http://arxiv.org/abs/2211.14063
With the 30-m IRAM radio telescope, we observed several massive star forming regions at wavelengths of 3-4 and 2 mm. The temperature of the gas in the sources was estimated from the lines of CH${3}$CCH and from the transitions of the NH$_3$ molecule obtained during observations at the 100-m radio telescope in Effelsberg. As a result, a correlation between the integrated intensity ratios of the $J=1-0$ transitions of H$^{13}$CN and HN$^{13}$C and the kinetic temperature has been obtained. The obtained results allow us to propose the use of the intensity ratio H$^{13}$CN-HN$^{13}$C as a possible temperature indicator of interstellar clouds. We also compared the obtained estimates of the kinetic temperature with the dust temperature $T{dust}$. As a result, no significant correlation was found.
A. Pazukhin, I. Zinchenko, E. Trofimova, et. al.
Mon, 28 Nov 22
67/93
Comments: 16 pages, 7 figures, 2 tables, Accepted for publication in Astronomy Reports (2022)