1999ApJ...511L..33I

Query : 1999ApJ...511L..33I

1999ApJ...511L..33I - Astrophys. J., 511, L33-L36 (1999/January-3)

Enrichment of the r-process element europium in the galactic halo.

ISHIMARU Y. and WANAJO S.

Abstract (from CDS):

We investigate the enrichment of europium, as a representative of r-process elements, in the Galactic halo. In present chemical evolution models, stars are assumed to be formed through shock processes by supernovae (SNe). The enrichment of the interstellar medium is calculated by a one-zone approach. The observed large dispersions in [Eu/Fe] for halo stars, converging with increasing metallicity, can be explained with our models. In addition, the mass range of SNe for the r-process site is constrained to be either stars of 8-10 or ≳30 M☉.

Abstract Copyright: ∼

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

Simbad objects: 6

goto Full paper

goto View the references in ADS

Number of rows : 6
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 SN 1997D SN* 04 11 01.00 -56 29 56.0       16.3   SNIIpec 184 1
2 SN 1994W SN* 12 02 10.92 +62 08 32.7     13.3     SNIInP 194 1
3 HD 115444 Pe* 13 16 42.4590842616 +36 22 52.692135420   9.77 8.97 8.3 7.88 G9V 252 0
4 HD 122563 Pe* 14 02 31.8455084952 +09 41 09.944391876 7.47 7.10 6.19 5.37 4.79 G8:III:Fe-5 920 0
5 HD 126238 Pe* 14 25 29.9571431040 -43 38 36.948515460   8.44 7.7 7.44   G3/8wF0/2 119 0
6 BPS CS 22892-0052 Pe* 22 17 01.6558764360 -16 39 27.051026544   14.03 13.20 13.06 12.19 KIIvw 472 0

To bookmark this query, right click on this link: simbad:objects in 1999ApJ...511L..33I and select 'bookmark this link' or equivalent in the popup menu