Elemental abundances associated with gamma-ray bursts: nucleosynthesis in outflows

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Volume 578 (June 2015)

A&A, 578 (2015) A132

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Issue		A&A Volume 578, June 2015


Article Number		A132
Number of page(s)		37
Section		Astrophysical processes
DOI		https://doi.org/10.1051/0004-6361/201425167
Published online		16 June 2015

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Table 1

Key parameters and mass fractions of nuclides (selected from the top 50 species) produced in collapsar accretions for cases A1-3 and B1-3.

Table 2

Final mass fractions of explosive nucleosynthesis in the outflows associated with GRBs at r = 3r_sch for cases A1-3 and B1-3.

Table 3

As Table 2, but for cases A1-3 and B1-3 at r = 10r_sch.

Table 4

As Table 2, but for cases A1-3 and B1-3 at r = 20r_sch.

Table 5

As Table 2, but for cases A1-3 and B1-3 at r = 30r_sch.

Table 6

As Table 2, but for cases A1-3 and B1-3 at r = 40r_sch.

Table 7

As Table 2, but for cases A1-3 and B1-3 at r = 50r_sch.

Table 8

Total yields after radioactive decays in the final step t_f for 1 M_⊙ matter ejected from outflows associated with GRBs.

	Fig. 3 Explosive nucleosynthesis in the outflow region associated with GRB for case A1 at r = 3r_sch (case A1_r = 3). The radioactive decays have been taken into account within the dynamic process [ t₀,t_f), but did not include the final step (t_f), which can prevent some decayed species, as shown in this picture, from precipitously dropping to zero in the final step t_f.
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	Fig. 3 continued.
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	Fig. 3 continued.
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	Fig. 4 As Fig. 3, but for case A1 at r = 50r_sch (case A1_r = 50). It only shows the long (relative) half-life species (τ_0.5> 1 day) by considering the timing of observations; the species with half-lives of τ_0.5 ≤ 1 day are not plotted. The final abundances of nuclides as shown in this figure (selected from Table 7) exceed 10^-11.
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	Fig. 5 Five up-species abundance increase when the value of collapsar accretion rate Ṁ increases in panels a)−c) in the left column and in panels d)−f) in the right column. The other five down-species abundances decrease as Ṁ increases. The abscissa is scaled in the value of Ṁ. In a same panel, the same colors denote the same chemical species.
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© ESO, 2015

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