Table 1: Images of M 33 used in this study.

Wavelength	Resolution	Telescope
20 cm		VLA 1
20 cm		Effelsberg 2
3.6 cm		Effelsberg1
160 m		Spitzer3
70 m		Spitzer3
24 m		Spitzer3
6570Å (H)	(pixel size)	KPNO4

1 Tabatabaei et al. (in prep.). 2 Fletcher (2001). 3 Hinz et al. (2004) and this paper. 4 Hoopes & Walterbos (2000).