Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...280l..19g&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 280, no. 1, p. L19-L22
Astronomy and Astrophysics
Astronomy
91
Carbon Compounds, Emission Spectra, Line Spectra, Magnesium Compounds, Radicals, Radio Astronomy, Radio Spectra, Stellar Envelopes, Symbiotic Stars, Astronomical Interferometry, Bubbles, Extremely High Frequencies, Infrared Sources (Astronomy), Millimeter Waves
Scientific paper
The emission from the 95 GHz and 98 GHz lines of the MgNC, C4H and C3H radicals has been mapped in IRC+10216 with the Institut de Radio Astronomie Millimetrique (IRAM) Plateau de Bure interferometer; the angular resolution was 4 sec by 3 sec. This emission is very similar for the three species and arises from an expanding hollow shell of radius approximately equal to 15 sec (4.5 x 1016 cm). It differs markedly from the centrally peaked emissions of NaCl, SiO, SiS, CS and CO. The shell-like distribution of the MgNC, C4H and C3H emissions results from a time dependent chemistry. Their patchy appearance reflects a clumpy gas distribution. The close correspondence between the emission peaks of the three species suggests a fast common formation mechanism, such as desorption from dust grains. The shell where MgNC and the carbon-chains are detected is displaced by 2 sec from the compact mm/IR source. This offset could be the signature of a binary star.
Cernicharo Jose
Guélin Michel
Lucas Robert
No associations
LandOfFree
MgNC and the carbon-chain radicals in IRC+10216 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 MgNC and the carbon-chain radicals in IRC+10216, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and MgNC and the carbon-chain radicals in IRC+10216 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-777655