Table 1
Properties of Jekyll and Hyde.
| Jekyll | Hyde | |
|---|---|---|
| zspec | 3.7174 ± 0.0009 | 3.7087 ± 0.0004 |
| Dust properties | ||
| S744μm (mJy) | 0.09 ± 0.06 | 2.31 ± 0.14 |
| rdust (kpc) | – | 0.67 ± 0.14 |
| Tdust (K) | 20–35a |  |
| LIR (1012 L⊙)b |  |
 |
| LFIR (1012 L⊙)c |  |
 |
| SFRIR (M⊙ yr−1) |  |
 |
| Mdust (108 M⊙)d |  |
 |
| ΣFIR (1011 L⊙ kpc−2) | – |  |
| [C II] properties | ||
| S[C II] (Jy km s−1) | – | 1.85 ± 0.22 |
| r[C II] (kpc) | – | 0.80 ± 0.24 |
| L[C II] (108 L⊙) | – | 8.4 ± 1.0 |
| log10(L[C II]∕LFIR) | – |  |
| v2.2 (km s−1) | – |  |
| σv (km s−1) | – |  |
| T v2.2∕σv | – |  |
| trot (Myr) | – |  |
| Mdyn (1011 M⊙) | – |  |
| Inferred gas properties | ||
| Mgas (1010 M⊙) | <3.5 |  |
| fgas | <25% | 12–70% |
| Σgas (104 M⊙ pc−2) | – |  |
| tff (Myr) | – |  |
| Stellar properties (90% confidence intervals) | ||
| M* (1011 M⊙) | 1.03–1.35 | 0.34–1.28 |
| r* (kpc) | 0.49 ± 0.12e | – |
| Σ* (104 M⊙ pc−2) | 2.2–9.7 | 0.9–6.6f |
| AV (mag) | 0.19–0.48 | 2.68–3.81 |
| SFR 10 Myr (M⊙ yr−1) | 0–0.48 | 0–119 |
| SFR 10 Myr∕SFRMS | 0–10−3 | 0–0.72 |
| SFR 100 Myr (M⊙ yr−1) | 0–0.65 | 0–828 |
| ΣSFR (M⊙ yr−1 kpc−2) | 0–0.18s | 0–61 |
| tb<1% (Myr) | 210–661 | 0–204 |
| tb<30% (Myr) | 337–724 | 0–570 |
| t68% (Myr) | 22g–839 | 22g–1079 |
| t95% (Myr) | 58g–1246 | 58g–1566 |
Notes. (a) This is the range of temperatures assumed to estimate LIR and Mdust for Jekyll only. It is not a measurement. (b) 8–1000 μm. (c) 42.5–122.5 μm. (d) These dust masses correspond to a model with amorphous carbon grains, which provides values a factor 2.6 lower than the graphite-based models commonly used in the literature (e.g., Draine & Li 2007). (e) From Straatman et al. (2015), 68% confidence interval. (f) Assuming that stars follow the same profile as dust. (g) These values are limited by the minimum e-folding times allowed in the grid.
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