ALMA-IMF XVIII. The assembly of a star cluster: Dense N2H+ (1-0) kinematics in the massive G351.77 protocluster (vol. 696, A202 , 2025)
Keywords: errata, addenda, stars: formation, ism: clouds, ism: kinematics and dynamics, ism: molecules
Abstract
In the original version of this paper, at the end of Sect. 3.4 we described Eq. (1). < VLSR,1 > + X à ÏvLSR,1 = < VLSR,2 > â X à ÏvLSR,2, (1) as follows: âwhere < VLSR,1 > and < VLSR,2 > are the averaged centroid velocities of the first and second velocity component, respectively, ÏvLSR,1 and ÏvLSR,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.â 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 ÏvLSR,1 and ÏvLSR,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 â 0.86, which yields a middle point of 0.025 km sâ1. 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 sâ1, measured via Eq. (1) (see text). This divides the black histogram into two velocities, as explained in Sect. 3.4. © The Authors 2025.
Más información
| Título según WOS: | ALMA-IMF XVIII. The assembly of a star cluster: Dense N2H+ (1-0) kinematics in the massive G351.77 protocluster (vol. 696, A202 , 2025) |
| Título de la Revista: | Astronomy and Astrophysics |
| Volumen: | 702 |
| Editorial: | EDP Sciences |
| Fecha de publicación: | 2025 |
| Idioma: | English |
| DOI: |
10.1051/0004-6361/202556847e |
| Notas: | ISI |