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J/A+AS/123/305 Yields of intermediate mass stars (van den Hoek+ 1997)
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New theoretical yields of intermediate mass stars
van den Hoek L.B., Groenewegen M.A.T.
<Astron. Astrophys. Suppl. Ser. 123, 305 (1997)>
=1997A&AS..123..305V (SIMBAD/NED BibCode)
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ADC_Keywords: Abundances ; Models, evolutionary
Keywords: stars: abundances, evolution, AGB - ISM: abundances -
galaxies: abundances
Description:
We present theoretical yields of H, ^4^He, ^12^C, ^13^C, ^14^N, and
^16^O for stars with initial masses between 0.8 and 8M_{sun}_ and
initial metallicities Z=0.001, 0.004, 0.008, 0.02, and 0.04. We use
the evolutionary tracks of the Geneva group up to the early asymptotic
giant branch (AGB) in combination with a synthetic thermal-pulsing AGB
evolution model to follow in detail the chemical evolution and mass
loss up to the end of the AGB including the first, second, and third
dredge-up phases. Most of the relations used are metallicity dependent
to make a realistic comparison with stars of different initial
abundances. The effect of Hot Bottom Burning (HBB) is included in an
approximate way. The metallicity dependent yields of intermediate mass
stars listed in tables (1-38) below are well suited for use in
galactic chemical evolution models.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tab2-21 108 289 *Yields for eta(AGB)=4, m(HBB)=0.8
tab22-31 58 79 *Yields for eta(AGB)=4, m(HBB)=0.9
table32 88 16 Total H, He yields for synthetic pre-AGB
evolution model
tab33-38 106 82 Yields for HBB=0.8
tables.tex 118 1525 LaTeX version of the tables
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Note on tab2-21, tab22-31: eta(AGB) is the mass loss scaling parameter
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Byte-by-byte Description of file: tab2-21
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Bytes Format Units Label Explanations
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1- 10 A10 --- Yields Yields
12- 16 F5.3 Sun Zini Initial Z abundance
18- 20 F3.1 solMass Mini Initial mass
22- 30 E9.3 --- H H yield
32- 39 E8.3 --- 4He ^4^He yield
41- 49 E9.3 --- 12C ^12^C yield
51- 59 E9.3 --- 13C ^13^C yield
61- 68 E8.3 --- 14N ^14^N yield
70- 78 E9.3 --- 16O ^16^O yield
80- 88 E9.3 --- CNO C+N+O yield
90- 98 E9.3 --- Total Yield of elements heavier than helium
100-103 F4.2 solMass Meject Ejected mass
105-108 F4.2 solMass Mend Mass of the end of phase (1)
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Note (1): Refers to pre-AGB, AGB and final AGB phases
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Byte-by-byte Description of file: tab22-31
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Bytes Format Units Label Explanations
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1- 9 A9 --- Yields Yields
11- 15 F5.3 Sun Zini Initial Z abundance
17- 19 F3.1 solMass Mini Initial mass
21- 29 E9.3 - 12C C^12^ yield
31- 39 E9.3 - 13C C^13^ yield
41- 48 E8.3 - 14N N^14^ yield
50- 58 E9.3 - 16O O^16^ yield
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Byte-by-byte Description of file: table32
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Bytes Format Units Label Explanations
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1- 3 F3.1 solMass Mini Initial mass
5- 12 E8.2 - H1 H -yield at Z = 0.001
14- 21 E8.2 - 4He1 He-yield at Z = 0.001
22- 29 E8.2 - H4 H -yield at Z = 0.004
31- 37 E7.2 - 4He4 He-yield at Z = 0.004
39- 46 E8.2 - H8 H -yield at Z = 0.008
48- 54 E7.2 - 4He8 He-yield at Z = 0.008
56- 63 E8.2 - H20 H -yield at Z = 0.020
65- 71 E7.2 - 4He20 He-yield at Z = 0.020
73- 80 E8.2 - H40 H -yield at Z = 0.040
82- 88 E7.2 - 4He40 He-yield at Z = 0.040
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Byte-by-byte Description of file: tab33-38
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Bytes Format Units Label Explanations
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1- 5 A5 --- Yields Yields
7- 11 F5.3 Sun Zini Initial Z abundance
13 I1 --- eta(AGB) Mass loss scaling parameter
15- 17 F3.1 solMass Mini Initial mass
19- 27 E9.3 --- H H yield
29- 37 E9.3 --- 4He ^4^He yield
39- 47 E9.3 --- 12C ^12^C yield
49- 57 E9.3 --- 13C ^13^C yield
59- 66 E8.3 --- 14N ^14^N yield
68- 76 E9.3 --- 16O ^16^O yield
78- 86 E9.3 --- CNO C+N+O yield
88- 96 E9.3 --- Total Yield of element heavied than helium
98-101 F4.2 solMass Meject Ejected mass
103-106 F4.2 solMass Mend Mass of the end of phase (1)
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Note (1): Refers to pre-AGB, AGB and final AGB phases
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Table1: Initial element abundances adopted
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Element. Z=0.001 0.004 0.008 0.02 0.04
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H 0.756 0.744 0.728 0.68 0.62
4He 0.243 0.252 0.264 0.30 0.34
12C 2.24E-4 9.73E-4 1.79E-3 4.47E-3 9.73E-3
13C 0.04E-4 0.16E-4 0.29E-4 0.72E-4 1.56E-4
14N 0.70E-4 2.47E-4 5.59E-4 1.40E-3 2.47E-3
16O 5.31E-4 2.11E-3 4.24E-3 1.06E-2 2.11E-2
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Acknowledgements: Bob van den Hoek <BOBBY@astro.uva.nl>
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(End) Patricia Bauer [CDS] 09-Oct-1996