Sign on

SAO/NASA ADS Astronomy Abstract Service


· Find Similar Abstracts (with default settings below)
· Full Refereed Journal Article (PDF/Postscript)
· Full Refereed Scanned Article (GIF)
· References in the article
· Citations to the Article (80) (Citation History)
· Refereed Citations to the Article
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
Observation of interstellar ammonia ice
Authors:
Knacke, R. F.; McCorkle, S.; Puetter, R. C.; Erickson, E. F.; Kraetschmer, W.
Affiliation:
AA(New York, State University, Stony Brook, NY; Max-Planck-Institut für Kernphysik, Heidelberg, Germany), AB(New York, State University, Stoney Brook, NY), AC(California, University, San Diego, CA), AD(NASA, Ames Research Center, Moffett Field, CA), AE(Max-Planck-Institut für Kernphysik, Heidelberg, Germany)
Publication:
Astrophysical Journal, Part 1, vol. 260, Sept. 1, 1982, p. 141-146. (ApJ Homepage)
Publication Date:
09/1982
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
Ammonia, Infrared Spectra, Interstellar Matter, Molecular Clouds, Orion Nebula, Solidified Gases, Ice, Infrared Absorption, Infrared Stars, Spectral Bands
DOI:
10.1086/160241
Bibliographic Code:
1982ApJ...260..141K

Abstract

An absorption band probably due to solid ammonia on interstellar grains has been detected in the infrared spectrum at 2.97 microns of the Becklin-Neugebauer object and probably in NGC 2264-IR. An ammonia-water amorphous ice mixture can explain the structure of the new band and of the 3.07 microns interstellar absorption. Laboratory data suggest that a long wavelength wind extending to 3.5 microns in interstellar dust spectra may be absorption by NH3-H2O complexes in the ices. In the molecular cloud obscuring the BN object, about 20 times as much NH3 is frozen in grains as exists in the gas phase, suggesting the gas-grain interactions may be important in the ammonia chemistry of molecular clouds. Arguments are given that interstellar features at 6.0 and 6.8 microns are also ammonia-related absorptions.

Printing Options

Print whole paper
Print Page(s) through

Return 600 dpi PDF to Acrobat/Browser. Different resolutions (200 or 600 dpi), formats (Postscript, PDF, etc), page sizes (US Letter, European A4, etc), and compression (gzip,compress,none) can be set through the Printing Preferences



More Article Retrieval Options

HELP for Article Retrieval


Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)


Find Similar Abstracts:

Use: Authors
Title
Keywords (in text query field)
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints