It is a process in which electrons, molecules, or ions join some bulk phase which can be either a solid or a liquid substance. Absorption is the assimilation of the molecular system throughout the ...
ABSTRACT.We present medium resolution (R = 60,000R=60,000) absorption measurements of the interstellar Ca II K line observed towards five nearby A-type stars (49 Ceti, 5 Vul, ιι Cyg, 2 And, and HD ...