Zobrazeno 1 - 10
of 1 702
pro vyhledávání: '"Kobayashi C."'
Publikováno v:
EPJ Web of Conferences, Vol 297, p 01016 (2024)
We run a three-dimensional Galactic chemical evolution (GCE) model to follow the propagation of 53Mn from supernovae of type Ia (SNIa), 60Fe from core-collapse supernovae (CCSNe), 182Hf from intermediate mass stars (IMSs), and 244Pu from neutron star
Externí odkaz:
https://doaj.org/article/6774f1a32d1847188bc1aaaea49bf527
Autor:
Yan, Y. T., Henkel, C., Kobayashi, C., Menten, K. M., Gong, Y., Zhang, J. S., Yu, H. Z., Yang, K., Xie, J. J., Wang, Y. X.
Publikováno v:
A&A 670, A98 (2023)
With the IRAM 30 meter telescope, we performed observations of the $J$ = 2-1 transitions of CS, C$^{33}$S, C$^{34}$S, C$^{36}$S, $^{13}$CS, $^{13}$C$^{33}$S, and $^{13}$C$^{34}$S as well as the $J$ = 3-2 transitions of C$^{33}$S, C$^{34}$S, C$^{36}$S
Externí odkaz:
http://arxiv.org/abs/2212.03252
Autor:
Lind, K., Nordlander, T., Wehrhahn, A., Montelius, M., Osorio, Y., Barklem, P. S., Afsar, M., Sneden, C., Kobayashi, C.
Publikováno v:
A&A 665, A33 (2022)
It is well known that cool star atmospheres depart from local thermodynamic equilibrium (LTE). Accurate abundance determination requires taking those effects into account, but the necessary non-LTE calculations are often lacking. Our goal is to provi
Externí odkaz:
http://arxiv.org/abs/2206.11070
Autor:
Dayal, P., Ferrara, A., Sommovigo, L., Bouwens, R., Oesch, P. A., Smit, R., Gonzalez, V., Schouws, S., Stefanon, M., Kobayashi, C., Bremer, J., Algera, H. S. B., Aravena, M., Bowler, R. A. A., da Cunha, E., Fudamoto, Y., Graziani, L., Hodge, J., Inami, H., De Looze, I., Pallottini, A., Riechers, D., Schneider, R., Stark, D., Endsley, R.
We include a fully coupled treatment of metal and dust enrichment into the Delphi semi-analytic model of galaxy formation to explain the dust content of 13 Lyman Break Galaxies (LBGs) detected by the Atacama Large millimetre Array (ALMA) REBELS Large
Externí odkaz:
http://arxiv.org/abs/2202.11118
Autor:
Franco, M., Coppin, K. E. K., Geach, J. E., Kobayashi, C., Chapman, S. C., Yang, C., González-Alfonso, E., Spilker, J. S., Cooray, A., Michałowski, M. J.
Fluorine is one of the most interesting elements for nuclear and stellar astrophysics. Fluorine abundance was first measured for stars other than the Sun in 1992, then for a handful metal-poor stars, which are likely to have formed in the early Unive
Externí odkaz:
http://arxiv.org/abs/2111.03074
Autor:
Cescutti, G., Morossi, C., Franchini, M., Di Marcantonio, P., Chiappini, C., Steffen, M., Valentini, M., François, P., Christlieb, N., Cortés, C., Kobayashi, C., Depagne, E.
Publikováno v:
A&A 654, A164 (2021)
Context. Theoretical results showed the possibility that neutron capture elements were produced in the early Universe by two different sources: a frequent s-process source hosted by rotating massive stars, and a rare r-process source hosted most like
Externí odkaz:
http://arxiv.org/abs/2109.00277
Autor:
Yong, D., Da Costa, G. S., Bessell, M. S., Chiti, A., Frebel, A., Gao, X., Lind, K., Mackey, A. D., Marino, A. F., Murphy, S. J., Nordlander, T., Asplund, M., Casey, A. R., Kobayashi, C., Norris, J. E., Schmidt, B. P.
We present chemical abundances for 21 elements (from Li to Eu) in 150 metal-poor Galactic stars spanning $-$4.1 $<$ [Fe/H] $<$ $-$2.1. The targets were selected from the SkyMapper survey and include 90 objects with [Fe/H] $\le$ $-$3 of which some 15
Externí odkaz:
http://arxiv.org/abs/2107.06430
Autor:
Yong, D., Kobayashi, C., Da Costa, G. S., Bessell, M. S., Chiti, A., Frebel, A., Lind, K., Mackey, A. D., Nordlander, T., Asplund, M., Casey, A. R., Marino, A. F., Murphy, S. J., Schmidt, B. P.
Neutron-star mergers were recently confirmed as sites of rapid-neutron-capture (r-process) nucleosynthesis. However, in Galactic chemical evolution models, neutron-star mergers alone cannot reproduce the observed element abundance patterns of extreme
Externí odkaz:
http://arxiv.org/abs/2107.03010
Autor:
Foster, C., Mendel, J. T., Lagos, C. D. P., Wisnioski, E., Yuan, T., D'Eugenio, F., Barone, T. M., Harborne, K. E., Vaughan, S. P., Schulze, F., Remus, R. -S., Gupta, A., Collacchioni, F., Khim, D. J., Taylor, P., Bassett, R., Croom, S. M., McDermid, R. M., Poci, A., Battisti, A. J., Bland-Hawthorn, J., Bellstedt, S., Colless, M., Davies, L. J. M., Derkenne, C., Driver, S., Ferré-Mateu, A., Fisher, D. B., Gjergo, E., Johnston, E. J., Khalid, A., Kobayashi, C., Oh, S., Peng, Y., Robotham, A. S. G., Sharda, P., Sweet, S. M., Taylor, E. N., Tran, K. -V. H., Trayford, J. W., van de Sande, J., Yi, S. K., Zanisi, L.
We present an overview of the Middle Ages Galaxy Properties with Integral Field Spectroscopy (MAGPI) survey, a Large Program on ESO/VLT. MAGPI is designed to study the physical drivers of galaxy transformation at a lookback time of 3-4 Gyr, during wh
Externí odkaz:
http://arxiv.org/abs/2011.13567
We present new fluorine abundance estimations in two carbon enhanced metal-poor (CEMP) stars, HE 1429-0551 and HE 1305+0007. HE 1429-0551 is also enriched in slow neutron-capture process (s-process) elements, a CEMP-s, and HE 1305+0007 is enhanced in
Externí odkaz:
http://arxiv.org/abs/2008.10136