All Tables

Table 1: Targets and log of the ISAAC observations. C/O classification shows the basis of classification into oxygen-rich or carbon-rich (cand: candidate) in publications. Opt sp: optical spectra, IR sp: infrared spectra (mainly molecule features), dust: 9.8 $\mu$ m silicate band. $t_{\rm {exp}}$ is the total exposure time in minutes. Observing mode shows either LR or MR and the slit width in arcsec. Observing dates are 12th and 14th December, 2001 for LMC stars, and 24th July 2002 for the SMC and SgrD. Ref: reference for the coordinates.
Table 2: The definition of equivalent width (EW) for the molecular absorption bands. The continuum level is linearly interpolated from the wavelength region in the last column. SiO molecules show three strong bands from 4.0-4.1 $\mu$ m, and $EW_{\rm {SiO}}$ is the total of these three bands.
Table 3: The equivalent width of SiO bands (unit is Å). The date is that of either ISAAC or ISO/SWS observations in ddmmyyformat, which is different from the observing date of the magnitudes. Column four ( $\phi _{\rm {K}}$ ) lists the pulsation phase during the SiO observations, which is estimated from infrared K-band light curve (Whitelock et al. 2003), where 0.0 and 1.0 are the maxima. Uncertainty should be about 0.1. The optical phase ( $\phi _{\rm opt}$ ) is estimated for the ISO sample, based on the AAVSO light curve. The optical phase is usually about 0.1-0.2 of a cycle ahead of the infrared phase. Photometric magnitudes are taken from Trams et al. (1999b) for the LMC sample, and 2MASS for the Galactic sample. Luminosity class and spectral types for Galactic stars are taken from Simbad.
Table 4: Equivalent widths of molecules found in carbon-rich stars. Date ( ddmmyy) shows the observing date of ISAAC or ISO/SWS, which is different from that of photometric observations.