SIMBAD references

2006MNRAS.367..400H - Mon. Not. R. Astron. Soc., 367, 400-406 (2006/March-3)

Improved HCN/HNC linelist, model atmospheres and synthetic spectra for WZ Cas.

HARRIS G.J., TENNYSON J., KAMINSKY B.M., PAVLENKO Y.V. and JONES H.R.A.

Abstract (from CDS):

We build an accurate data base of 5200 HCN and HNC rotation-vibration energy levels, determined from existing laboratory data. 20000 energy levels in the Harris et al. linelist are assigned approximate quantum numbers. These assignments, lab-determined energy levels and Harris et al. energy levels are incorporated in to a new energy level list. A new linelist is presented, in which frequencies are computed using the lab-determined energy levels where available, and the ab initio energy levels otherwise.

The new linelist is then used to compute new model atmospheres and synthetic spectra for the carbon star WZ Cas. This results in better fit to the spectrum of WZ Cas in which the absorption feature at 3.56µm is reproduced to a higher degree of accuracy than has previously been possible. We improve the reproduction of HCN absorption features by reducing the abundance of Si to [Si/H]=-0.5dex, however, the strengths of the Δv= 2 CS band heads are overpredicted.


Abstract Copyright: 2006 The Authors. Journal compilation © 2006 RAS

Journal keyword(s): molecular data - stars: AGB - stars: atmospheres - stars: carbon - infrared: stars

VizieR on-line data: <CDS Catalogue: VI/121>

Simbad objects: 2

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