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 CH3βCCH and from the transitions of
the NH3β 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=1β0 transitions of H13CN and HN13C and the kinetic
temperature has been obtained. The obtained results allow us to propose the use
of the intensity ratio H13CN-HN13C as a possible temperature
indicator of interstellar clouds. We also compared the obtained estimates of
the kinetic temperature with the dust temperature Tdustβ. As a result, no
significant correlation was found.Comment: 16 pages, 7 figures, 2 tables, Accepted for publication in Astronomy
Reports (2022