Search for Interstellar monohydric Thiols

Abstract

It has been pointed out by various astronomers that very interesting relationship exists between interstellar alcohols and the corresponding thiols (sulfur analogue of alcohols) as far as the spectroscopic properties and chemical abundances are concerned. Monohydric alcohols such as methanol and ethanol are widely observed and 1-propanol is recently claimed to have been seen in Orion KL. Among the monohydric thiols, methanethiol (chemical analogue of methanol), has been firmly detected in Orion KL and Sgr B2(N2) and ethanethiol (chemical analogue of ethanol) has been claimed to be observed in Sgr B2(N2) though the confirmation of this detection is yet to come. It is very likely that higher order thiols could be observed in these regions. In this paper, we study the formation of monohydric alcohols and their thiol analogues. Based on our quantum chemical calculation and chemical modeling, we find that `Tg' conformer of 1-propanethiol is a good candidate of astronomical interest. We present various spectroscopically relevant parameters of this molecule to assist its future detection in the Interstellar medium (ISM).

13 pages, 4 figures, Accepted for publication in The Astrophysical Journal

References in corpus (11)

• Formation of methyl formate and other organic species in the warm-up phase of hot molecular cores
• Simulation of the Formation and Morphology of Ice Mantles on Interstellar Grains
• A new study of an old sink of sulfur in hot molecular cores: the sulfur residue
• Formation of water and methanol in star forming molecular clouds
• Effects of Initial Condition and Cloud Density on the Composition of the Grain Mantle
• Effective grain surface area in the formation of molecular hydrogen in interstellar clouds
• Time evolution of simple molecules during proto-star collapse
• Study of the chemical evolution and spectral signatures of some interstellar precursor molecules of adenine, glycine alanine
• The Possibility of Forming Propargyl Alcohol in the Interstellar Medium
• Search for Interstellar Adenine
• Monte Carlo simulation to investigate the formation of molecular hydrogen and its deuterated forms

Cited by in corpus (3)

• Efficient Production of S${}_8$ in Interstellar Ices: The effects of cosmic ray-driven radiation chemistry and non-diffusive bulk reactions
• Qualitative observation of reversible phase change in astrochemical ethanethiol ices using infrared spectroscopy
• A First Look for Molecules between 103 and 133 MHz using the Murchison Widefield Array