2016/12/23 by Liton Majumdar, L. Majumdar, P. Gratier +9 · 1 citation
Chemistry · Earth and Planetary Sciences · Physics and Astronomy · #Advanced Chemical Physics Studies #Astrochemistry #Astrophysics #Atmospheric Ozone and Climate #Atomic physics #Chemical physics #Chemistry #Deuterium #Galaxy #Hydrogen #Interstellar medium #Isotopologue #Molecular Spectroscopy and Structure #Molecule #Organic chemistry #Physics #Spin (aerodynamics) #astro-ph.GA
paper · pdf · doi:10.1093/mnras/stw3360
Accepted for publication in MNRAS on Dec. 22nd
arxiv created 2016/12/23 · openalex publication_date 2016/12/24 · openalex created_date 2017/01/06 · arxiv updated 2017/01/18 · openalex updated_date 2026/08/05
Deuterated species are unique and powerful tools in astronomy since they can probe the physical conditions, chemistry, and ionization level of various astrophysical media. Recent observations of several deuterated species along with some of their spin isomeric forms have rekindled the interest for more accurate studies on deuterium fractionation. This paper presents the first publicly available chemical network of multiply deuterated species along with spin chemistry implemented on the latest state-of-the-art gas-grain chemical code `NAUTILUS'. D/H ratios for all deuterated species observed at different positions of TMC-1 are compared with the results of our model, which considers multiply deuterated species along with the spin chemistry of light hydrogen bearing species H2, H2+, H3+ and their isotopologues. We also show the differences in the modeled abundances of non-deuterated species after the inclusion of deuteration and spin chemistry in the model. Finally, we present a list of potentially observable deuterated species in TMC-1 awaiting detection.