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Table 2:

The 4 S-type stars with significant emission features at 6.2, 7.9, and 11.2 $\mu $m.

Stellar parameters 		6.2 $\mu $m 7.9 $\mu $m 11.2 $\mu $m

Name 		$T_{{\rm eff}}$a C/Oa Fluxb Classc $\lambda_{\rm peak}$ $\lambda_{\rm cen}$ Fluxb Fluxb
  K   erg cm-2 s-1   $\mu $m $\mu $m erg cm-2 s-1 erg cm-2 s-1

CSS 173 		$3600 \pm 150$ $0.97 \pm 0.01$ $3.0 \pm 0.7 \times 10^{-13}$ C $8.25 \pm 0.05$ $8.38 \pm 0.10$ $1.6 \pm 0.2 \times 10^{-12}$ $1.1 \pm 0.2 \times 10^{-13}$
KR Cam $3400 \pm 150$ $0.97 \pm 0.01$ $6.2 \pm 0.6 \times 10^{-13}$ C $8.16 \pm 0.05$ $8.31 \pm 0.06$ $1.5 \pm 0.1 \times 10^{-12}$ $1.3 \pm 0.2 \times 10^{-13}$
BZ CMa $3400 \pm 150$ $0.98 \pm 0.01$ $20 \pm 2 \times 10^{-13}$ B $7.97 \pm 0.04$ $8.02 \pm 0.04$ $3.4 \pm 0.2 \times 10^{-12}$ $9.8 \pm 0.5 \times 10^{-13}$
CSS 757 $3400 \pm 150$ $0.97 \pm 0.01$ $5.6 \pm 0.7 \times 10^{-13}$ C $8.27 \pm 0.05$ $8.47 \pm 0.06$ $2.2 \pm 0.2 \times 10^{-12}$ $1.1 \pm 0.3 \times 10^{-13}$

Notes. (a) Derived from the comparison of low-resolution spectroscopy with a dedicated grid of MARCS model atmospheres for S-type stars (Plez et al. in preparation, Gustafsson et al. 2008). The low-resolution spectroscopy was obtained for the complete sample of S-type stars, with the William Hershel Telescope on La Palma for the sources in the northern sky (range: 4100 Å-8300 Å; resolution: 2 Å) and with the 1.9 m telescope at the South African Astronomical Observatory for the southern targets (range: 4900 Å-7800 Å; resolution: 4 Å). The entire dataset will be presented in a forthcoming paper. (b) Integrated line flux of the residual flux in the interval [6.12,6.5] $\mu $m, [7.4,9.0] $\mu $m, or [10.9,11.8] $\mu $m. (c) According to Peeters et al. (2002).


Source LaTeX | All tables | In the text

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