Table 10
CFE for all the subregions in Perseus with at least one bound starless core; where protostars are observed, the lifetime of the prestellar phase is also shown.
| Region | N | NII | N(H2) | M | CFE | Area | Σ(gas) | tpre |
|---|---|---|---|---|---|---|---|---|
| (1021 cm−2) | (M⊙) | (%) | (pc2) | (M⊙ pc−2) | (Myr) | |||
| L1451 | 19 | 2.15 | 165 | 13 | 1.77 | 93 | ||
| L1448 | 18 | 2.37 | 213 | 10 | 1.24 | 172 | ||
| L1455 |  |
4 | 1.55 | 575 | 7.9 | 7.44 | 77 | 18.0 ± 4.0 |
| NGC1333 |  |
59 | 3.18 | 708 | 7.4 | 3.82 | 186 | 0.77 ± 0.34 |
| Per6 | 4 | 3.59 | 56 | 6.9 | 0.47 | 120 | ||
| B1 |  |
8 | 1.67 | 1053 | 3.9 | 10.6 | 99 | 7.7 ± 1.5 |
| B1E | 8 | 3.11 | 146 | 4.4 | 1.47 | 99 | ||
| L1468 | 4 | 2.64 | 82 | 4.3 | 1.11 | 73 | ||
| IC348 |  |
104 | 3.62 | 660 | 8.5 | 5.25 | 126 | 0.78 ± 0.12 |
| B5 | 6 | 2.93 | 109 | 5.8 | 0.98 | 111 | ||
| HPZ1 | 1 | 3.61 | 4.5 | 11 | 0.04 | 106 | ||
| HPZ2 | 1 | 2.08 | 13 | 10 | 0.21 | 61 | ||
| HPZ5 | 1 | 2.55 | 17 | 2.0 | 0.23 | 76 | ||
| HPZ6 | 2 | 3.99 | 9.5 | 21 | 0.08 | 126 | ||
| Perseus |  |
231 | 1.67 | 5960 | 4.5 | 76 | 77 | 1.69 ± 0.52 |
| RC |  |
56 | 2.4 ± 1.1 |
Notes. N: number of prestellar cores; NII : number of Class II objects from Young et al. (2015); N(H2): minimum background column density; M: mass for N(H2) larger than minimum; CFE: core formation efficiency; Area: area for N(H2) larger than minimum; Σ(gas): surface density; tpre: lifetime of prestellar phase. RC (rest of cloud) refers to Perseus without the four regions with independent lifetime estimates (we note that Young et al. 2015 define RC as the whole of Perseus excluding only IC348 and NGC1333).
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