J/A+A/432/861 Yields of low and intermediate mass stars (Gavilan+, 2005)
New low and intermediate mass stars yields: The evolution of carbon abundances.
Gavilan M., Buell J.F., Molla M.
<Astron. Astrophys. 432, 861 (2005)>
=2005A&A...432..861G 2005A&A...432..861G
ADC_Keywords: Models, evolutionary ; Abundances
Keywords: Galaxy: abundances - stars: evolution - galaxies: abundances -
Galaxy: evolution - galaxies: spiral
Abstract:
We present a set of low and intermediate mass star yields based on a
modeling of the TP-AGB phase which affects the production of nitrogen
and carbon. These yields are evaluated by using them in a Galaxy
Chemical Evolution model, with which we analyze the evolution of
carbon abundances. By comparing the results with those obtained with
other yield sets, and with a large amount of observational data, we
conclude that the model using these yields combined with those from
Woosley & Weaver (1995ApJS..101..181W 1995ApJS..101..181W) for massive stars properly
reproduce all the data. The model reproduces well the increase of C/O
with increasing O/H abundances. Since these massive star yields do not
include winds, it implies that these stellar winds might have a
smoother dependence on metallicity than usually assumed and that a
significant quantity of carbon proceeds from LIM stars.
Description:
These tables show the complete content of Table 1 and Table 2 which
give the production of elements in low and intermediate stars.
Table 1 give the stellar yields for 5 values of metallicities:
log(Z/Z☉)=-0.2, -0.1, 0.0, +0.1 and +0.2, and for masses
from 1 to 8M☉. Table 2 give the ejected mass by the stars
during their evolution for the same metallicity range. This last one
is the input file necessary to use in a chemical evolution model and
it includes the stars up to 100M☉. The ejected masses for
massive stars (m>8M☉) correspond to the production factors
given by Woosley & Weaver (1995ApJS..101..181W 1995ApJS..101..181W).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 111 168 Stellar yields for low and intermediate stars
(M<8M☉)
table2.dat 149 231 *Ejected mass by stars
(0.8M☉≤M*≤100M{sun})
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Note on table2.dat: Computed with table1 (M≥8M☉) and
Woosley & Weaver (1995ApJS..101..181W 1995ApJS..101..181W) (M≥8M☉)
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See also:
J/A+A/299/755 : Stellar evolution. II. Post-AGB (Bloecker+, 1995)
J/A+A/337/403 : Low-mass stars evolutionary models (Baraffe+ 1998)
J/A+AS/141/371 : Low-mass stars evolution. tracks + isochrones (Girardi+, 2000)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 4 F4.1 Sun [Fe/H] Metallicity
8- 11 F4.2 solMass Mstar Stellar Mass
13- 21 E9.3 solMass M[H] Yield of H
23- 31 E9.3 solMass M[He] Yield of 4He
33- 41 E9.3 solMass M[C12] Yield of 12C
43- 51 E9.3 solMass M[N14] Yield of 14N
53- 61 E9.3 solMass M[O16] Yield of 16O
63- 71 E9.3 solMass M[C13] Yield of 13C
73- 81 E9.3 solMass M[C12p] Yield of primary 12C
83- 91 E9.3 solMass M[N14p] Yield of primary 14N
93-101 E9.3 solMass M[O16p] Yield of primary 16O
103-111 E9.3 solMass M[C13p] Yield of primary 13C
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 6 F6.4 --- Z Metallicity as Z (Z☉=0.020)
8- 13 F6.2 solMass Mstar Stellar Mass [0.8M☉-100.0M☉]
15- 22 E8.3 solMass Mrmn Mass of Remnant
24- 31 E8.3 solMass H Ejected Mass in H
33- 40 E8.3 solMass 4He Ejected Mass in 4He
42- 49 E8.3 solMass 12C Ejected Mass in 12C
51- 58 E8.3 solMass 13C Ejected Mass in 13C
60- 67 E8.3 solMass 14N Ejected Mass in 14N
69- 76 E8.3 solMass 13Cs Ejected Mass in 13C (secondary component)
78- 85 E8.3 solMass 14Ns Ejected Mass in 14N (secondary component)
87- 94 E8.3 solMass 16O Ejected Mass in 16O
96-103 E8.3 solMass 20Ne Ejected Mass in 20Ne
105-113 E9.3 solMass 24Mg Ejected Mass in 24Mg
115-122 E8.3 solMass 28Si Ejected Mass in 28Si
124-131 E8.3 solMass 32S Ejected Mass in 32S
133-140 E8.3 solMass 40Ca Ejected Mass in 40Ca
142-149 E8.3 solMass 56Fe Ejected Mass in 56Fe
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Acknowledgements: Mercedes Molla, mercedes.molla(at)ciemat.es
(End) Patricia Vannier [CDS] 18-Jan-2005