Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...380..452t&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 380, Oct. 20, 1991, p. 452-460.
Astronomy and Astrophysics
Astrophysics
102
Emission Spectra, H Ii Regions, Infrared Spectra, Interstellar Matter, Planetary Nebulae, Aromatic Compounds, Cosmic Dust, Hydrocarbons, Pre-Main Sequence Stars, Stellar Evolution
Scientific paper
High spectral resolution observations of the 3.29-micron interstellar emission feature show two types of profiles. Type 1 has a central wavelength of 3.289-micron and is observed in extended objects such as planetary nebulae and H II regions. Type 2 has a central wavelength of 3.296 microns and is observed around a small number of stellar sources. Type 2 has a full width at half-maximum of 0.020 micron; Type 1 has a broader FWHM, perhaps as much as 0.042 micron, but this is uncertain because of contamination by Pf(delta) emission. These profiles are tabulated for comparison to laboratory data. It is found that no proposed identification for the 3.29-micron emission feature definitely matches the observational spectra, although amorphous aromatic materials and heated polycyclic aromatic hydrocarbons tend to fit the best.
Nagata Takahiro
Nakada Yoshikazu
Sakata Ayaka
Sellgren Kris
Smith Gary R.
No associations
LandOfFree
High-resolution spectra of the 3.29 micron interstellar emission feature - A summary does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with High-resolution spectra of the 3.29 micron interstellar emission feature - A summary, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High-resolution spectra of the 3.29 micron interstellar emission feature - A summary will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1875383