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5. Some physical parameters of the program stars

Table 2 (click here) lists the SMC- and LMC objects, and Table 3 (click here) the galactic objects, respectively, identified by their numbers, the spectral type, for the SMC and LMC only the galactic foreground reddening (see further), the adopted reddening, the mean Hp and tex2html_wrap_inline1872 magnitude, tex2html_wrap_inline2084 = tex2html_wrap_inline2086, the maximum range ever observed (only the micro variations if an eclipse, or an SD (S Dor)-type variability is involved), tex2html_wrap_inline2222 (for most of the stars derived from the spectral type calibration of de Jager & Nieuwenhuijzen 1987) and at last tex2html_wrap_inline1826. For the SMC and LMC tex2html_wrap_inline1826 is in most cases based on the distance moduli 19.1 and 18.6, respectively, or are based on an indirect method. For the galactic objects tex2html_wrap_inline1826 is taken from various references.

The galactic foreground reddening tex2html_wrap_inline2218 of the Magellanic Cloud objects were extracted from Figs. 7b, c of Schwering & Israel (1991). They used the HI distribution to separate the galactic infrared emission in front of the Clouds themselves and constructed maps of the smoothed galactic foreground colour excess tex2html_wrap_inline2218 distribution towards the Clouds. It should be emphasized that apart from local fluctuations, smaller than the resolution of tex2html_wrap_inline2582, these values are only a lower limit. The reddening in the Clouds should be added, but in most cases it is unknown. If a literature value for the total reddening is known, but lower than the galactic foreground reddening, the latter is used for the determination of tex2html_wrap_inline1826 instead of the literature value. If no literature value is known then it is derived from the spectrum/tex2html_wrap_inline2328 relationship (Schmidt-Kaler 1982) and the observed tex2html_wrap_inline2588. If this reddening is lower than the galactic foreground reddening, the latter is used. Therefore, in many cases tex2html_wrap_inline1826 is presumably a lower limit.


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