We present the results of our studies of deuterated molecules (DCN, DNC, DCO+, N2D+ and NH2D) in regions of high-mass star formation, which include a survey of such regions with the 20-m Onsala radio telescope and mapping of several objects in various lines with the 30-m IRAM and 100-m MPIfR radio telescopes. The deuteration degree reaches ∼10−2 in these objects. We discuss its dependencies on the gas temperature and velocity dispersion, as well as spatial distributions of deuterated molecules. We show that the H13CN/HN13C intensity ratio may be a good indicator of the gas kinetic temperature and estimate densities of the investigated objects.
@article{arxiv.2209.07832,
title = {Deuterated molecules in regions of high-mass star formation},
author = {Igor I. Zinchenko and Andrey G. Pazukhin and Elena A. Trofimova and Peter M. Zemlyanukha and Christian Henkel and Magnus Thomasson},
journal= {arXiv preprint arXiv:2209.07832},
year = {2022}
}
Comments
8 pages, 4 figures, to be published in Proceedings of Science (Proceedings of the conference "The Multifaceted Universe: Theory and Observations - 2022", 23-27 May 2022, SAO RAS, Nizhny Arkhyz, Russia)