Universität zu Köln

Schilke, Peter, Lis, Dariusz C., Bergin, Edwin A., Higgins, Ronan and Comito, Claudia (2013). Ortho/Para Ratio of H2O+ Toward Sagittarius B2(M) Revisited. J. Phys. Chem. A, 117 (39). S. 9766 - 9770. WASHINGTON: AMER CHEMICAL SOC. ISSN 1520-5215

Full text not available from this repository.

Abstract

The HIFI instrument aboard the Herschel satellite has allowed the observation and characterization of light hydrides, the building blocks of interstellar chemistry. In this article, we revisit the ortho/para ratio for H2O+ toward the Sgr B2(M) cloud core. The line of sight toward this star forming region passes through several spiral arms and the gas in the Bar potential in the inner Galaxy. In contrast to earlier findings, which used fewer lines to constrain the ratio, we find a ratio of 3, which is uniformly consistent with high temperature formation of the species. In view of the reactivity of this ion, this matches the expectations.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Schilke, Peter UNSPECIFIED UNSPECIFIED UNSPECIFIED Lis, Dariusz C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bergin, Edwin A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Higgins, Ronan UNSPECIFIED UNSPECIFIED UNSPECIFIED Comito, Claudia UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-474231
DOI:	10.1021/jp312364c
Journal or Publication Title:	J. Phys. Chem. A
Volume:	117
Number:	39
Page Range:	S. 9766 - 9770
Date:	2013
Publisher:	AMER CHEMICAL SOC
Place of Publication:	WASHINGTON
ISSN:	1520-5215
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language MOLECULAR LINE SURVEY; SPIRAL ARM CLOUDS; HERSCHEL/HIFI OBSERVATIONS; COLOGNE DATABASE; INTERSTELLAR OH+; SPECTROSCOPY; ABSORPTION; WATER; W49N Multiple languages Chemistry, Physical; Physics, Atomic, Molecular & Chemical Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/47423