Additional observations of the unidentified infrared features at 3. 28 and 3. 4 microns

Journal Article · Thu Apr 01 04:00:00 EST 1976 · Astrophys. J., Lett.; (United States)

DOI:https://doi.org/10.1086/182219· OSTI ID:7181678

Grasdalen, G L; Joyce, R R

The unidentified emission features at 3.28 and 3.4 ..mu.. are reported in two galactic H ii regions: the Orion Nebula and M17. Observations of NGC 7027 with spectral resolution of lambda/Xlambdaapprox. =300 show that the feature at 3.28 ..mu.. is not a single spectral line. The feature consists of a continuum or several closely spaced lines. It is pointed out that a marginally plausible identification of the features may be the fundamental bands of CH/sup +/. (AIP)

• OSTI ID: 7181678
• Journal Information: Astrophys. J., Lett.; (United States), Journal Name: Astrophys. J., Lett.; (United States) Vol. 205:1; ISSN AJLEA
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CARBON COMPOUNDS
COSMIC RADIO SOURCES
EMISSION SPECTRA
H2 REGIONS
HYDROGEN COMPOUNDS
INFRARED SPECTRA
INTERSTELLAR GRAINS
NEBULAE
OXYGEN COMPOUNDS
PARTICLES
PLANETARY NEBULAE
RESOLUTION
SILICATES
SILICON COMPOUNDS
SPECTRA