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Table 2
HDO line components observed towards IRAS 4A and IRAS 4B.
| Broad emission component | Narrow emission component | Absorption component | ||||||||
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| Frequency | J Ka,Kc |
|
FWHM | νLSR |
|
FWHM | νLSR |
|
FWHM | νLSR |
| (GHz) | (K) | (km s-1) | (km s-1) | (K) | (km s-1) | (km s-1) | (K) | (km s-1) | (km s-1) | |
|
|
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| NGC 1333 IRAS 4A | ||||||||||
|
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| 80.5783 | 11,0–11,1 | – | – | – | 0.013 ± 0.003 | 1.4 ± 0.4 | 5.8 ± 0.2 | – | – | – |
| 225.8967 | 31,2–22,1 | – | – | – | 0.032 ± 0.004 | 7.9 ± 0.9 | 6.0 ± 0.4 | – | – | – |
| 241.5616 | 21,1–21,2 | – | – | – | 0.047 ± 0.006 | 5.4 ± 0.9 | 7.9 ± 0.4 | – | – | – |
| 464.9245 | 10,1–00,0 | 0.12 ± 0.02 | 15.9a | 5.9a | 0.25 ± 0.05 | 1.8 ± 0.5 | 7.0 ± 0.3 | −0.62 ± 0.07 | 0.9 ± 0.1 | 7.7 ± 0.1 |
| 893.6387 | 11,1–00,0 | 0.040 ± 0.002 | 15.9 ± 0.6 | 5.9 ± 0.2 | 0.14 ± 0.01 | 2.0 ± 0.1 | 7.2 ± 0.1 | −0.38 ± 0.01 | 1.2 ± 0.1 | 7.6 ± 0.1 |
|
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| NGC 1333 IRAS 4B | ||||||||||
|
|
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| 80.5783 | 11,0–11,1 | – | – | – | 0.006 ± 0.002 | 5 ± 2 | 8.2 ± 0.7 | – | – | – |
| 241.5616 | 21,1–21,2 | – | – | – | 0.014 ± 0.002 | 4.3 ± 0.8 | 6.9 ± 0.3 | – | – | – |
| 464.9245 | 10,1–00,0 | 0.08 ± 0.02 | 10.0a | 6.8a | 0.6 ± 0.4 | 1.1 ± 0.2 | 7.0 ± 0.4 | −0.6 ± 0.6 | 0.7 ± 0.3 | 7.4 ± 0.1 |
| 599.9267 | 21,1–20,2 | – | – | – | 0.029 ± 0.003 | 2.7 ± 0.4 | 7.6 ± 0.2 | – | – | – |
| 893.6387 | 11,1–00,0 | 0.044 ± 0.003 | 10.0 ± 0.4 | 6.8 ± 0.2 | 0.22 ± 0.03 | 2.0 ± 0.1 | 7.4 ± 0.1 | −0.39 ± 0.01 | 1.3 ± 0.1 | 7.6 ± 0.1 |
Notes. Obtained from Gaussian fits to each component using the Levenberg-Marquardt algorithm (Levenberg 1944; Marquardt 1963). The uncertainties are statistical and do not include the calibration uncertainties.
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