Astronomy and Astrophysics – Astrophysics
Scientific paper
1998-08-25
Astronomy and Astrophysics
Astrophysics
15 pages, 2 figures, to appear in September 1998 Issue of the Publications of the Astronomical Society of Australia
Scientific paper
If the background universe is observed through a significant amount of diffusely distributed foreground dust, then studies at optical wavelengths may be severely biased. Previous studies investigating effects of foreground dust on background sources assumed the dust to be ``compactly'' distributed, ie. on scales comparable to the visible extent of normal galaxies. We show however that diffuse dust is more effective at obscuring background sources. Galaxy clusters are a likely location for ``large-scale'' diffusely distributed dust, and its effect on the counts of background sources is explored. We also explore the implications of a hypothesised diffuse intergalactic dust component uniformly distributed to high redshift with comoving mass density equal to that associated with local galaxies. In this case, we predict a deficit in background sources about three times greater than that found in previous studies.
No associations
LandOfFree
Obscuration by Diffuse Cosmic Dust does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Obscuration by Diffuse Cosmic Dust, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Obscuration by Diffuse Cosmic Dust will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-229747