TABLE 1 

From the following article:

Chemical complexity in the winds of the oxygen-rich supergiant star VY Canis Majoris

L. M. Ziurys, S. N. Milam, A. J. Apponi & N. J. Woolf

Nature 447, 1094-1097(28 June 2007)

doi:10.1038/nature05905

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Table 1. Molecular abundances in VY Canis Majoris.

Figures & Tables index
Molecule*Source radius (arcsec) Abundance relative to H2
 Spherical windRed/blue flowSpherical windRed-shifted flowBlue-shifted flow

Abundances are relative to H2. Abundances and source sizes were derived by modelling the line profiles, assuming an appropriate geometry and mass loss rate. In almost all cases, at least two transitions were simultaneously fitted to establish abundances. Collisional excitation was assumed. See Supplementary Information for details.

*Bold denotes first time observed towards VY CMa.

†Ref. 28.

‡Ref. 29.

CN68.52 times 10-83 times 10-81 times 10-8
CO68.55 times 10-56 times 10-58 times 10-5
CS0.50.71 times 10-74 times 10-81 times 10-7
H2O0.1 4 times 10-4†  
H2S68.57 times 10-82 times 10-71 times 10-7
HCN33.58 times 10-54 times 10-54 times 10-5
HCO+68.52 times 10-82 times 10-82 times 10-8
HNC 0.7 2 times 10-82 times 10-8
NaCl0.25 8 times 10-9  
NH3   4 times 10-6‡4 times 10-6‡
NS 8.5 1 times 10-86 times 10-9
OH   masermaser
PN0.5 4 times 10-8  
SiO6 approx1 times 10-5  
SiS0.50.77 times 10-62 times 10-67 times 10-7
SO 8.5 5 times 10-84 times 10-8
SO2 8.5 4 times 10-73 times 10-7
Figures & Tables index
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