Spatial distribution of interstellar dust in the Sun's vicinity - Comparison with neutral sodium-bearing gas

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Table 1:

Distribution of the sample stars into four Strömgren groups (before parallax selection).
Group	Spectral type	Luminosity class	$\beta$	Number of stars	Calibration
1	B0 to A0	III to V	$2.59<\beta<2.88$	993	Crawford (1978)
2	A0 to A3	III to V	$2.87<\beta<2.93$	626	Hilditch et al. (1983)
3	A3 to F0	III to V	$2.72<\beta<2.88$	1517	Crawford (1979)
4	F0 to G2	III to V	$2.56<\beta<2.72$	3857	Crawford (1975)
TOTAL				6993

Source LaTeX | All tables | In the text

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