Table 2
Column densities (in cm−2) and molecular ratios in the IRS 48 and HD 142527 disks.
| Molecules | IRS 48 | HD 142527 |
|---|---|---|
| CS | (a) ≤(5.9±0.6)×1013 | 1.6±0.2)×1013 |
| SO | (a) ≥(4.7±0.5)×1015 | <(1.9±0.2)×1013 |
| H2CO | (7.7±0.5)×1013 | (1.6±0.1)×1014 |
| CH3OH | (4.9±0.2)×1014 | <(1.4±0.1)×1012 |
| CS/SO | ≤0.012 | ≥1.0 |
| H2CO/CH3OH | ~0.2 | ≳114 |
Notes. The column densities were calculated using different beams. For IRS 48, beam sizes of 0.20″×0.16″ were used for both CS and SO, while the H2CO and CH3OH column densities were acquired using a rotational diagram analysis (Ω = 1.4×10−11 sr; van der Marel et al. 2021b). For HD 142527, we used sizes of 0.55″×0.45″ (CS), 0.62″×0.47″ (SO), and 0.31″×0.24″ (CH3OH), and we acquired the H2CO column density through a rotational diagram analysis (Ω = 4.1×10−11 sr; see Sect. 2.5). (a) The CS and SO column densities for IRS 48 were taken at a rotational temperature of Trot = 50 K (Booth et al. 2021a).
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