Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999apj...526l..41c&link_type=abstract
The Astrophysical Journal, Volume 526, Issue 1, pp. L41-L44.
Astronomy and Astrophysics
Astronomy
47
Stars: Circumstellar Matter, Infrared: Stars, Radiative Transfer, Stars: Agb And Post-Agb, Stars: Atmospheres, Stars: Individual: Alphanumeric: Irc +10216
Scientific paper
We present the Infrared Space Observatory/Short-Wavelength Spectrometer full grating resolution spectrum of IRC +10216, which is dominated by strong absorption/emission bands of C2H2 and HCN. All C2H2 bands and the strong near-infrared stretching bands of HCN are observed in absorption, whereas the fundamental, hot, and combination bands of HCN involving the ν2 bending mode around 14 μm are observed in emission. Particularly strong is the HCN ν2=20-->ν2=11 vibrational transition at 14.3 μm. The most plausible mechanism for such emission is the radiative pumping of molecules from the ground to the ν2=20 state (7.1 μm) followed by radiative decay: ν2=20-->ν2=11. We present detailed models for HCN that verify the efficiency of the mentioned effect. The HCN abundance inferred from these models is (1.5-3)x10-5.
Cernicharo Jose
de Jong Teije
Escribano Rafael
Gonzalez-Alfonso Eduardo
Heras Ana
No associations
LandOfFree
The ISO/SWS Spectrum of IRC +10216: The Vibrational Bands of C2H2 and HCN 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 ISO/SWS Spectrum of IRC +10216: The Vibrational Bands of C2H2 and HCN, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The ISO/SWS Spectrum of IRC +10216: The Vibrational Bands of C2H2 and HCN will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1284889