Extragalactic molecular clouds and chemistry of diffuse interstellar clouds [Elektronische Ressource] / vorgelegt von Yuri Beletsky

Extragalactic molecular clouds andchemistry of diffuse interstellar cloudsYuri BeletskyMun¨ chen, 2009Extragalactic molecular clouds andchemistry of diffuse interstellar cloudsYuri BeletskyDissertationan der Fakult¨at fur¨ Physikder Ludwig–Maximilians–Universit¨atMunc¨ henvorgelegt vonYuri Beletskyaus Minsk, BelarusMunc¨ hen, den 2009Erstgutachter: Prof. Dr. Ralf BenderZweitgutachter: Prof. Dr. Andreas BurkertTag der mundlic¨ hen Prufung:¨ 2009vTo my friends.viAbstract / ZusammenfassungSince the discovery of a cold molecular component of the interstellar medium in the1970s, it has been realized that most of the dark clouds are actually molecular clouds,consisting mainly of molecular hydrogen and some amount of dust and other molecules.Nowadays, molecular clouds are recognized as places of star-formation in the MilkyWay and other galaxies. Therefore, studies of the structure, physical conditions, andchemical compositions of these objects are of paramount importance, since they allowus to understand the process of star formation.This thesis presents the study of giant molecular clouds in the giant elliptical radiogalaxy NGC5128 (Centaurus A) and an analysis of the chemical composition of diffuseinterstellar clouds. Using dust as tracer of molecular hydrogen, and detecting the cloudsby a multi-scale wavelet based method we derive basic parameters of the molecularclouds in NGC5128.