SIMBAD references

2000MNRAS.319..103S - Mon. Not. R. Astron. Soc., 319, 103-110 (2000/November-3)

SiC2 in carbon stars: Merrill-Sanford absorption bands between 4100 and 5500Å.

SARRE P.J., HURST M.E. and LLOYD EVANS T.

Abstract (from CDS):

Observations and identifications of the Merrill-Sanford bands of the silicon dicarbide molecule are reported for a range of N and J stars. The data were recorded at 0.8-1.6Å resolution between 4100 and 5500Å. A full description of the assignments and spectral features in the stars is given. The spectra are characterized by absorption from the ground vibrational level (0,0,0) and from higher-lying vibrational levels involving one quantum of excitation in ν1, and up to two quanta in ν2 and ν3, giving rise to numerous hot-bands. The first results of rotational contour calculations are presented, and are consistent with SiC2 lying in the upper atmosphere of the star with a rotational temperature substantially lower than that of the photosphere.

Abstract Copyright: 2000, Royal Astronomical Society

Journal keyword(s): line: identification - molecular processes - stars: atmospheres - stars: carbon

Simbad objects: 13

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2020.02.19-03:13:39

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