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J/A+A/530/A115    Rotating massive MS stars evolutionary models   (Brott+, 2011)

Rotating massive main-sequence stars. I: Grids of evolutionary models and isochrones. Brott I., de Mink S.E., Cantiello M., Langer N., de Koter A., Evans C.J., Hunter I., Trundle C., Vink J.S. <Astron. Astrophys. 530, A115 (2011)> =2011A&A...530A.115B
ADC_Keywords: Models, evolutionary ; Isochrones ; Stars, dwarfs ; Rotational velocities ; Abundances Keywords: stars: abundances - stars: evolution - stars: early-type - stars: rotation - stars: massive Abstract: We present a dense grid of evolutionary tracks and isochrones of rotating massive main-sequence stars. We provide three grids with different initial compositions tailored to compare with early OB stars in the Small and Large Magellanic Clouds and in the Galaxy. Each grid covers masses ranging from 5 to 60M and initial rotation rates between 0 and about 600km/s. To calibrate our models we used the results of the VLT-FLAMES Survey of Massive Stars. We determine the amount of convective overshooting by using the observed drop in rotation rates for stars with surface gravities logg<3.2 to determine the width of the main sequence. We calibrate the efficiency of rotationally induced mixing using the nitrogen abundance determinations for B stars in the Large Magellanic cloud. We describe and provide evolutionary tracks and the evolution of the central and surface abundances. Description: Isochrones up to hydrogen exhaustion for various rotational velocities generated from the evolutionary models presented in this paper. Mass Range: 5-60M, δM: 0.05M Rotational velocity range: 0-540km/s , δv: 10km/s Ages covered: 0-35Myrs , δt: 0.2Myrs Ages and initial compositions are coded in the file names: Filename Format: aiso_<age>.<composition>.dat Evolutionary Models for various initial masses (5-60M) and initial rotational velocities (0-∼550)km/s calculated until after core hydrogen exhaustion. Many models continue until helium ignition. Initial masses and rotational velocities at the zero age main sequence velocities can be read from the filenames Filename Format: f<Minit>-<Vzams>.<chemical mixture>.track.dat Chemical mixtures are indicated as "lmc", "smc" or "mw" for Large Magellanic Cloud, Small Magellanic Cloud and Galactic initial compositions, respectively. See the Paper for details. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file models.dat 33 663 List of models files isochron.dat 35 528 List of isochrones files evol/* 1001 663 Evolutionary models with Galactic, LMC and SMC initial abundances iso/* 235 528 Isochrones generated from evolutionnary models
Byte-by-byte Description of file: models.dat
Bytes Format Units Label Explanations
1- 2 I2 Msun Minit [5/60] Inital Mass 4- 6 I3 km/s Vzams [0/600] Inital rotational velocity 8- 10 A3 --- Comp Chemical mixture (lmc, smc or mw) 13- 33 A21 --- FileName Name of the file in subdirectory evol
Byte-by-byte Description of file: isochron.dat
Bytes Format Units Label Explanations
1- 8 E8.3 yr Age [0/35e6] Age 10- 12 A3 --- Comp Chemical mixture (lmc, smc or mw) 15- 35 A21 ---- FileName Name of the file in subdirectory iso
Byte-by-byte Description of file (# headlines): evol/*
