Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994apj...426l..97t&link_type=abstract
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 426, no. 2, p. 97-100
Astronomy and Astrophysics
Astrophysics
58
Cyanides, Interstellar Matter, Sodium Compounds, Stellar Envelopes, Stellar Mass Ejection, Astronomical Spectroscopy, Magnesium Compounds, Refractory Metals, Silicon
Scientific paper
The first molecule containing Na has been detected in the outer circumstellar envelope of IRC 10216, by means of four rotational transitions in the 3 and 2mm spectral regions. Observations are well fitted by a low rotation temperature of 11 K, typical of the outer envelope. The column density and fractional abundance depend on the distribution assumed for NaCN, the abundance varying between 6 x 10-9 and 1 x 10-7 for distributions corresponding to HC3N (outer plus intermediate envelope) and HC7N (outer envelope only). The fraction of cosmic Na in the form of NaCN is probably several percent, so the significant amounts of Na escape incorporation into grains, unlike the fraction (less than 0.002) that applies for Si. If IRC 10216 is typical, relative abundance if Na and Si as observed in the diffuse interstellar medium are consistent with rates of ejection in the gas phase from circumstellar envelopes.
Meerts Leo
Steimle Timothy C.
Turner Barry E.
No associations
LandOfFree
Detection of sodium cyanide (NaCN) 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 Detection of sodium cyanide (NaCN) in IRC 10216, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Detection of sodium cyanide (NaCN) in IRC 10216 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-885133