Electron densities, temperatures and ionization rates in two interstellar clouds in front of beta Canis Majoris, as revealed by UV absorption lines observed with IMAPS

Edward B. Jenkins, Cecile Gry, Olivier Dupin

The spectrum of beta CMa (Mirzam) between 1000 and 1200 A was recorded at a wavelength resolving power ~ 60 000 by the Interstellar Medium Absorption Profile Spectrograph (IMAPS) d…