ALMA-IMF XVIII. The assembly of a star cluster: Dense N2H+ (1-0) kinematics in the massive G351.77 protocluster (vol. 696, A202 , 2025)

Sandoval-Garrido N.A.; Stutz A.M.; Alvarez-Gutiérrez, RH; Galván-Madrid R.; Motte F.; Ginsburg A.; Cunningham N.; Reyes-Reyes, S; Redaelli E.; Bonfand M.; Salinas J.; Koley A.; Bernal-Mesina, G; Braine J.; Bronfman L.; et. al.

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 × σvLSR,1 = < VLSR,2 > − X × σvLSR,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 and σvLSR,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 and σvLSR,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.

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