Zobrazeno 1 - 10
of 2 744
pro vyhledávání: '"W, Den"'
Publikováno v:
2022, A&A 664, L16
Context: Asteroseismic measurements of the internal rotation of evolved stars indicate that at least one unknown efficient angular momentum (AM) transport mechanism is needed in stellar radiative zones. Aims: We investigate the impact of AM transport
Externí odkaz:
http://arxiv.org/abs/2309.17396
Autor:
Hartogh, J. W. den, López, A. Yagüe, Cseh, B., Pignatari, M., Világos, B., Roriz, M. P., Pereira, C. B., Drake, N. A., Junqueira, S., Lugaro, M.
Publikováno v:
A&A 672, A143 (2023)
We aim to analyse the abundance pattern of 169 Barium (Ba) stars, using machine learning techniques and the AGB final surface abundances predicted by Fruity and Monash stellar models. We developed machine learning algorithms that use the abundance pa
Externí odkaz:
http://arxiv.org/abs/2212.03593
Autor:
D'Andrea, M., Ravensberg, K., Argan, A., Brienza, D., Lotti, S., Macculi, C., Minervini, G., Piro, L., Torrioli, G., Chiarello, F., Barusso, L. Ferrari, Biasotti, M., Gallucci, G., Gatti, F., Rigano, M., Akamatsu, H., Dercksen, J., Gottardi, L., de Groote, F., Hartog, R. den, Herder, J. -W. den, Hoogeveen, R., Jackson, B., McCalden, A., Rosman, S., Taralli, E., Vaccaro, D., de Wit, M., Chervenak, J., Smith, S., Wakeham, N.
The X-IFU is the cryogenic spectrometer onboard the future ATHENA X-ray observatory. It is based on a large array of TES microcalorimeters, which works in combination with a Cryogenic AntiCoincidence detector (CryoAC). This is necessary to reduce the
Externí odkaz:
http://arxiv.org/abs/2206.15150
Autor:
López, A. Yagüe, García-Hernández, D. A., Ventura, P., Doherty, C. L., Hartogh, J. W. den, Jones, S. W., Lugaro, M.
Publikováno v:
A&A 657, A28 (2022)
Aims. We describe the first s-process post-processing models for asymptotic giant branch (AGB) stars of masses 3, 4 and 5 M at solar metallicity (Z=0.018) computed using the input from the stellar evolutionary code aton. Methods. The models are compu
Externí odkaz:
http://arxiv.org/abs/2110.08035
Autor:
Diehl, Roland, Lugaro, Maria, Heger, Alexander, Sieverding, Andre, Tang, Xiaodong, Li, KuoAng, Li, Ertao, Doherty, Carolyn L., Krause, Martin G. H., Wallner, Anton, Prantzos, Nikos, Brinkman, Hannah E., Hartogh, Jaqueline W. den, Wehmeyer, Benjamin, López, Andrés Yagüe, Pleintinger, Moritz M. M., Banerjee, Projjval, Wang, Wei
Publikováno v:
Publications of the Astronomical Society of Australia , Volume 38 , 2021 , e062
The cosmic evolution of the chemical elements from the Big Bang to the present time is driven by nuclear fusion reactions inside stars and stellar explosions. A cycle of matter recurrently re-processes metal-enriched stellar ejecta into the next gene
Externí odkaz:
http://arxiv.org/abs/2109.08558
Radioactive nuclei were present in the early Solar System, as inferred from analysis of meteorites. Many are produced in massive stars, either during their lives or their final explosions. In the first paper in this series (Brinkman et al. 2019), we
Externí odkaz:
http://arxiv.org/abs/2109.05842
Autor:
Jeroen Koomen, Xuchuan Ma, Alberto Bombelli, Marcel H. Tempelaars, Sjef Boeren, Marcel H. Zwietering, Heidy M. W. den Besten, Tjakko Abee
Publikováno v:
Frontiers in Microbiology, Vol 15 (2024)
Multiple stress resistant variants of Listeria monocytogenes with mutations in rpsU encoding ribosomal protein RpsU have previously been isolated after a single exposure to acid stress. These variants, including L. monocytogenes LO28 variant V14 with
Externí odkaz:
https://doaj.org/article/202d30111d1a4a5db8acc56a2e035eb2
Autor:
Xuchuan Ma, Marcel H. Tempelaars, Marcel H. Zwietering, Sjef Boeren, Conor P. O’Byrne, Heidy M. W. den Besten, Tjakko Abee
Publikováno v:
Frontiers in Microbiology, Vol 15 (2024)
Microbial population heterogeneity leads to different stress responses and growth behavior of individual cells in a population. Previously, a point mutation in the rpsU gene (rpsUG50C) encoding ribosomal protein S21 was identified in a Listeria monoc
Externí odkaz:
https://doaj.org/article/4441ef3782c74f6e84b8f01556024a3e
Publikováno v:
A&A 641, A117 (2020)
Asteroseismic measurements of the internal rotation of subgiants and red giants all show the need for invoking a more efficient transport of angular momentum than theoretically predicted. Constraints on the core rotation rate are available starting f
Externí odkaz:
http://arxiv.org/abs/2007.02585