Open AccessHydrated sulphuric acid in dense molecular clouds
Author(s) -
Scappini Flavio,
CecchiPestellini Cesare,
Smith Harvey,
Klemperer William,
Dalgarno Alexander
Publication year - 2003
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1046/j.1365-8711.2003.06443.x
Subject(s) - physics , molecular cloud , infrared , astrophysics , spectral line , interstellar cloud , interstellar medium , young stellar object , infrared spectroscopy , component (thermodynamics) , astrochemistry , astrobiology , sulfur , cosmic dust , star formation , chemical physics , astronomy , chemistry , stars , galaxy , thermodynamics , organic chemistry , quantum mechanics
We consider sulphur depletion in dense molecular clouds, and suggest hydrated sulphuric acid, H 2 SO 4 · n H 2 O, as a component of interstellar dust in icy mantles. We discuss the formation of hydrated sulphuric acid in collapsing clouds and its instability in heated regions in terms of the existing hot core models and observations. We also show that some features of the infrared spectrum of hydrated sulphuric acid have correspondence in the observed spectra of young stellar objects.