Robert Makemson Guide to Astronomy in Jacksonville

Stellar Evolution

	Grids of Stellar Evolution Models Presupernova Structure of Magnetic Rotating Stars Data from Heger, Woosley, & Spruit (2005) Version 6 -- Sun Sep 26 04:14:16 UTC 2004 Hydro / EOS data explanation column data unit grid cell number --- cell outer total mass mass coordinate at the cell top interface g cell outer radius radius coordinate at the cell top interface cm cell outer velocity velocity of the cell top interface cm s-1 cell density average density of the cell g cm-3 cell temperature average temperature of the cell K cell pressure average pressure of the cell dyn cm-2 cell specific energy average specific energy of the cell erg g-1 cell specific entropy average specific entropy of cell kB baryon-1 cell angular velocity average angular velocity of the cell rad s-1 cell A_bar average mean mass number of nuclei in the cell 1 cell Y_e average electrons per baryon in the cell 1 stability hydrodynamic stability of outer cell boundary --- B_r poloidal magnetic field at outer cell boundary Gauss B_phi azimuthal magnetic field at outer cell boundary Gauss Network data explanation APPROX: approximative 19 isotope network QSE: Quasi Statitstical Equilibrium isotopes treated in three NSE subgroups which are connected by "bottleneck" reactions 137 isotope network for weak rates NSE: Nuclear Statistical Equilibrium 137 isotope network for weak rates column network unit APPROX QSE / NSE neutrons neutrons neutrons (mass fraction) H1 1H protons (mass fraction) He3 3He --- (mass fraction) He4 4He 1 < A < 6 (mass fraction) C12 12C --- (mass fraction) N14 14N --- (mass fraction) O16 16O 16O (unburned yet) (mass fraction) Ne20 20Ne --- (mass fraction) Mg24 24Mg 22 < A < 29, excluding 28Si (mass fraction) Si28 28Si 28Si (mass fraction) S32 32S 28 < A < 36 (mass fraction) Ar36 36Ar 35 < A < 40 (mass fraction) Ca40 40Ca 39 < A < 44 (mass fraction) Ti44 44Ti 43 < A < 48 (mass fraction) Cr48 48Cr 47 < A < 52 (mass fraction) Fe52 52Fe --- (mass fraction) Fe54 54Fe (+56Fe) A approximately 2*Z+2, Iron Peak (mass fraction) Ni56 56Ni A < 2*Z+2, Iron Peak (mass fraction) Fe56 --- 56Fe only (mass fraction) 'Fe' --- A > 2*Z + 3, Iron Peak, excluding 56Fe (mass fraction) The Data Standard Model: Initial solar metallicity, 200 km/s ZAMS equatorial rotation, rotation according to Heger, Langer, & Woosley (2000), magnetic fields according to Spruit (2002); Heger, Woosley, & Spruit (2004) mass (solar masses) standard ZAMS equatorial rotation velocity N2μ N2T BμBφ B = 0 100 km/s 300 km/s 0.1 10 0.1 10 0.1 10 12.0 166 kByte --- --- --- --- --- --- --- --- --- 15.0 173 kByte 172 kByte 174 kByte 172 kByte 172 kByte 171 kByte 172 kByte 176 kByte 172 kByte 183 kByte 20.0 190 kByte 185 kByte 179 kByte 189 kByte 190 kByte 190 kByte 188 kByte 191 kByte 188 kByte 191 kByte 25.0 166 kByte 169 kByte 173 kByte 165 kByte 166 kByte 164 kByte 164 kByte 165 kByte 163 kByte 173 kByte 35.0 198 kByte --- --- --- --- --- --- --- --- --- Full Nucleosynthesis Data Models similar to those of Rauscher, Heger, Hoffman, & Woosley (2002). Full nucleosynthesis data is given only outside the iron core. mass (solar masses) standard B = 0 no rotation 15.0 1.7 MByte 1.6 MByte 1.3 MByte Movies Animation of the evolution of rotation profile and magnetic fields, solar composition, 200 km/s ZAMS equatorial rotation (from Version 5) mass (solar masses) animated gif MPEG-1 15.0 1.8 MByte 2.4 MByte 20.0 2.6 MByte 3.1 MByte 25.0 1.4 MByte 2.0 MByte Explosion Models, 100s (preliminary & unpublished) Note that part of the data sets provided below may be preliminary and that part of them could change without notice. We would appreciate if you contact us before using the data on this site for your publications. Standard Model: Initial solar metallicity, 200 km/s ZAMS equatorial rotation, rotation according to Heger, Langer, & Woosley (2000), magnetic fields according to Spruit (2002); Heger, Woosley, & Spruit (2004). The data files in this section contain only the APPROX 19 isotope network. APPROX Network data explanation column description unit nt1 neutrons (mass fraction) h1 1H (mass fraction) pn1 protons (photodisintegration) (mass fraction) he3 3He (mass fraction) he4 4He (mass fraction) c12 12C (mass fraction) n14 14N (mass fraction) o16 16O (mass fraction) ne20 20Ne (mass fraction) mg24 24Mg (mass fraction) si28 28Si (mass fraction) s32 32S (mass fraction) ar36 36Ar (mass fraction) ca40 40Ca (mass fraction) ti44 44Ti (mass fraction) cr48 48Cr (mass fraction) fe52 52Fe (mass fraction) fe54 54Fe (+56Fe) (mass fraction) ni56 56Ni (mass fraction) 0.6 B Explosion Energy mass (solar masses) standard ZAMS equatorial rotation velocity B = 0 100 km/s 300 km/s 12.0 104 kByte --- --- --- 15.0 116 kByte 125 kByte 109 kByte 113 kByte 20.0 143 kByte 151 kByte 137 kByte 119 kByte 25.0 118 kByte 127 kByte 121 kByte 125 kByte 35.0 161 kByte --- --- --- 1.2 B Explosion Energy mass (solar masses) standard ZAMS equatorial rotation velocity B = 0 100 km/s 300 km/s 12.0 104 kByte --- --- --- 15.0 116 kByte 110 kByte 114 kByte 126 kByte 20.0 143 kByte 137 kByte 119 kByte 151 kByte 25.0 119 kByte 121 kByte 126 kByte 127 kByte 35.0 162 kByte --- --- --- 2.4 B Explosion Energy mass (solar masses) standard ZAMS equatorial rotation velocity B = 0 100 km/s 300 km/s 12.0 104 kByte --- --- --- 15.0 116 kByte 126 kByte 110 kByte 114 kByte 20.0 144 kByte 152 kByte 137 kByte 119 kByte 25.0 119 kByte 127 kByte 121 kByte 126 kByte 35.0 162 kByte --- --- ---