首页 | 本学科首页   官方微博 | 高级检索  
     


The surface brightness of IRAS galaxies
Authors:J. I. Davies  S. Phillipps  M. J. Disney
Affiliation:(1) Department of Applied Mathematics and Astronomy, University College, Cardiff, Wales, UK
Abstract:Using IRAS measurements, we find positive correlations between both the infrared to optical flux ratio (LFIR/LB) and infrared colour temperature (L60/L100) with optical surface brightness. These correlations can be understood by high surface brightness galaxies having (i) a high star formation rate, or (ii) a high-space density of stars and dust.In an attempt to interpret (ii) above, we have produced radiative transfer models for the dust absorption in a galactic disc. These models indicate that the highest surface brightness galaxies may be the most dust obscured (i.e., optically thick) and that the total luminosity (and, hence, mass) of these galaxies may be considerably underestimated.
Keywords:
本文献已被 SpringerLink 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号