Bytes Format Units Label Explanations
1- 12 E12.6 yr t Time/age on evolutionary track 14- 22 F9.5 Msun Mass Mass 24- 35 F12.5 K Teff Effective temperature 37- 44 F8.5 [Lsun] logL Luminosity 46- 55 F10.5 Rsun R Radius 57- 65 F9.5 [Msun/yr] log(Mdot) Mass loss rate 67- 75 F9.5 [cm/s2] logg Surface gravity 77- 86 F10.5 km/s Vsurf Rotational velocity at the surface 88-102 F15.5 d Prot Rotation period 104-113 F10.5 km/s Vcrit ? Beakup velocity (asuming an Eddington factor for pure election scattering) (1) 115-123 F9.5 --- Ge Eddington Γe factor calculated for pure electron scattering 125-133 F9.5 [---] eps(H) [12] Hydrogen surface abundance (G1) 135-143 F9.5 [---] eps(He) Helium surface abundance (G1) 145-153 F9.5 [---] eps(Li) Lithium surface abundance (G1) 155-163 F9.5 [---] eps(Be) Berilium surface abundance (G1) 165-173 F9.5 [---] eps(B) Boron surface abundance (G1) 175-183 F9.5 [---] eps(C) Carbon surface abundance (G1) 185-193 F9.5 [---] eps(N) Nitrogen surface abundance (G1) 195-203 F9.5 [---] eps(O) Oxygen surface abundance (G1) 205-213 F9.5 [---] eps(F) Fluron surface abundance (G1) 215-223 F9.5 [---] eps(Ne) Neon surface abundance (G1) 225-233 F9.5 [---] eps(Na) Sodium surface abundance (G1) 235-243 F9.5 [---] eps(Mg) Magnesium surface abundance (G1) 245-253 F9.5 [---] eps(Al) Aluminium surface abundance (G1) 255-263 F9.5 [---] eps(Si) Silicium surface abundance (G1) 265-273 F9.5 [---] eps(Fe) Iron surface abundance (G1) 275-286 E12.6 --- sH1 Surface mass fraction of H1 isotope 288-299 E12.6 --- sHe3 Surface mass fraction of He3 isotope 301-312 E12.6 --- sHe4 Surface mass fraction of He4 isotope 314-325 E12.6 --- sLi7 Surface mass fraction of Li7 isotope 327-338 E12.6 --- sBe9 Surface mass fraction of Be9 isotope 340-351 E12.6 --- sB10 Surface mass fraction of B10 isotope 353-364 E12.6 --- sB11 Surface mass fraction of B11 isotope 366-377 E12.6 --- sC12 Surface mass fraction of C12 isotope 379-390 E12.6 --- sC13 Surface mass fraction of C13 isotope 392-403 E12.6 --- sN14 Surface mass fraction of N14 isotope 405-416 E12.6 --- sN15 Surface mass fraction of N15 isotope 418-429 E12.6 --- sO16 Surface mass fraction of O16 isotope 431-442 E12.6 --- sO17 Surface mass fraction of O17 isotope 444-455 E12.6 --- sO18 Surface mass fraction of O18 isotope 457-468 E12.6 --- sF19 Surface mass fraction of F19 isotope 470-481 E12.6 --- sNe20 Surface mass fraction of Ne20 isotope 483-494 E12.6 --- sNe21 Surface mass fraction of Ne21 isotope 496-507 E12.6 --- sNe22 Surface mass fraction of Ne22 isotope 509-520 E12.6 --- sNa23 Surface mass fraction of Na23 isotope 522-533 E12.6 --- sMg24 Surface mass fraction of Mg24 isotope 535-546 E12.6 --- sMg25 Surface mass fraction of Mg26 isotope 548-559 E12.6 --- sMg26 Surface mass fraction of Mg26 isotope 561-572 E12.6 --- sAl26 Surface mass fraction of Al26 isotope 574-585 E12.6 --- sAl27 Surface mass fraction of Al27 isotope 587-598 E12.6 --- sSi28 Surface mass fraction of Si28 isotope 600-611 E12.6 --- sSi29 Surface mass fraction of Si29 isotope 613-624 E12.6 --- sSi30 Surface mass fraction of Si30 isotope 626-637 E12.6 --- sFe56 Surface mass fraction of Fe56 isotope 639-650 E12.6 --- cH1 Core mass fraction of H1 isotope 652-663 E12.6 --- cHe3 Core mass fraction of He3 isotope 