The Far-Infrared Spectrum of Hydrogenated Amorphous Carbon and the 21, 27, and 33 Micron Features in Carbon-rich Proto-Planetary Nebulae

Details The Far-Infrared Spectrum of Hydrogenated Amorphous Carbon and the 21, 27, and 33 Micron Features in Carbon-rich Proto-Planetary Nebulae The Far-Infrared Spectrum of Hydrogenated Amorphous Carbon and the 21, 27, and 33 Micron Features in Carbon-rich Proto-Planetary Nebulae

Sep 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001apj...558l.129g&link_type=abstract

The Astrophysical Journal, Volume 558, Issue 2, pp. L129-L132.

Astronomy and Astrophysics

Astronomy

17

Stars: Circumstellar Matter, Infrared: Ism, Infrared: Stars, Ism: Lines And Bands, Ism: Molecules, Stars: Agb And Post-Agb

Scientific paper

We report laboratory emission spectra of hydrogenated amorphous carbon (HAC) in the wavelength range 19 μm<λ<120 μm (525-83 cm-1) at temperatures between 300°C and 500°C. These spectra show emission features at 21, 27, and ~33 μm (475, 370, and 303 cm-1) that can be identified with similar bands in the far-infrared spectra of extreme carbon stars, proto-planetary nebulae, and planetary nebulae. It is suggested that HAC is present in these objects but that the chemical composition of this material depends on the evolutionary state. We also detect a number of broad features at wavelengths longer than 40 μm, attributable to chemical groups in HAC. A strong feature is observed at ~60 μm (165 cm-1) in laboratory spectra and may be present in spectra of the carbon-rich planetary nebula CPD -56°8032. We briefly discuss the nature of the chemical groups responsible for the appearance of these features.

Affiliated with

Also associated with

No associations

Rating

The Far-Infrared Spectrum of Hydrogenated Amorphous Carbon and the 21, 27, and 33 Micron Features in Carbon-rich Proto-Planetary Nebulae 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 The Far-Infrared Spectrum of Hydrogenated Amorphous Carbon and the 21, 27, and 33 Micron Features in Carbon-rich Proto-Planetary Nebulae, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Far-Infrared Spectrum of Hydrogenated Amorphous Carbon and the 21, 27, and 33 Micron Features in Carbon-rich Proto-Planetary Nebulae will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1484633