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Table 1
Abbreviations used in the nomenclature of various models.
| Description/parameter | Value | Abbrv. |
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| Cold core models | – | cc |
| Hot molecular core models | – | hmc |
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| Plummer radius | 3000 AU | r3 |
| 3500 AU | r3.5 | |
| 4000 AU | r4 | |
| 4500 AU | r4.5 | |
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| Constant temperature | 10 K | t10 |
| at cold core phase | 15 K | t15 |
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| Luminosity evolution | L2 | l2 |
| during warm-up phase | L4 | l4 |
| L7.5 | l7 | |
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| Cosmic-ray ionization | 1.37 × 10-17 s-1 | cr17 |
| rate | 1.37 × 10-16 s-1 | cr16 |
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