Astronomy   View all facts   Glossary   Help

abstraction > mathematical concept > number > quantity > radiation measurement > spectral feature > spectral line > absorption line > Fraunhofer line > HK lines

HK lines
subject			fact

HK lines	has definition Two spectral lines of singly ionized calcium. The second strongest interstellar line.
	is a kind of Fraunhofer line
	has species Ca II
Fraunhofer line	has dicovery date 1814
	has discoverer Joseph Fraunhofer
	occurs in Sun
absorption line	has antonym emission line
spectral line	has transition
	has equivalent width
spectral feature	has wavelength
	has width
radiation measurement	has unit radiation unit
number	has value

Kinds of HK lines :

• Ca H line (3 facts) - A spectral line of singly ionized calcium.
• Ca K line (3 facts) - A spectral line of singly ionized calcium.