Other
Scientific paper
Jan 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993egte.conf...25t&link_type=abstract
In NASA. Ames Research Center, The Evolution of Galaxies and Their Environment p 25-26 (SEE N93-26706 10-90)
Other
Astronomical Photometry, Cosmic Dust, Elliptical Galaxies, Monte Carlo Method, Radiative Transfer, Red Shift, Stellar Evolution, Stellar Models, Broadband, Color, Optical Properties, Optical Thickness
Scientific paper
Photometric observations of very distant galaxies--e.g., color vs. z or magnitude vs. z, have been used over the past decade or so in investigations into the evolution of the stellar component. Numerous studies have predicted significant color variations as a result of evolution, in addition to the shifting of different rest wavelengths into the band of observation. Although there is significant scatter, the data can be fit with relatively straightforward, plausible models for galaxian evolution. In very few cases are the effects of dust extinction included in the models. This is due in a large part to the uncertainty about the distribution and optical properties of the grains, and even whether or not they are present in significant numbers in some types of galaxies such as ellipticals. It is likely that the effects of dust on broadband observations are the greatest uncertainty in studies of very distant galaxies. We use a detailed Monte Carlo radiative transfer model within a spherical geometry for different star/dust distributions to examine the effects of dust on the broadband colors of galaxies as a function of redshift. The model fully accounts for absorption and angular redistribution in scattering. In this summary, we consider only the effects on color vs. redshift for three simple geometries each with the same total dust optical depth. Elsewhere at this conference, Capuano, Thronson, & Witt consider other effects of altering the relative dust/star distribution.
Capuano J.
Thronson Harley A. Jr.
Witt Adolf N.
No associations
LandOfFree
Some effects of dust on photometry of high-z galaxies: Confounding the effects of evolution 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 Some effects of dust on photometry of high-z galaxies: Confounding the effects of evolution, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Some effects of dust on photometry of high-z galaxies: Confounding the effects of evolution will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1259302