[PDF] Top 20 Neutron Capture Nucleosynthesis and the Chemical Evolution of Globular Clusters
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Neutron Capture Nucleosynthesis and the Chemical Evolution of Globular Clusters
... in globular clusters that have inter- and intra-cluster variation, with the examples of M4 (relative to M5) and M22, ...new chemical evolution code developed by the candidate, we tested models ... See full document
221
Neutrinos, Neutron Capture, and Fission Cycling: Consequences for Supernova Nucleosynthesis.
... The neutrino-driven wind environment forms out of the final stellar evolution- ary stages of a massive star. Stars with over ten times the mass of our own sun, M & 10 M , progress through the stages of stellar ... See full document
103
Chemical abundances and kinematic properties of Galactic globular clusters
... Figure 2.11: A comparison between the r- and s-process enrichment in M 75 (blue dots) and NGC 1851 (red dots). The figure clearly reveals the different enrichment history between the two GCs. 2.6 Summary In this chapter, ... See full document
116
Chemical evolution of neutron capture elements in our Galaxy and in the dwarf spheroidal galaxies of the Local Group
... low neutron density and moves along the valley of β ...the neutron capture process imposes certain features on the ”spectrum” of the heavy element ...certain neutron numbers N = 50, 82, 126 ... See full document
184
Stellar Evolution and Nucleosynthesis, Ryan, Norton
... collapsed neutron core which resists further compression, a rebounding shock-wave is set up that helps reverse the infall of the ...formed neutron star deposit some of the neutrino energy into the ...formed ... See full document
240
Dynamical formation of millisecond pulsars in globular clusters
... the neutron star surface. Such an evolution could lead to a much more complicated magnetic field structure for the MSPs in the GCs than in the case of the Galactic ... See full document
7
Spectroscopic identification of r-process nucleosynthesis in a double neutron-star merger
... and is consistent with predictions from theoretical models of merging NSs (e.g. 31 ). Moreover, the counterpart’s location does not appear to coincide with any globular cluster, which suggests a field origin for ... See full document
41
The first direct double neutron star merger detection: Implications for cosmic nucleosynthesis
... 5 We use the density of Milky Way equivalent galaxies of Abadie et al. (2010) to transform between different units. unrealistically large) pre-collapse field of ∼ 10 13 G. If such instabilities set in, matter is exposed ... See full document
11
CNO abundances in the globular clusters NGC 1851 and NGC 6752
... We now briefly discuss the two AGB stars. With or without the arbitrary shift in N abundance, these two objects have C +N+O values that lie between the canonical and anomalous RGB popula- tions. As no change in the C ... See full document
11
Sodium abundances of AGB and RGB stars in Galactic globular clusters
... their evolution paths and lifetimes, 2P stars that are born with a chemical composition above an initial He and Na abundances cut-o ff do not climb the AGB and evolve di- rectly towards the white dwarf ... See full document
12
Post-Collapse evolution of globular clusters
... Sugimoto and Bettwieser (1983, Bettwieser and Sugimoto 1984) found that the post-collapse expan- sion is unstable if the energy production is inefficient. In the unstable case, the central density showed an oscillation ... See full document
11
Determination of the neutron-capture rate of 17C for r-process nucleosynthesis
... Due to relativistic beam energies, the reaction products are extremely forward focused and moderately sized de- tectors are sufficient to perform 100% acceptance mea- surements. The reaction fragments were tracked ... See full document
10
Masses of globular clusters
... suitable stellar spectra for a range of velocity dispersions, comparing these with the cluster spectra and selecting the velocity dispersion giving the best match.[r] ... See full document
178
Young globular clusters in NGC1316
... We present multi-object spectroscopy of the inner zone of the globular cluster (GC) system associated with the intermediate-age merger remnant NGC 1316. Using the multi-object mode of the GMOS camera, we obtained ... See full document
19
The inner Galactic globular clusters
... Galactic globular clusters located towards the inner regions of the Milky Way have been historically neglected, mainly due to the difficulties caused by the presence of an elevated extinction by foreground ... See full document
5
Extended Structures in Globular Clusters
... 3.5 Conclusions We have searched the region surrounding the Milky Way globular cluster M2 for the presence of low surface brightness substructures, using deep wide-field imaging mosaics from MegaCam and DECam. We ... See full document
148
The structure and content of globular clusters
... constructing a model or a particular cluster. Further, the observational data required to limit the range of possible cluster models are listed. In Chapter III the[r] ... See full document
244
A Differential Study of Nucleosynthesis in Open Star Clusters
... Star Clusters I have noticed an increasing level of disappointment when aspiring amateur astronomers and casual stargazers have their first experience with a ... See full document
132
Fission and r-process nucleosynthesis in neutron star mergers
... the evolution of the energy with the deformation but also on the inertia due to the motion in the collective ...the neutron induced stellar reaction rates relevant for the r -process ...in neutron ... See full document
141
Measuring neutron capture rates on ILL-produced unstable isotopes (147Pm, 171Tm and 204Tl, and plans for 79Se and 163Ho) for nucleosynthesis studies
... the neutron capture rates of the branching point isotopes at stellar tempera- tures is critical for the s-process nucleosynthesis ...white neutron beam with activation in a quasi-stellar ... See full document
9
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