Table 6
Positional offsets between column density and velocity peaks.
| λ | HGBS 054203.2-02035 | HGBS 054157.3-020101 | HGBS 054153.4-020016 | HGBS 054149.5-015941 | ||
|---|---|---|---|---|---|---|
| Herschel column density | – | peak | z = 0.48 pc | z = 0.81 pc | z = 0.96 pc | z = 1.10 pc |
| peak(obs./fit) | z = 0.59 pc/0.61 pc | z = 0.81 pc/0.81 pc | z = 1.02 pc/1.02 pc | – | ||
| Nobeyama H13CO+ | 0.21 pc | offset(obs./fit) in pc | −0.11 pc/−0.13 pc | 0 pc/0 pc | −0.062 pc/−0.062 pc | – |
| offset(obs./fit) in λ | −0.54±0.12λ/−0.62±0.12λ | 0.00±0.12λ/0.00±0.12λ | −0.30±0.12λ/−0.30±0.12λ | – | ||
| offset(obs./fit) in λ (†) | +0.06±0.12λ/−0.005±0.12λ | – | – | – | ||
| peak(obs./fit) | z = 0.61 pc/0.59 pc | z = 0.83 pc/0.85 pc | – | z = 1.13 pc/1.11 pc | ||
| Nobeyama C18O | 0.26 pc | offset(obs./fit) in pc | −0.13 pc/−0.11 pc | −0.020 pc/−0.040 pc | – | −0.029 pc/−0.038 pc |
| offset(obs./fit) in λ | −0.50±0.09λ/−0.42±0.09λ | −0.07±0.09λ/−0.15±0.09λ | – | −0.11±0.09λ/−0.16±0.09λ | ||
| offset(obs./fit) in λ (†) | +0.05±0.09λ/−0.10±0.09λ | – | – | – | ||
Notes. z measures position along the filament crest shown in Fig. 1. The uncertainties of the positional offsets in units of λ were estimated assuming that the peaks in column density have an uncertainty corresponding to half a beam. (†): Given the additional errors arising from the definition of the curved filament crest around HGBS 054203.2-02035, we also provide offsets estimated assuming a straight filament crest toward this core (see text in Sect. 4.2.1).
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