Table 1.
Timescales for core He-burning models at solar, LMC, and SMC metallicity.
| Minit (M⊙) | Z | log LHe | tHe (yr) | tBSG (yr) | tRSG (yr) | % tRSG | B/R |
|---|---|---|---|---|---|---|---|
| 20 | Z⊙ | 5.0622 | 862176 | 179694 | 682481 | 79.16 | 0.263 |
| 25 | Z⊙ | 5.2978 | 670013 | 66537 | 6569230 | 90.07 | 0.110 |
| 30 | Z⊙ | 5.4520 | 435955 | 22422 | 176961 | 94.86 | 0.054 |
| 35 | Z⊙ | 5.5598 | 305292 | 15672 | 603476 | 94.87 | 0.055 |
| 40 | Z⊙ | 5.6413 | 189269 | 12307 | 176961 | 93.50 | 0.070 |
| 45 | Z⊙ | 5.6899 | 116566 | 10113 | 106453 | 91.32 | 0.095 |
| 50 | Z⊙ | 5.7507 | 29658 | 9083 | 20574 | 69.37 | 0.442 |
| 55 | Z⊙ | 5.8228 | 45261 | 7385 | 37876 | 83.68 | 0.195 |
| 60 | Z⊙ | 5.8842 | 25656 | 7327 | 18328 | 71.44 | 0.399 |
| 20 | ZLMC | 5.1178 | 917555 | 774735 | 142820 | 15.56 | 5.425 |
| 25 | ZLMC | 5.3330 | 6956648 | 532495 | 163085 | 23.45 | 4.821 |
| 30 | ZLMC | 5.4828 | 610123 | 570334 | 39789 | 6.52 | 14.334 |
| 35 | ZLMC | 5.5560 | 528338 | 463547 | 64790 | 12.26 | 7.155 |
| 40 | ZLMC | 5.6554 | 492070 | 488921 | 3149 | 0.64 | 155.244 |
| 45 | ZLMC | 5.7264 | 449172 | 372011 | 77160 | 17.18 | 4.821 |
| 50 | ZLMC | 5.8215 | 64835 | 64834 | – | 0 | – |
| 55 | ZLMC | 5.9589 | 199940 | 199939 | – | 0 | – |
| 60 | ZLMC | 5.9800 | 57607 | 57606 | – | 0 | – |
| 20 | ZSMC | 5.1181 | 892962 | 870237 | 22724 | 2.55 | 38.29 |
| 25 | ZSMC | 5.3437 | 687509 | 665022 | 22486 | 3.27 | 29.57 |
| 30 | ZSMC | 5.5125 | 595742 | 527794 | 67947 | 11.41 | 7.77 |
| 35 | ZSMC | 5.6076 | 524646 | 514410 | 10235 | 1.95 | 50.26 |
| 40 | ZSMC | 5.7066 | 473388 | 465997 | 7390 | 1.56 | 63.05 |
| 45 | ZSMC | 5.7829 | 446112 | 438579 | 7533 | 1.68 | 58.22 |
| 50 | ZSMC | 5.8599 | 419623 | 4121689 | 7454 | 1.78 | 55.29 |
| 55 | ZSMC | 5.9071 | 388815 | 383790 | 5025 | 1.29 | 76.38 |
| 60 | ZSMC | 5.9477 | 376330 | 371621 | 4708 | 1.25 | 78.93 |
Notes. Comparisons of time spent at hot (log Teff > 3.6) or cool (log Teff < 3.6) supergiant temperatures demonstrates the respective B/R ratio (tBSG/tRSG) for a range of initial masses and metallicities. The luminosity is determined at the bottom of the Hayashi track.
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