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Observations of neutral atoms in the Rho Ophiuchi cloud

Authors :
Snow, T. P
Joseph, C. L
Meyer, D. M
Source :
Astrophysical Journal, Part 1. 303
Publication Year :
1986
Publisher :
United States: NASA Center for Aerospace Information (CASI), 1986.

Abstract

New observations of lines from neutral atoms in the lines of sight to three stars in the Rho Oph cloud are combined with literature data to look for evidence of density-enhanced regions with higher elemental depletions than those characterizing the cloud as a whole. The depletions inferred from neutral species, however, are comparable to those measured directly from observations of ions, suggesting that no strong density enhancements exist in the observed lines of sight. This conclusion is supported by electron densities derived from the observed ionization fractions, which also show no evidence for a strong variation of density with depth in the cloud. It appears that the overall density (and overall level of depletion) in the cloud is higher than in typical diffuse clouds, despite the apparent lack of strong condensations with enhanced relative depletions.

Subjects

Subjects :
Astrophysics

Details

Language :
English
ISSN :
0004637X
Volume :
303
Database :
NASA Technical Reports
Journal :
Astrophysical Journal, Part 1
Notes :
NSG-7626, , NSF AST-82-14989
Publication Type :
Report
Accession number :
edsnas.19860050129
Document Type :
Report
Full Text :
https://doi.org/10.1086/164087