Abstract
view Abstract Citations (23) References (39) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Galactic absorption line coronae Bregman, J. N. Abstract Models are developed to determine if gaseous coronas around galaxies give rise to the absorption systems in quasar spectra. A two-dimensional hydrodynamic code with radiative cooling is used to study the dynamics and thermodynamics of a corona, and the position and rate at which clouds form. Coronal gas is found to rise from an extended gaseous disk in two models with base coronal temperatures of 10 to the 6th K and 0.50 x 10 to the 6th K. Column densities of 10 to the 19th sq cm out to a radius of 7 kcp are also achieved with a total gas mass of 2.0 x 10 to the 9th and 1.7 x 10 to the 9th solar masses, respectively. The velocity structure of the model absorption line systems may be reproduced, and clouds in pressure equilibrium with the hot coronas have densities consistent with basic observational and theoretical restrictions. Publication: The Astrophysical Journal Pub Date: November 1981 DOI: 10.1086/159343 Bibcode: 1981ApJ...250....7B Keywords: Absorption Spectra; Astronomical Models; Coronas; Galactic Structure; Quasars; Disk Galaxies; Gas Density; High Temperature Gases; Line Spectra; Radiant Cooling; Astrophysics full text sources ADS |
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
