J/ApJ/696/797 Evolution and yields of low-mass AGB stars (Cristallo+, 2009)
Evolution, nucleosynthesis, and yields of low-mass asymptotic giant branch stars
at different metallicities.
Cristallo S., Straniero O., Gallino R., Piersanti L., Dominguez I.,
Lederer M.T.
<Astrophys. J., 696, 797-820 (2009)>
=2009ApJ...696..797C 2009ApJ...696..797C
ADC_Keywords: Abundances ; Models ; Stars, giant
Keywords: nuclear reactions, nucleosynthesis, abundances -
stars: AGB and post-AGB
Abstract:
The envelope of thermally pulsing asymptotic giant branch (TP-AGB)
stars undergoing periodic third dredge-up (TDU) episodes is enriched
in both light and heavy elements, the ashes of a complex internal
nucleosynthesis involving p, α, and n captures over hundreds of
stable and unstable isotopes. In this paper, new models of low-mass
AGB stars (2M☉), with metallicity ranging between Z=0.0138 (the
solar one) and Z=0.0001, are presented. Main features are (1) a full
nuclear network (from H to Bi) coupled to the stellar evolution code,
(2) a mass loss-period-luminosity relation, based on available data
for long-period variables, and (3) molecular and atomic opacities for
C- and/or N-enhanced mixtures, appropriate for the chemical
modifications of the envelope caused by the TDU. For each model, a
detailed description of the physical and chemical evolutions is
presented; moreover, we present a uniform set of yields, comprehensive
of all chemical species (from hydrogen to bismuth).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table7.dat 112 76 Pulse by pulse elemental surface composition of
the Z=0.0138 model
table8.dat 142 76 Pulse by pulse elemental surface composition of
the Z=0.006 model
table9.dat 162 76 Pulse by pulse elemental surface composition of
the Z=0.003 model
table10.dat 182 76 Pulse by pulse elemental surface composition of
the Z=0.001 model
table11.dat 152 76 Pulse by pulse elemental surface composition of
the Z=0.0001 model
table12.dat 61 83 Final elemental surface composition of the 5
reference models at different metallicities
table14.dat 57 287 Stellar yields of the 5 reference models at
different metallicities
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See also:
J/A+A/512/A10 : Evolution of massive AGB stars. III. (Siess, 2010)
J/ApJ/690/837 : CN and CO observations toward AGB stars (Milam+, 2009)
Byte-by-byte Description of file: table[789].dat table1[01].dat
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Bytes Format Units Label Explanations
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1- 2 A2 --- El Element identification
4- 12 E9.3 [-] TDU1 1st Third Dredge Up surface composition (1)
14- 22 E9.3 [-] TDU2 2nd Third Dredge Up surface composition (1)
24- 32 E9.3 [-] TDU3 3rd Third Dredge Up surface composition (1)
34- 42 E9.3 [-] TDU4 4th Third Dredge Up surface composition (1)
44- 52 E9.3 [-] TDU5 5th Third Dredge Up surface composition (1)
54- 62 E9.3 [-] TDU6 6th Third Dredge Up surface composition (1)
64- 72 E9.3 [-] TDU7 7th Third Dredge Up surface composition (1)
74- 82 E9.3 [-] TDU8 8th Third Dredge Up surface composition (1)
84- 92 E9.3 [-] TDU9 9th Third Dredge Up surface composition (1)
94-102 E9.3 [-] TDU10 10th Third Dredge Up surface composition (1)
104-112 E9.3 [-] TDU11 11th Third Dredge Up surface composition (1)
114-122 E9.3 [-] TDU12 ? 12th Third Dredge Up surface composition (1)
124-132 E9.3 [-] TDU13 ? 13th Third Dredge Up surface composition (1)
134-142 E9.3 [-] TDU14 ? 14th Third Dredge Up surface composition (1)
144-152 E9.3 [-] TDU15 ? 15th Third Dredge Up surface composition (1)
154-162 E9.3 [-] TDU16 ? 16th Third Dredge Up surface composition (1)
164-172 E9.3 [-] TDU17 ? 17th Third Dredge Up surface composition (1)
174-182 E9.3 [-] TDU19 ? 19th Third Dredge Up surface composition (1)
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Note (1): Tabulated in the usual spectroscopic notation [El/Fe].
The compositions fir TDU12-TDU19 exist only for some metallicities.
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Byte-by-byte Description of file: table12.dat
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Bytes Format Units Label Explanations
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1- 11 A11 --- El/Rat Element or ratio identification (2)
13- 21 E9.3 --- Z1.38e-2 Final surface composition of Z=1.38e-2 model (1)
23- 31 E9.3 --- Z6.0e-3 Final surface composition of Z=6.0e-3 model (1)
33- 41 E9.3 --- Z3.0e-3 Final surface composition of Z=3.0e-3 model (1)
43- 51 E9.3 --- Z1.0e-3 Final surface composition of Z=1.0e-3 model (1)
53- 61 E9.3 --- Z1.0e-4 Final surface composition of Z=1.0e-4 model (1)
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Note (1): Elements are tabulated in the usual spectroscopic notation [El/Fe].
Note (2): "hs" and "ls" represent the heavy s-process elements (Ba,...)
and the light s-process elements (Sr, Y, Zr) respectively
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Byte-by-byte Description of file: table14.dat
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Bytes Format Units Label Explanations
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2- 4 I3 --- A [1/210] Isotope number
6- 7 A2 --- El Element number
9- 17 E9.3 Msun Z1.38e-2 Yield of Z=1.38e-2 model
19- 27 E9.3 Msun Z6.0e-3 Yield of Z=6.0e-3 model
29- 37 E9.3 Msun Z3.0e-3 Yield of Z=3.0e-3 model
39- 47 E9.3 Msun Z1.0e-3 Yield of Z=1.0e-3 model
49- 57 E9.3 Msun Z1.0e-4 Yield of Z=1.0e-4 model
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 10-May-2011