Spectroscopy of the Kleinmann-Low nebula - scattering in a solid absorption band

Journal Article · Thu Oct 01 04:00:00 EDT 1987 · Astron. J.; (United States)

DOI:https://doi.org/10.1086/114530· OSTI ID:5605330

Knacke, R F; Mccorkle, S M

Spectroscopic observations (2.4-3.6 microns) of BN, IRc 2, 3, and 4, and three scattering locations in the KL reflection nebula are reported. A previous report (Knacke et al., 1982) of a 2.97-micron spectral feature in the BN object is not confirmed in the new data. The 2.97-micron feature is observed in sources in the KL nebula, and the spectrum is distorted by a nearby hydrogen line. All the spectra are dominated by absorption along the radiation path, making scattering effects difficult to separate. Scattering could broaden the 3.1-micron interstellar-ice feature, but the effects appear to be small. Except for a long-wavelength wing, the spectra can be modeled reasonably well with core-mantle, silicate-water-ice grains. The wing position and intensity indicate bands of C-H groups of ammonia-ice mixtures. 30 references.

• Research Organization: New York State Univ., Stony Brook
• OSTI ID: 5605330
• Journal Information: Astron. J.; (United States), Journal Name: Astron. J.; (United States) Vol. 94; ISSN ANJOA
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABSORPTION SPECTRA
FLUORESCENCE
INTERSTELLAR SPACE
LUMINESCENCE
MATHEMATICAL MODELS
NEBULAE
RESONANCE FLUORESCENCE
SPACE
SPECTRA
SPECTROSCOPY