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Title:
Detection of interstellar sodium hydroxide in self-absorption toward the galactic center
Authors:
Hollis, J. M.; Rhodes, P. J.
Affiliation:
AA(NASA, Godard Space Flight Center, Laboratory for Astronomy and Solar Physics, Greenbelt, MD), AB(National Radio Astronomy Observatory, Tucson, AZ)
Publication:
Astrophysical Journal, Part 2 - Letters to the Editor, vol. 262, Nov. 1, 1982, p. L1-L5. (ApJL Homepage)
Publication Date:
11/1982
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
Interstellar Chemistry, Milky Way Galaxy, Molecular Clouds, Molecular Spectra, Self Absorption, Sodium Hydroxides, Emission Spectra, Galactic Nuclei, H Lines, Orion Nebula, Transition Probabilities
DOI:
10.1086/183900
Bibliographic Code:
1982ApJ...262L...1H

Abstract

A weak self-absorbed emission line, which is identified as the J = 4-3 transition of sodium hydroxide, has been detected in the direction of Sgr B2(OH). The correspondingly weak Sgr B2(QH) emission line U75406, previously reported as an unidentified spectral feature by other investigators, is consistent with the J = 3-2 transition of sodium hydroxide. This detection may represent the first evidence of a grain reaction formation mechanism for simple metal hydroxides. The detection of H62 Delta toward Orion A is also reported.

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Database: Astronomy
Physics
arXiv e-prints