Ⅰ. INTRODUCTION A pure Doppler profile without self-absorption is a Gaussian profile If the source function is not frequency dependent in the region of spectrum and selfabsorption exists, we can write Eq. (1)
文摘Ⅰ. INTRODUCTION A pure Doppler profile without self-absorption is a Gaussian profile If the source function is not frequency dependent in the region of spectrum and selfabsorption exists, we can write Eq. (1)