1997A&A...322L..29G


Query : 1997A&A...322L..29G

1997A&A...322L..29G - Astronomy and Astrophysics, volume 322, L29-32 (1997/6-3)

What can we learn from the r-element distribution of CS 22892-052?

GORIELY S. and ARNOULD M.

Abstract (from CDS):

The striking similarity between the solar distribution of r-element abundances in the 56≤Z≤76 range and the corresponding abundance pattern observed in the ultra-metal-poor star CS 22892-052 is analysed. It is found that such an observation does not necessarily imply that the whole A>70 distribution of r-nuclides, including Th, suspected to have been engulfed in CS 22892-052 at the same time as the detected elements is solar. Such a conclusion derives from the finding that an arbitrary superposition of r-process events that does not fit the whole solar r-process pattern can also account for the CS 22892-052 observations. The interpretation of this result and its implications are discussed.

Abstract Copyright:

Journal keyword(s): nucleosynthesis - nuclear reactions - stars: abundances - solar system: general - stars: CS 22892-052 (BPS CS 22892-0052)

Simbad objects: 4

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Number of rows : 4
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 SKB 2 Pe* 00 41 39.8197621944 -26 18 54.460585116   13.338 12.221 11.704 11.321 CEMP-s 88 0
2 HD 140283 Pe* 15 43 03.0971190219 -10 56 00.595693188 7.508 7.711 7.212 6.63 8.21 F9VkA5mA1 890 0
3 HE 2134-3940 Pe* 21 37 45.7673945880 -39 27 22.313379600   13.790 12.660 12.160 11.760 KIIvw 84 0
4 BPS CS 22892-0052 Pe* 22 17 01.6558764360 -16 39 27.051026544   14.03 13.20 13.06 12.19 KIIvw 427 0

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2022.05.25-11:41:00

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