J/MNRAS/425/1696 Models of a young star cluster ejecta (Molla+, 2012)
Modelling the composition of a young star cluster ejecta.
Molla M., Terlevich R.
<Mon. Not. R. Astron. Soc., 425, 1696-1708 (2012)>
=2012MNRAS.425.1696M 2012MNRAS.425.1696M
ADC_Keywords: Models, evolutionary ; Supernovae ; Mass loss ; Abundances ;
Clusters, open
Keywords: stars: abundances - stars: mass-loss - supernovae: general -
stars: Wolf-Rayet - galaxies: abundances -
galaxies: star clusters: general
Abstract:
We have computed with a fine time grid the evolution of the elemental
abundances of He, C, N and O ejected by young (t<20Myr) and massive
(M=106M☉) coeval stellar cluster with a Salpeter initial mass
function (IMF) over a wide range of initial abundances. Our
computations incorporate the mass loss from massive stars
(M≥30M☉) during their wind phase including the Wolf-Rayet phase
and the ejecta from the core-collapse supernovae. We find that during
the Wolf-Rayet phase (t<5Myr) the cluster ejecta composition suddenly
becomes vastly overabundant in N for all initial abundances and in He,
C and O for initial abundances higher than one-fifth of the solar. The
C and O abundances in the cluster ejecta can reach over 50 times the
solar value with important consequences for the chemical and
hydrodynamical evolution of the surrounding interstellar medium.
Description:
These tables give the complete information provided in the paper.
Each table shows the calculations for 6 Initial Mass Functions (IMFs):
SAL: Salpeter (1955ApJ...121..161S 1955ApJ...121..161S)
MIL: Miller & Scalo (1979ApJS...41..513M 1979ApJS...41..513M)
FER: Ferrini et al. (1990A&A....231.391F 1990A&A....231.391F)
STB: Leitherer et al (1999ApJS..123....3L 1999ApJS..123....3L)
KRO: Kroupa et al. (2001MNRAS.322..231K 2001MNRAS.322..231K)
CHA: Chabrier (2003ApJ...586L.133C 2003ApJ...586L.133C)
For each IMF calculations are performed for 6 metallicities Z=0.0001,
0.0004, 0.004,0.008,0.02,0.05. Stellar clusters are assumed formed with
106M☉ and limits Mlow=0.15M☉ and Mup=100M☉.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 33 42 Basic information for 7 stellar masses (12, 15, 20,
30, 40, 60, 100) and 6 metallicites (0.0001,
0.0004, 0.004, 0.008, 0.02, 0.05)
table2.dat 87 81900 Mass loss and elemental abundances for H, He4,
C12, N14 and O16 of the 7 stellar masses of
table1.dat
table3.dat 77 72000 Accumulated masses ejected by stellar winds in a
106M☉ clusters (stars of masses 0.15≤M≤100)
table3b.dat 77 72000 Instantaneous masses ejected by stellar winds in a
106M☉ clusters (stars of masses 0.15≤M≤100)
table5.dat 133 72000 Accumulated masses ejected by SN-II in a
106M☉ clusters (stars of masses 0.15≤M≤100)
table5b.dat 151 72000 Instantaneous masses ejected by SN-II in a
106M☉ clusters (stars of masses 0.15≤M≤100)
table6.dat 52 42 Total masses ejected by stellar winds in cluster
table7.dat 52 42 Total masses ejected by supernovae in cluster
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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2- 7 F6.4 --- Z [0.0001/0.05] Total abundance in mass (G1)
13- 15 I3 Msun Mini [12/100] Initial (main sequence) stellar mass
20- 24 F5.2 Msun Mend Final stellar mass
29- 33 F5.2 Myr tend Evolutionary time to reach to the final mass
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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 [0.0001/0.05] Total abundance in mass (G1)
8 I1 --- N [1/7] Index number of star from 1(Minit=12)
to 7(Minit=100)
10- 13 F4.0 Msun Mini [12/100] Initial (main sequence) stellar mass
15- 20 F6.3 Myr t Evolutionary time
22- 30 E9.3 Msun/yr dM/dt Mass loss rate
32- 40 E9.3 --- XH Hydrogen abundance in mass fraction
42- 50 E9.3 --- XHe4 4He abundance in mass fraction
52- 60 E9.3 --- XC12 12C abundance in mass fraction
62- 70 E9.3 --- XN14 14N abundance in mass fraction
72- 80 E9.3 --- XO16 16O abundance in mass fraction
82- 87 F6.2 Msun M Stellar mass at t time
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- IMF Symbol of IMF used (G2)
5- 10 F6.4 --- Z [0.0001/0.05] Total abundance in mass (G1)
12- 16 F5.2 Myr t [0/20] Evolutionary time
18- 25 E8.3 Msun Mej Accumulated total ejected mass by massive stars
(M>12M☉)
27- 34 E8.3 Msun H Accumulated ejected H mass in M☉
36- 43 E8.3 Msun He4 Accumulated ejected He4 mass in M☉
45- 52 E8.3 Msun C12 Accumulated ejected C12 mass in M☉
