff C., Kolbl R., Law N. M., Lundkvist M., Miglio A., Rowe J. F., Santos N. C., Van Laerhoven C., Arentoft T., Elsworth Y. P., Fischer D. A., Kawaler S. D., Kjeldsen H., Lund M. N., Marcy G. W., Sousa S. G., Sozzetti A., White T. R.
Publikováno v:
EPJ Web of Conferences, Vol 101, p 02004 (2015)
The first discoveries of exoplanets around Sun-like stars have fueled efforts to find ever smaller worlds evocative of Earth and other terrestrial planets in the Solar System. While gas-giant planets appear to form preferentially around metal-rich st
Externí odkaz:
https://doaj.org/article/88d4a77566b74be7bc827926515b813e
We perform an asteroseismic investigation of giant stars in the field of NGC 6791 with previous indications of atypical evolution. The analysis makes use of observations from Kepler and Gaia in combination with ground-based photometry, a literature r
Externí odkaz:
http://arxiv.org/abs/2108.03869
Autor:
Brogaard, K., Grundahl, F., Sandquist, E. L., Slumstrup, D., Jensen, M. L., Thomsen, J. B., Jørgensen, J. H., Larsen, J. R., Bjørn, S. T., Sørensen, C. T. G., Bruntt, H., Arentoft, T., Frandsen, S., Jessen-Hansen, J., Orosz, J. A., Mathieu, R., Geller, A., Ryde, N., Stello, D., Meibom, S., Platais, I.
Publikováno v:
A&A 649, A178 (2021)
Models of stellar structure and evolution can be constrained using accurate measurements of the parameters of eclipsing binary members of open clusters. Multiple binary stars provide the means to tighten the constraints and, in turn, to improve the p
Externí odkaz:
http://arxiv.org/abs/2104.14330
Properties of the Hyades, the eclipsing binary HD27130, and the oscillating red giant $\epsilon$ Tau
Autor:
Brogaard, K., Pakštienė, E., Grundahl, F., Mikolaitis, Š., Tautvaišienė, G., Slumstrup, D., Talens, G. J. J., VandenBerg, D. A., Miglio, A., Arentoft, T., Kjeldsen, H., Janulis, R., Drazdauskas, A., Marchini, A., Minkevičiūtė, R., Stonkutė, E., Bagdonas, V., Andersen, M. Fredslund, Jessen-Hansen, J., Pallé, P. L., Dorval, P., Snellen, I. A. G., Otten, G. P. P. L., White, T. R.
Publikováno v:
A&A 645, A25 (2021)
Eclipsing binary stars allow derivation of accurate and precise masses and radii. When they reside in star clusters, properties of even higher precision, along with additional information, can be extracted. Asteroseismology of solar-like oscillations
Externí odkaz:
http://arxiv.org/abs/2011.02274
Extremely precise age and metallicity of the open cluster NGC 2506 using detached eclipsing binaries
Autor:
Knudstrup, E., Grundahl, F., Brogaard, K., Slumstrup, D., Orosz, J. A., Sandquist, E. L., Jessen-Hansen, J., Lund, M. N., Arentoft, T., Tronsgaard, R., Yong, D., Frandsen, S., Bruntt, H.
Accurate stellar parameters of stars in open clusters can help constrain models of stellar structure and evolution. Here we wish to determine the age and metallicity content of the open cluster NGC 2506. To this end we investigated three detached ecl
Externí odkaz:
http://arxiv.org/abs/2009.08788
Autor:
Andersen, M. Fredslund, Pallé, P., Jessen-Hansen, J., Wang, K., Grundahl, F., Bedding, T. R., Cortes, T. Roca, Yu, J., Mathur, S., Gacia, R. A., Arentoft, T., Régulo, C., Tronsgaard, R., Kjeldsen, H., Christensen-Dalsgaard, J.
Publikováno v:
A&A 623, L9 (2019)
Context. We present the first high-cadence multi-wavelength radial-velocity observations of the Sun-as-a-star, carried out during 57 consecutive days using the stellar \'echelle spectrograph at the Hertzsprung SONG Telescope operating at the Teide Ob
Externí odkaz:
http://arxiv.org/abs/1902.10717
Autor:
Brogaard, K., Christiansen, S. M., Grundahl, F., Miglio, A., Izzard, R. G., Tauris, T. M., Sandquist, E. L., VandenBerg, D. A., Jessen-Hansen, J., Arentoft, T., Bruntt, H., Frandsen, S., Orosz, J. A., Feiden, G. A., Mathieu, R., Geller, A., Shetrone, M., Ryde, N., Stello, D., Platais, I., Meibom, S.
We determine the properties of the binary star V106 in the old open cluster NGC6791. We identify the system to be a blue straggler cluster member by using a combination of ground-based and Kepler photometry and multi-epoch spectroscopy. The propertie
Externí odkaz:
http://arxiv.org/abs/1809.00705
Autor:
Frandsen, S., Andersen, M. Fredslund, Brogaard, K., Jiang, C., Arentoft, T., Grundahl, F., Kjeldsen, H., Christensen-Dalsgaard, J., Weiss, E., Pallé, P., Antoci, V., Kjærgaard, P., Sørensen, A. N., Skottfelt, J., Jørgensen, U. G.
Publikováno v:
A&A, 613, A53, 2018
The Stellar Observation Network Group (SONG) is an initiative to build a worldwide network of 1m telescopes with highprecision radial-velocity spectrographs. Here we analyse the first radial-velocity time series of a red-giant star measured by the SO
Externí odkaz:
http://arxiv.org/abs/1806.02095