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| Query : 2013ApJ...766L..13A |
2013ApJ...766L..13A - Astrophys. J., 766, L13 (2013/March-3)
Explaining the Sr and Ba scatter in extremely metal-poor stars.
AOKI W., SUDA T., BOYD R.N., KAJINO T. and FAMIANO M.A.
Abstract (from CDS):
Compilations of abundances of strontium and barium in extremely metal-poor stars show that an apparent cutoff is observed for [Sr/Ba] at [Fe/H] < -3.6 and large fluctuations for [Fe/H] > -3.6 with a clear upper bound depending on metallicity. We study the factors that place upper limits on the logarithmic ratio [Sr/Ba]. A model is developed in which the collapses of type II supernovae are found to reproduce many of the features seen in the data. This model is consistent with galactic chemical evolution constraints of light-element enrichment in metal-poor stars. Effects of turbulence in an explosive site have also been simulated, and are found to be important in explaining the large scatter observed in the [Sr/Ba] data.
Abstract Copyright: ∼
Journal keyword(s): black hole physics - equation of state - Galaxy: evolution - nuclear reactions, nucleosynthesis, abundances - stars: Population II
CDS comments: Object CS 22885-296 is not in SIMBAD.
Simbad objects: 11
| Number of rows : 11 |
| N | Identifier | Otype |
ICRS (J2000) RA |
ICRS (J2000) DEC |
Mag U | Mag B | Mag V | Mag R | Mag I | Sp type |
#ref
1850 - 2026 |
#notes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | HE 0029-1839 | Pe* | 00 32 07.7474784456 | -18 22 36.813769212 | 15.207 | 14.493 | 14.044 | 13.579 | ~ | 7 | 0 | |
| 2 | CD-38 245 | Pe* | 00 46 36.1954514592 | -37 39 33.555030480 | 12.733 | 11.929 | 13.39 | 10.996 | KIIvw | 233 | 0 | |
| 3 | BPS CS 22946-0011 | SB* | 01 19 11.6738109192 | -19 23 58.128899532 | 14.28 | 13.95 | ~ | 12 | 0 | |||
| 4 | HE 0305-4520 | Pe* | 03 07 02.1830563320 | -45 09 00.542787120 | 14.791 | 13.979 | 13.473 | 12.973 | ~ | 10 | 0 | |
| 5 | 2MASS J03142084-1035112 | Pe* | 03 14 20.8495451808 | -10 35 11.277788028 | 13.54 | 12.73 | 12.204 | 11.693 | KIIvw | 73 | 0 | |
| 6 | BD+80 245 | Pe* | 08 11 06.2398198478 | +79 54 29.556322137 | 10.50 | 9.96 | 9.88 | G0 | 123 | 0 | ||
| 7 | 2MASS J20353125-1553306 | Pe* | 20 35 31.2592395984 | -15 53 30.715762344 | 14.45 | 14.0 | ~ | 17 | 0 | |||
| 8 | 2MASS J20452353-2842359 | Pe* | 20 45 23.5333400256 | -28 42 35.912310048 | 14.89 | 14.03 | 13.328 | 12.844 | ~ | 37 | 0 | |
| 9 | BPS CS 30322-0023 | Pe* | 21 30 32.1818994960 | -46 16 24.614480388 | 13.447 | 12.167 | 11.902 | 10.908 | CEMP-s | 59 | 0 | |
| 10 | HE 2156-3130 | Pe* | 21 59 05.7785512872 | -31 16 12.133723836 | 14.86 | 14.07 | 13.523 | 13.011 | CEMP-no | 20 | 0 | |
| 11 | BPS CS 22941-0005 | SB* | 23 29 52.8373943808 | -35 13 03.812271564 | 14.88 | 14.61 | ~ | 10 | 0 |
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