Abundance calculations for CaC_{2n+1}N (n=1-4) in IRC+10216 indicate observed CaNC originates from larger cyanopolyyne ions requiring molecular rearrangement during recombination.
Discovery of the first Ca-bearing molecule in space: CaNC
1 Pith paper cite this work. Polarity classification is still indexing.
1
Pith paper citing it
abstract
We report on the detection of calcium isocyanide, CaNC, in the carbon-rich evolved star IRC+10216. We derived a column density for this species of (2.0$\pm$0.5)$\times$10$^{11}$ cm$^{-2}$. Based on the observed line profiles and the modelling of its emission through the envelope, the molecule has to be produced in the intermediate and outer layers of the circumstellar envelope where other metal-isocyanides have previously been found in this source. The abundance ratio of CaNC relative to MgNC and FeCN is $\simeq$1/60 and $\simeq$1, respectively. We searched for the species CaF, CaCl, CaC, CaCCH, and CaCH$_3$ for which accurate frequency predictions are available. Only upper limits have been obtained for these molecules.
fields
astro-ph.SR 1years
2026 1verdicts
UNVERDICTED 1representative citing papers
citing papers explorer
-
Ca-bearing cyanopolyynes in IRC+10216
Abundance calculations for CaC_{2n+1}N (n=1-4) in IRC+10216 indicate observed CaNC originates from larger cyanopolyyne ions requiring molecular rearrangement during recombination.