2004ApJ...600L..47I

Query : 2004ApJ...600L..47I

2004ApJ...600L..47I - Astrophys. J., 600, L47-L50 (2004/January-1)

The detection of low Eu abundances in extremely metal-poor stars and the origin of r-process elements.

ISHIMARU Y., WANAJO S., AOKI W. and RYAN S.G.

Abstract (from CDS):

We report abundance analyses of three extremely metal-poor stars with [Fe/H]≲-3 using the Subaru High Dispersion Spectrograph. All are found to have subsolar values of [Eu/Fe]. Comparison with our chemical evolution model of the Galactic halo implies the dominant source of Eu to be the low-mass end of the supernova mass range. Future studies of stars with low Eu abundances will be important to determine the r-process site.

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Journal keyword(s): Galaxy: Evolution - Galaxy: Halo - Nuclear Reactions, Nucleosynthesis, Abundances - Stars: Abundances - Stars: Population II - Stars: Supernovae: General

Simbad objects: 3

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Number of rows : 3
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 HD 4306 SB* 00 45 27.1616035344 -09 32 39.785396712 9.80 9.75 9.02 8.75   G3/5w(A) 168 0
2 BPS CS 22878-0101 Pe* 16 45 31.4513454168 +08 14 45.470265900   14.601   13.603 12.673 KIIvw 62 0
3 BPS CS 22950-0046 Pe* 20 21 28.3975657104 -13 16 33.601931364   15.13 14.224 13.639 13.066 CEMP-no 43 0

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