J/A+A/581/A15 Models for massive low-Z rotating single stars (Szecsi+, 2015)
Low-metallicity massive single stars with rotation.
Evolutionary models applicable to I Zwicky 18.
Szecsi D., Langer N., Yoon S.-C., Sanyal D., de Mink S.E., Evans C.J.,
Dermine T.
<Astron. Astrophys. 581, A15 (2015)>
=2015A&A...581A..15S 2015A&A...581A..15S
ADC_Keywords: Models, evolutionary ; Galaxies, nearby ; Stars, supergiant ;
Abundances ; Rotational velocities
Keywords: stars: massive - galaxies: dwarf stars: rotation - stars: evolution -
supergiants - ultraviolet: stars
Abstract:
A good understanding of low-metallicity environments requires a
detailed theoretical comprehension of the evolution of their massive
stars. Our models can be used to interpret observations of local
star-forming dwarf galaxies and high-redshift galaxies, as well as the
metal-poor components of our Milky Way and its globular clusters.
Description:
Massive rotating single stars with an initial metal composition
appropriate for the dwarf galaxy I Zw 18 ([Fe/H]=-1.7) are modelled
during hydrogen burning for initial masses of 9-300M☉ and
rotational velocities of 0-900km/s. Internal mixing processes in
these models were calibrated based on an observed sample of OB-type
stars in the Magellanic Clouds.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
t_list.dat 33 375 List of model grids
i_list.dat 23 16 List of isochrones
tracks/* . 375 Models grids
isochr/* . 16 Isochrones
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See also:
J/A+A/530/A115 : Rotating massive MS stars evolutionary models (Brott+, 2011)
J/A+A/573/A71 : Evolution of rotating very massive LC stars (Kohler, 2015)
Byte-by-byte Description of file: t_list.dat
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Bytes Format Units Label Explanations
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1- 3 I3 Msun Mass [9/294] Initial mass
5- 7 I3 km/s Vsurf [0/600] Initial surface rotational velocity
10- 33 A24 --- FileName Name of the model grid in subdirectory tracks
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Byte-by-byte Description of file: i_list.dat
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Bytes Format Units Label Explanations
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1- 3 F3.1 Myr Age Age of isochrone
5- 23 A19 --- FileName Name of the isochrone in subdirectory isochr
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Byte-by-byte Description of file: tracks/*
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Bytes Format Units Label Explanations
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1- 12 E12.6 yr t Time/age on evolutionary track
14- 22 F9.5 Msun Mass Mass
24- 34 F11.5 K Teff Effective temperature
36- 42 F7.5 [Lsun] logL Luminosity
44- 53 F10.5 Rsun R Radius
55- 63 F9.5 [Msun/yr] log(Mdot) Mass loss rate
65- 72 F8.5 [cm/s2] logg Surface gravity
74- 83 F10.5 km/s Vsurf Rotational velocity at the surface
85- 98 F14.5 d Prot Rotation period
100-109 F10.5 km/s Vcrit Critical velocity (assuming an Eddington)
factor for pure election scattering)
111-117 F7.5 --- Ge Eddington Γe factor calculated for)
pure electron scattering
119-126 F8.5 [-] eps(H) Hydrogen surface abundance
128-135 F8.5 [-] eps(He) Helium surface abundance
137-144 F8.5 [-] eps(Li) Lithium surface abundance
146-154 F9.5 [-] eps(Be) Berilium surface abundance
156-164 F9.5 [-] eps(B) Boron surface abundance
166-172 F7.5 [-] eps(C) Carbon surface abundance
174-181 F8.5 [-] eps(N) Nitrogen surface abundance
183-189 F7.5 [-] eps(O) Oxygen surface abundance
191-198 F8.5 [-] eps(F) Fluron surface abundance
200-206 F7.5 [-] eps(Ne) Neon surface abundance
208-214 F7.5 [-] eps(Na) Sodium surface abundance
216-222 F7.5 [-] eps(Mg) Magnesium surface abundance
224-230 F7.5 [-] eps(Al) Aluminium surface abundance
232-238 F7.5 [-] eps(Si) Silicium surface abundance
240-246 F7.5 [-] eps(Fe) Iron surface abundance
248-259 E12.6 --- sH1 Surface mass fraction of H1 isotope
261-272 E12.6 --- sHe3 Surface mass fraction of He3 isotope
274-285 E12.6 --- sHe4 Surface mass fraction of He4 isotope
287-298 E12.6 --- sLi7 Surface mass fraction of Li7 isotope
300-311 E12.6 --- sBe9 Surface mass fraction of Be9 isotope
313-324 E12.6 --- sB10 Surface mass fraction of B10 isotope
326-337 E12.6 --- sB11 Surface mass fraction of B11 isotope
