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Table 1:

Stellar populations of red and blue disk LSBGs.

blue LSBGs red LSBGs
age(t, Gyr) young $(t \leq 0.5)$ 58.8 38.9
  intermediate $(0.64 \leq t \leq 2.5)$ 35.3 27.8
  old $(t \geq 5.0)$ 5.9 33.3
$Z/Z_{\odot}$ 0.2 58.8 35.3
  1 29.4 47.1
  2.5 11.8 17.6

Notes. Results of fitting the combined spectra by using STARLIGHT with 45 SSPs from Bruzual & Charlot (2003). The contributed light fractions in three age-bins (young populations with age ${\leq} 5 \times 10^8$ yr, intermediate populations with $6.4 \times 10^8~{\rm yr} \leq {\rm age} \leq 2.5 \times 10^9$ yr and old populations with age ${\geq} 5.0 \times 10^9$ yr) and three metallicities (0.2, 1.0 and 2.5 $Z_\odot$) are presented. It is noticed that the percent fractions here are slightly different from the xj component output by STARLIGHT directly.

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