Abstract
A sample of 15 000 faint spiral galaxies is used for the statistical determination of internal absorption by investigating the projected surface brightness. Analyses with different disc models yield small absorption values. For a more realistic three-component model, however, a central face-on optical depth of τ 0 =7 is obtained, which is in agreement with suggestions that spiral galaxies are not optically thin
Sign-in/Register to access full text options 
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.