54- 61 E8.3 Msun N14 Accumulated ejected N14 mass in M☉
63- 70 E8.3 Msun O16 Accumulated ejected O16 mass in M☉
72- 77 F6.4 --- Zej [0/1] Ejecta total abundance
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Byte-by-byte Description of file: table3b.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- IMF Symbol of IMF used (G2)
5- 10 F6.4 --- Z [0.0001/0.05] Total abundance in mass (G1)
12- 16 F5.2 Myr t [0/20] Evolutionary time
18- 25 E8.3 Msun/yr Mej Instantaneous total ejected mass by massive stars
(M>12M☉)
27- 34 E8.3 Msun/yr H Instantaneous ejected H mass in M☉
36- 43 E8.3 Msun/yr He4 Instantaneous ejected He4 mass in M☉
45- 52 E8.3 Msun/yr C12 Instantaneous ejected C12 mass in M☉
54- 61 E8.3 Msun/yr N14 Instantaneous ejected N14 mass in M☉
63- 70 E8.3 Msun/yr O16 Instantaneous ejected O16 mass in M☉
72- 77 F6.4 --- Zej [0/1] Ejecta abundance
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- IMF Symbol of IMF used (G2)
5- 10 F6.4 --- Z [0.0001/0.05] Total abundance in mass (G1)
12- 16 F5.2 Myr t [0/20] Evolutionary time
18- 25 E8.3 Msun Mej Accumulated total ejected mass due to SN explosions
27- 34 E8.3 Msun H Accumulated ejected H mass
36- 43 E8.3 Msun He4 Accumulated ejected 4He mass
45- 52 E8.3 Msun C12 Accumulated ejected 12C mass
54- 61 E8.3 Msun N14 Accumulated ejected 14N mass
63- 70 E8.3 Msun O16 Accumulated ejected 16O mass
72- 79 E8.3 Msun C13 Accumulated ejected 13C mass
81- 88 E8.3 Msun Ne Accumulated ejected Ne mass
90- 97 E8.3 Msun Mg Accumulated ejected Mg mass
99-106 E8.3 Msun Si Accumulated ejected Si mass
108-115 E8.3 Msun S Accumulated ejected S mass
117-124 E8.3 Msun Ca Accumulated ejected Ca mass
126-133 E8.3 Msun Fe Accumulated ejected Fe mass
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Byte-by-byte Description of file: table5b.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- IMF Symbol of IMF used (G2)
5- 10 F6.4 --- Z [0.0001/0.05] Total abundance in mass (G1)
12- 16 F5.2 Myr t [0/20] Evolutionary time in Myr
18- 25 E8.3 Msun/yr Mej Instantaneous total ejected mass due to
SN explosions
27- 34 E8.3 Msun/yr H Instantaneous ejected H mass
36- 43 E8.3 Msun/yr He4 Instantaneous ejected 4He mass
45- 52 E8.3 Msun/yr C12 Instantaneous ejected 12C mass
54- 61 E8.3 Msun/yr N14 Instantaneous ejected 14N mass
63- 70 E8.3 Msun/yr O16 Instantaneous ejected 165O mass
72- 79 E8.3 Msun/yr C13 Instantaneous ejected 13C mass
81- 88 E8.3 Msun/yr Ne Instantaneous ejected Ne mass
90- 97 E8.3 Msun/yr Mg Instantaneous ejected Mg mass
99-106 E8.3 Msun/yr Si Instantaneous ejected Si mass
108-115 E8.3 Msun/yr S Instantaneous ejected S mass
117-124 E8.3 Msun/yr Ca Instantaneous ejected Ca mass
126-133 E8.3 Msun/yr Fe Instantaneous ejected Fe mass
135-139 F5.2 Msun MSN Initial Mass of the star exploding as SN
141-145 F5.2 Msun Mrem Remnant of the star exploding as SN
147-151 A5 ---- FLAG Indication of SN or non-SN time (1)
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Note (1): Indication of SN yields:
WW95 = Woosley and Weaver (1995ApJS..101..181W 1995ApJS..101..181W)
WLW = Woosley, Langer and Weaver (1993ApJ...411..823W 1993ApJ...411..823W; 1995ApJ...448..315W 1995ApJ...448..315W)
NO-SN = non-SN time
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Byte-by-byte Description of file: table6.dat table7.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- IMF Symbol of IMF used (G2)
5- 10 F6.4 --- Z [0.0001/0.05] Total abundance in mass (G1)
12- 17 I6 Msun Mej Total ejected mass
20- 24 I5 Msun H Accumulated ejected H mass
27- 31 I5 Msun He Accumulated ejected He mass
34- 38 I5 Msun C Accumulated ejected C mass
41- 45 I5 Msun N Accumulated ejected N mass
48- 52 I5 Msun O Accumulated ejected O mass
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Global Notes:
Note (G1): the (initial) abundances in mass of the stellar population are
0.0001, 0.0004, 0.004, 0.008, 0.02, 0.05.
Note (G2): the Initial Mass Functions (IMFs) are:
SAL = Salpeter (1955ApJ...121..161S 1955ApJ...121..161S)
MIL = Miller & Scalo (1979ApJS...41..513M 1979ApJS...41..513M)
FER = Ferrini et al. (1990A&A....231.391F 1990A&A....231.391F)
STB = Leitherer et al (1999ApJS..123....3L 1999ApJS..123....3L)
KRO = Kroupa et al. (2001MNRAS.322..231K 2001MNRAS.322..231K)
CHA = Chabrier (2003ApJ...586L.133C 2003ApJ...586L.133C)
Acknowledgements:
Mercedes Molla mercedes(at)ciemat.es
(End) Patricia Vannier [CDS] 11-Mar-2013