Zobrazeno 1 - 10
of 195
pro vyhledávání: '"Gallino, Roberto"'
Autor:
Liu, Nan, Stephan, Thomas, Cristallo, Sergio, Vescovi, Diego, Gallino, Roberto, Nittler, Larry R., Alexander, Conel M. O' D., Davis, Andrew M.
Publikováno v:
European Physical Journal A, 58, 216 (2022)
We report the Sr and Ba isotopic compositions of 18 presolar SiC grains of types Y (11) and Z (7), rare types commonly argued to have formed in lower-than-solar metallicity asymptotic giant branch (AGB) stars. We find that the Y and Z grains show hig
Externí odkaz:
http://arxiv.org/abs/2209.10347
Autor:
Liu, Nan, Stephan, Thomas, Cristallo, Sergio, Gallino, Roberto, Boehnke, Patrick, Nittler, Larry R., Alexander, Conel M. O. 'D., Davis, Andrew M., Trappitsch, Reto, Pellin, Michael J., Dillmann, Iris
We report Mo isotopic compositions of 37 presolar SiC grains of types Y (19) and Z (18), rare types commonly argued to have formed in lower-than-solar metallicity asymptotic giant branch (AGB) stars. Direct comparison of the Y and Z grain data with d
Externí odkaz:
http://arxiv.org/abs/1906.10776
Autor:
Liu, Nan, Gallino, Roberto, Cristallo, Sergio, Bisterzo, Sara, Davis, Andrew M., Trappitsch, Reto, Nittler, Larry R.
We compare updated Torino postprocessing asymptotic giant branch (AGB) nucleosynthesis model calculations with isotopic compositions of mainstream SiC dust grains from low-mass AGB stars. Based on the data-model comparison, we provide new constraints
Externí odkaz:
http://arxiv.org/abs/1808.03614
Autor:
Gallino, Roberto1,2 (AUTHOR) robertogallino38@gmail.com
Publikováno v:
European Physical Journal A -- Hadrons & Nuclei. Apr2023, Vol. 59 Issue 4, p1-11. 11p.
Autor:
Bisterzo, Sara, Gallino, Roberto, Kaeppeler, Franz, Wiescher, Michael, Imbriani, Gianluca, Straniero, Oscar, Cristallo, Sergio, Goerres, Joachim, deBoer, Richard
Publikováno v:
Monthly Notices of the Royal Astronomical Society, 2015, Volume 449, Issue 1, p.506-527
This paper provides a detailed analysis of the main component of the slow neutron capture process (the s-process), which accounts for the solar abundances of half of the nuclei with 90 <~ A <~ 208. We examine the impact of the uncertainties of the tw
Externí odkaz:
http://arxiv.org/abs/1507.06798
Autor:
Liu, Nan, Davis, Andrew M., Gallino, Roberto, Savina, Michael R., Bisterzo, Sara, Gyngard, Frank, Pellin, Michael J., Dauphas, Nicolas
We identify three isotopic tracers that can be used to constrain the $^{13}C$-pocket and show the correlated isotopic ratios of Sr and Ba in single mainstream presolar SiC grains. These newly measured data can be explained by postprocess AGB model ca
Externí odkaz:
http://arxiv.org/abs/1502.02732
Autor:
Liu, Nan, Savina, Michael R., Gallino, Roberto, Davis, Andrew M., Bisterzo, Sara, Gyngard, Frank, Kaeppeler, Franz, Cristallo, Sergio, Dauphas, Nicolas, Pellin, Michael J., Dillmann, Iris
We present strontium, barium, carbon, and silicon isotopic compositions of 61 acid-cleaned presolar SiC grains from Murchison. Comparison with previous data shows that acid washing is highly effective in removing both strontium and barium contaminati
Externí odkaz:
http://arxiv.org/abs/1501.05883
Akademický článek
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Autor:
Liu, Nan, Gallino, Roberto, Bisterzo, Sara, Davis, Andrew M., Savina, Michael R., Pellin, Michael J.
We present postprocess AGB nucleosynthesis models with different $^{13}$C-pocket internal structures to better explain zirconium isotope measurements in mainstream presolar SiC grains by Nicolussi et al. (1997) and Barzyk et al. (2007). We show that
Externí odkaz:
http://arxiv.org/abs/1405.1441
Autor:
Liu, Nan, Savina, Michael R., Davis, Andrew M., Gallino, Roberto, Straniero, Oscar, Gyngard, Frank, Pellin, Michael J., Willingham, David G., Dauphas, Nicolas, Pignatari, Marco, Bisterzo, Sara, Cristallo, Sergio, Herwig, Falk
Publikováno v:
Liu, N., Savina, M. R., Davis, A. M., et al. 2014, ApJ, 786, 66
We present barium, carbon, and silicon isotopic compositions of 38 acid-cleaned presolar SiC grains from Murchison. Comparison with previous data shows that acid washing is highly effective in removing barium contamination. Strong depletions in $\del
Externí odkaz:
http://arxiv.org/abs/1403.4336