665-676 E12.6 --- cHe4 Core mass fraction of He4 isotope 678-689 E12.6 --- cLi7 Core mass fraction of Li7 isotope 691-702 E12.6 --- cBe9 Core mass fraction of Be9 isotope 704-715 E12.6 --- cB10 Core mass fraction of B10 isotope 717-728 E12.6 --- cB11 Core mass fraction of B11 isotope 730-741 E12.6 --- cC12 Core mass fraction of C12 isotope 743-754 E12.6 --- cC13 Core mass fraction of C13 isotope 756-767 E12.6 --- cN14 Core mass fraction of N14 isotope 769-780 E12.6 --- cN15 Core mass fraction of N15 isotope 782-793 E12.6 --- cO16 Core mass fraction of O16 isotope 795-806 E12.6 --- cO17 Core mass fraction of O17 isotope 808-819 E12.6 --- cO18 Core mass fraction of O18 isotope 821-832 E12.6 --- cF19 Core mass fraction of F19 isotope 834-845 E12.6 --- cNe20 Core mass fraction of Ne20 isotope 847-858 E12.6 --- cNe21 Core mass fraction of Ne21 isotope 860-871 E12.6 --- cNe22 Core mass fraction of Ne22 isotope 873-884 E12.6 --- cNa23 Core mass fraction of Na23 isotope 886-897 E12.6 --- cMg24 Core mass fraction of Mg24 isotope 899-910 E12.6 --- cMg25 Core mass fraction of Mg25 isotope 912-923 E12.6 --- cMg26 Core mass fraction of Mg26 isotope 925-936 E12.6 --- cAl26 Core mass fraction of Al26 isotope 938-949 E12.6 --- cAl27 Core mass fraction of Al27 isotope 951-962 E12.6 --- cSi28 Core mass fraction of Si28 isotope 964-975 E12.6 --- cSi29 Core mass fraction of Si29 isotope 977-988 E12.6 --- cSi30 Core mass fraction of Si30 isotope 990-1001 E12.6 --- cFe56 Core mass fraction of Fe56 isotope
Note (1): Blank for nan (no value)
Byte-by-byte Description of file: iso/*
Bytes Format Units Label Explanations
1- 13 F13.4 yr t time/age of isochrone 15- 21 F7.4 Msun Mass Mass 23- 33 F11.4 K Teff Effective temperature 35- 41 F7.4 [Lsun] logL Luminosity 43- 52 F10.4 Rsun R Radius 54- 62 F9.4 [Msun/yr] log(Mdot) Mass loss rate 64- 72 F9.4 [s/cm2] logg Surface gravity 74- 82 F9.4 km/s Vsurf Rotational velocity at the surface 84- 97 F14.4 d Prot Rotation period 99-107 F9.4 km/s Vcrit Beakup velocity (asuming an Eddington factor for pure election scattering) 109-115 F7.4 --- Ge Eddington Γe factor calculated for pure electron scattering 117-124 F8.4 [---] eps(H) [12] Hydrogen surface abundance (G1) 126-133 F8.4 [---] eps(He) Helium surface abundance (G1) 135-142 F8.4 [---] eps(B) Boron surface abundance (G1) 144-150 F7.4 [---] eps(C) Carbon surface abundance (G1) 152-158 F7.4 [---] eps(N) Nitrogen surface abundance (G1) 160-166 F7.4 [---] eps(O) Oxygen surface abundance (G1) 168-174 F7.4 [---] eps(Ne) Neon surface abundance (G1) 176-182 F7.4 [---] eps(Na) Sodium surface abundance (G1) 184-190 F7.4 [---] eps(Mg) Magnesium surface abundance (G1) 192-198 F7.4 [---] eps(Si) Silicium surface abundance (G1) 200-208 F9.6 --- H1mf Surface mass fraction of H1 isotope 210-218 F9.6 --- He4mf Surface mass fraction of He4 isotope 220-226 F7.4 Msun Minit Inital Mass 228-235 F8.4 km/s vinit Inital rotational velocity
Global notes: Note (G1): log(element/hydrogen)+12
Acknowledgements: Ines Brott, ines.brott(at)univie.ac.at History: * 23-May-2011 : First version * 07-Jul-2011 : Corrected model files * 10-Nov-2011 : Corrected model files, evol/f*-0.*
(End) Patricia Vannier [CDS] 19-Apr-2011
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