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| Query : 2009ApJ...692..522W |
2009ApJ...692..522W - Astrophys. J., 692, 522-530 (2009/February-2)
Element enhancements along the entire asymptotic giant branch phase.
WYLIE-DE BOER E.C. and COTTRELL P.L.
Abstract (from CDS):
The results of a study of the asymptotic giant branch (AGB) phase of stellar evolution are presented. Abundances have been determined for Fe, C, O, the light s-process elements, Y and Zr, the heavy s-process elements, La and Nd, and the r-process element, Eu. The expected relationship between enhanced C, increasing C/O ratio, and enhanced s-process elements has been quantified.
Result. are presented to provide observational data with which to compare theoretical predictions. The results in this paper confirm previously suggested relationships between C, C/O, and s-process element enhancements. It is seen that AGB stars show C/O ratios from C/O ∼ 0.4 to 1.0, while C enhancements lie between [C/Fe] = 0.1-0.9 dex. Enhancements of s-process elements are as much as [s/Fe] ∼ 1.0 dex for the stars in which C is also greatly enhanced.
Result. are presented to provide observational data with which to compare theoretical predictions. The results in this paper confirm previously suggested relationships between C, C/O, and s-process element enhancements. It is seen that AGB stars show C/O ratios from C/O ∼ 0.4 to 1.0, while C enhancements lie between [C/Fe] = 0.1-0.9 dex. Enhancements of s-process elements are as much as [s/Fe] ∼ 1.0 dex for the stars in which C is also greatly enhanced.
Abstract Copyright: ∼
Journal keyword(s): nuclear reactions, nucleosynthesis, abundances - stars: abundances - stars: AGB and post-AGB
Simbad objects: 13
| Number of rows : 13 |
| 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 | V* DT Psc | Sy* | 01 14 04.9051442688 | +28 31 46.448476788 | 8.016 | 6.347 | S3+/2- | 129 | 0 | |||
| 2 | * gam Tau | ** | 04 19 47.6039239005 | +15 37 39.511385129 | 5.46 | 4.64 | 3.65 | 4.83 | G9.5IIIabCN0.5 | 569 | 0 | |
| 3 | * omi Ori | S* | 04 52 31.9624004856 | +14 15 02.311506180 | 6.458 | 4.721 | M3SIII | 225 | 0 | |||
| 4 | V* GP Ori | S* | 05 02 48.0655541832 | +15 19 12.661687128 | 11.95 | 12.20 | SC7/8 | 97 | 0 | |||
| 5 | V* V1261 Ori | Sy* | 05 22 18.6449207496 | -08 39 58.031922816 | 10.28 | 8.57 | 6.77 | S4,1 | 170 | 0 | ||
| 6 | * mu. Gem | LP* | 06 22 57.62686 | +22 30 48.8979 | 6.37 | 4.51 | 2.87 | 1.30 | -0.08 | M3IIIab | 392 | 1 |
| 7 | HD 49331 | AB* | 06 47 37.2209781792 | -08 59 54.609791028 | 6.860 | 5.062 | M1Ib-IIa | 90 | 0 | |||
| 8 | V* V613 Mon | S* | 06 48 22.2962629896 | +05 32 30.062068944 | 9.53 | 7.78 | S3/2 | 89 | 0 | |||
| 9 | V* NQ Pup | S* | 07 53 05.2704648648 | -11 37 29.352872136 | 9.34 | 7.64 | S4.5/2 | 100 | 0 | |||
| 10 | * nu. Vir | LP* | 11 45 51.5595979999 | +06 31 45.748996439 | 7.32 | 5.54 | 4.04 | 2.79 | 1.78 | M1III | 267 | 0 |
| 11 | * del Vir | RG* | 12 55 36.2086240844 | +03 23 50.888053818 | 6.76 | 4.97 | 3.38 | 1.86 | 0.53 | M3+III | 282 | 0 |
| 12 | * alf Boo | RG* | 14 15 39.67207 | +19 10 56.6730 | 2.46 | 1.18 | -0.05 | -1.03 | -1.68 | K1.5IIIFe-0.5 | 2417 | 1 |
| 13 | V* HR Peg | S* | 22 54 35.6272159944 | +16 56 30.606025560 | 9.970 | 8.160 | 6.360 | S4+/1+ | 137 | 0 |
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