X-ray properties of NGC 300 point sources detected with XMM-Newton and their optical counterparts [Elektronische Ressource] / vorgelegt von Stefania Carpano

X-ray properties of NGC 300point sources detected withXMM-Newton and their opticalcounterpartsDissertationzur Erlangung des Grades einesDoktors der Naturwissenschaftender Fakultät für Mathematik und Physikder Eberhard Karls Universität Tübingenvorgelegt vonS Caus Etterbeek (Brüssel)2006Tag der mündlichen Prüfung: 8 März 2006Dekan: Prof. Dr. Schmid1. Berichterstatter: Priv.-Doz. Dr. J. Wilms2. Berichterstatter: Prof. Dr. Klaus WernerAbstractStudies of the X-ray population of spiral galaxies other than our Galaxy are ofimportance especially for the understanding of X-ray binaries and other X-ray emit-ting sources. The X-ray population of spiral galaxies is mainly composed of super-nova remnants (SNRs), low-mass X-ray binaries (LMXBs), high-mass X-ray binaries(HMXBs), and other sources for which the nature is still not clear. The latter aremainly supersoft sources (SSSs), characterized by very soft spectra and luminosities36 39 −1in the range of 10 –10 erg s , and ultraluminous X-ray sources (ULXs), charac-39 −1terized by a luminosity>10 erg s .In this thesis, I study the X-ray population of the nearby spiral galaxy NGC 300,using∼66 ksec XMM-Newton data obtained during the observations of 2000 Decem-ber/ 2001 January. A total of 86 sources inside the D were detected above a maxi-25mum likelihood threshold of 10, in the 0.3–6 keV band. I derived for these sources,global properties as X-ray colors and fluxes.