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Erratum
This article is an erratum for:
[https://doi.org/10.1051/0004-6361/202452589]

Issue
A&A
Volume 702, October 2025
Article Number C6
Number of page(s) 2
Section Interstellar and circumstellar matter
DOI https://doi.org/10.1051/0004-6361/202556847e
Published online 27 October 2025

Erratum for: A&A, 696, A202 (2025), https://doi.org/10.1051/0004-6361/202452589

In the original version of this paper, at the end of Sect. 3.4 we described Eq. (1). < VLSR,1 >+X×σvLSR,1=< VLSR,2 >−X×σvLSR,2,${\rm{ < }}\,{{\rm{V}}_{{\rm{LSR}},1}}\, > + X \times {\sigma _{{{\rm{v}}_{{\rm{LSR}},1}}}} = {\rm{ < }}\,{{\rm{V}}_{{\rm{LSR}},2}}\, > - X \times {\sigma _{{{\rm{v}}_{{\rm{LSR}},2}}}},$(1)

as follows: "where < VLSR,1 > and < VLSR,2 > are the averaged centroid velocities of the first and second velocity component, respectively, σvLSR,1${\sigma _{{{\rm{v}}_{{\rm{LSR,1}}}}}}$ and σvLSR,2${\sigma _{{{\rm{v}}_{{\rm{LSR,2}}}}}}$ are the standard deviations of the centroid velocities in the first and second velocity component, respectively, and X represents the cut-off value used as the middle point, normalized by the standard deviations of the centroid velocity distributions. Applying Eq. (1) we obtain a X=0.025. This value allows us to separate the centroid velocity distribution of the one-velocity-component fit into two parts and combine the measurements with the first and the second velocity component.”

The corrected text should read:

where < VLSR,1 > and < VLSR,2 > are the averaged centroid velocities of the first and second velocity component, respectively, and σvLSR,1${\sigma _{{{\rm{v}}_{{\rm{LSR,1}}}}}}$ and σvLSR,2${\sigma _{{{\rm{v}}_{{\rm{LSR,2}}}}}}$ are the standard deviations of the centroid velocities in the first and second velocity component, respectively. Here, X represents the parameter used to derive the velocity corresponding to the middle point. Applying Eq. (1), we obtain X ≈ 0.86, which yields a middle point of 0.025 km s−1. This value allows us to separate the centroid velocity distribution of the one-velocity-component fit into two parts and combine the measurements with the first and the second velocity component.

In addition, the caption of Fig. 3 should be corrected as follows:

Centroid velocity distributions of the one- and two-velocity-components fits. The black histogram represents the centroid velocity distribution of the spectra fit by the one-velocity-component model. The blue and red histograms show the centroid velocity distributions of the spectra fit with the two-velocity-components model, where blue corresponds to the first velocity component and red to the second. The solid black line represents the middle point located at 0.025 km s−1, measured via Eq. (1) (see text). This divides the black histogram into two velocities, as explained in Sect. 3.4.


© The Authors 2025

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