339-350 E12.6 --- sC12 Surface mass fraction of C12 isotope
352-363 E12.6 --- sC13 Surface mass fraction of C13 isotope
365-376 E12.6 --- sN14 Surface mass fraction of N14 isotope
378-389 E12.6 --- sN15 Surface mass fraction of N15 isotope
391-402 E12.6 --- sO16 Surface mass fraction of O16 isotope
404-415 E12.6 --- sO17 Surface mass fraction of O17 isotope
417-428 E12.6 --- sO18 Surface mass fraction of O18 isotope
430-441 E12.6 --- sF19 Surface mass fraction of F19 isotope
443-454 E12.6 --- sNe20 Surface mass fraction of Ne20 isotope
456-467 E12.6 --- sNe21 Surface mass fraction of Ne21 isotope
469-480 E12.6 --- sNe22 Surface mass fraction of Ne22 isotope
482-493 E12.6 --- sNa23 Surface mass fraction of Na23 isotope
495-506 E12.6 --- sMg24 Surface mass fraction of Mg24 isotope
508-519 E12.6 --- sMg25 Surface mass fraction of Mg26 isotope
521-532 E12.6 --- sMg26 Surface mass fraction of Mg26 isotope
534-545 E12.6 --- sAl26 Surface mass fraction of Al26 isotope
547-558 E12.6 --- sAl27 Surface mass fraction of Al27 isotope
560-571 E12.6 --- sSi28 Surface mass fraction of Si28 isotope
573-584 E12.6 --- sSi29 Surface mass fraction of Si29 isotope
586-597 E12.6 --- sSi30 Surface mass fraction of Si30 isotope
599-610 E12.6 --- sFe56 Surface mass fraction of Fe56 isotope
612-623 E12.6 --- cH1 Core mass fraction of H1 isotope
625-636 E12.6 --- cHe3 Core mass fraction of He3 isotope
638-649 E12.6 --- cHe4 Core mass fraction of He4 isotope
651-662 E12.6 --- cLi7 Core mass fraction of Li7 isotope
664-675 E12.6 --- cBe9 Core mass fraction of Be9 isotope
677-688 E12.6 --- cB10 Core mass fraction of B10 isotope
690-701 E12.6 --- cB11 Core mass fraction of B11 isotope
703-714 E12.6 --- cC12 Core mass fraction of C12 isotope
716-727 E12.6 --- cC13 Core mass fraction of C13 isotope
729-740 E12.6 --- cN14 Core mass fraction of N14 isotope
742-753 E12.6 --- cN15 Core mass fraction of N15 isotope
755-766 E12.6 --- cO16 Core mass fraction of O16 isotope
768-779 E12.6 --- cO17 Core mass fraction of O17 isotope
781-792 E12.6 --- cO18 Core mass fraction of O18 isotope
794-805 E12.6 --- cF19 Core mass fraction of F19 isotope
807-818 E12.6 --- cNe20 Core mass fraction of Ne20 isotope
820-831 E12.6 --- cNe21 Core mass fraction of Ne21 isotope
833-844 E12.6 --- cNe22 Core mass fraction of Ne22 isotope
846-857 E12.6 --- cNa23 Core mass fraction of Na23 isotope
859-870 E12.6 --- cMg24 Core mass fraction of Mg24 isotope
872-883 E12.6 --- cMg25 Core mass fraction of Mg25 isotope
885-896 E12.6 --- cMg26 Core mass fraction of Mg26 isotope
898-909 E12.6 --- cAl26 Core mass fraction of Al26 isotope
911-922 E12.6 --- cAl27 Core mass fraction of Al27 isotope
924-935 E12.6 --- cSi28 Core mass fraction of Si28 isotope
937-948 E12.6 --- cSi29 Core mass fraction of Si29 isotope
950-961 E12.6 --- cSi30 Core mass fraction of Si30 isotope
963-974 E12.6 --- cFe56 Core mass fraction of Fe56 isotope
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Byte-by-byte Description of file: isochr/*
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Bytes Format Units Label Explanations
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1- 3 I3 Msun Mini Initial mass
5- 7 I3 km/s Vini Initial surf rot velocity
9- 13 F5.3 Lsun logL Luminosity
15- 19 I5 K Teff Effective temperature
21- 26 F6.2 Msun M Mass
28- 32 F5.1 km/s V Velocity
34- 40 F7.2 Rsun R Radius
42- 50 E9.3 Msun/yr Mdot Mass loss rate
52- 60 F9.5 --- sH Surface mass fraction of H
62- 70 F9.5 --- sHe Surface mass fraction of He
72- 79 F8.5 --- sLi Surface mass fraction of Li
81- 89 F9.5 --- sBe Surface mass fraction of Be
91- 99 F9.5 --- sB Surface mass fraction of B
101-108 F8.5 --- sC Surface mass fraction of C
110-117 F8.5 --- sN Surface mass fraction of N
119-126 F8.5 --- sO Surface mass fraction of O
128-135 F8.5 --- sF Surface mass fraction of F
137-144 F8.5 --- sNe Surface mass fraction of Ne
146-153 F8.5 --- sNa Surface mass fraction of Na
155-162 F8.5 --- sMg Surface mass fraction of Mg
164-171 F8.5 --- sAl Surface mass fraction of Al
173-180 F8.5 --- sSi Surface mass fraction of Si
182-189 F8.5 --- sFe Surface mass fraction of Fe
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Acknowledgements:
Dorottya Szecsi, dorottya.szecsi(at)gmail.com
(End) Patricia Vannier [CDS] 22-Jul-2015