Zobrazeno 1 - 10
of 356
pro vyhledávání: '"Farouqi, K"'
Autor:
Hill, V., Christlieb, N., Beers, T. C., Barklem, P. S., Kratz, K. -L., Nordström, B., Pfeiffer, B., Farouqi, K.
Publikováno v:
A&A 607, A91 (2017)
We report an abundance analysis for the highly r-process-enhanced (r-II) star CS 29497-004, a very metal-poor giant with Teff = 5013K and [Fe/H]=-2.85, whose nature was initially discovered in the course of the HERES project. Our analysis is based on
Externí odkaz:
http://arxiv.org/abs/1608.07463
Publikováno v:
AIP Conference Proceedings 1595, 62 (2014)
Still today, the nucleosynthesis origin of Xe-H in presolar nanodiamonds is far from understood. Historically, possible explanations were proposed by a secondary "neutron-burst" process occurring in the He- or C/O-shells of a type-II supernova (SN-II
Externí odkaz:
http://arxiv.org/abs/1406.0725
Autor:
Hosmer, P., Schatz, H., Aprahamian, A., Arndt, O., Clement, R. R. C., Estrade, A., Farouqi, K., Kratz, K. -L., Liddick, S. N., Lisetskiy, A. F., Mantica, P. F., Möller, P., Mueller, W. F., Montes, F., Morton, A. C., Ouellette, M., Pellegrini, E., Pereira, J., Pfeiffer, B., Reeder, P., Santi, P., Steiner, M., Stolz, A., Tomlin, B. E., Walters, W. B., Wöhr, A.
Publikováno v:
Phys.Rev.C82:025806,2010
The {\beta} decays of very neutron-rich nuclides in the Co-Zn region were studied experimentally at the National Superconducting Cyclotron Laboratory using the NSCL {\beta}-counting station in conjunction with the neutron detector NERO. We measured t
Externí odkaz:
http://arxiv.org/abs/1011.5255
Autor:
Roederer, I. U., Cowan, J. J., Karakas, A. I., Kratz, K. -L., Lugaro, M., Simmerer, J., Farouqi, K., Sneden, C.
To better characterize the abundance patterns produced by the r-process, we have derived new abundances or upper limits for the heavy elements zinc (Zn), yttrium (Y), lanthanum (La), europium (Eu), and lead (Pb). Our sample of 161 metal-poor stars in
Externí odkaz:
http://arxiv.org/abs/1009.4496
The astrophysical site of the r-process is still uncertain, and a full exploration of the systematics of this process in terms of its dependence on nuclear properties from stability to the neutron drip-line within realistic stellar environments has s
Externí odkaz:
http://arxiv.org/abs/1002.2346
Autor:
Hayek, W., Wiesendahl, U., Christlieb, N., Eriksson, K., Korn, A. J., Barklem, P. S., Hill, V., Beers, T. C., Farouqi, K., Pfeiffer, B., Kratz, K. -L.
Publikováno v:
Astron.Astrophys.504:511-524,2009
We report on a detailed abundance analysis of two strongly r-process enhanced, very metal-poor stars newly discovered in the HERES project, CS 29491-069 ([Fe/H]=-2.51, [r/Fe]=+1.1) and HE 1219-0312 ([Fe/H]=-2.96, [r/Fe]=+1.5). The analysis is based o
Externí odkaz:
http://arxiv.org/abs/0910.0707
We have performed large-scale nucleosynthesis calculations within the high-entropy-wind (HEW) scenario of type II supernovae. The primary aim was to constrain the conditions for the production of the classical "p-only" isotopes of the light trans-Fe
Externí odkaz:
http://arxiv.org/abs/0906.1076
Autor:
Farouqi, K., Kratz, K. -L., Mashonkina, L. I., Pfeiffer, B., Cowan, J. J, Thielemann, F. -K., Truran, J. W.
While the high-entropy wind (HEW) of Type II supernovae remains one of the more promising sites for the rapid neutron-capture (r-) process, hydrodynamic simulations have yet to reproduce the astrophysical conditions under which the latter occurs. We
Externí odkaz:
http://arxiv.org/abs/0901.2541
Autor:
Montes, F., Beers, T. C., Cowan, J., Elliot, T., Farouqi, K., Gallino, R., Heil, M., Kratz, K. -L., Pfeiffer, B., Pignatari, M., Schatz, H.
Recent observations of r-process-enriched metal-poor star abundances reveal a non-uniform abundance pattern for elements $Z\leq47$. Based on non-correlation trends between elemental abundances as a function of Eu-richness in a large sample of metal-p
Externí odkaz:
http://arxiv.org/abs/0709.0417
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.