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Matthew Ashby is an Astrophysicist
at the Harvard- Smithsonian
Center for Astrophysics. He became a member of the
SWAS mission team
in 1995, and has also been a member of the
IRAC instrument team since 1999. His research interests involve
working to better understand the sources of infrared emission
from galaxies, and modelling the radiative transfer
processes taking place in Galactic star formation complexes.
This work is based on data now being taken by the Spitzer Space
Telescope and other observatories, both ground- and space-based.
Dr. Ashby is involved in a number of Spitzer/IRAC Guaranteed Time
and Guest Observer science projects. He is leading an effort to
characterize the structure of a sample of bright, famous
late-type edge-on spiral galaxies in the mid-infrared. This program,
which includes observations of NGC 5907 (shown here as seen by the Sloan
Digital Sky Survey), is designed to be especially sensitive to the faint,
diffuse infrared emission that might be the signature of a thick disk
or a baryonic halo composed of cool, red objects. Some results were
presented
recently at the 2005 January meeting of the American Astronomical Society
in San Diego.
Click
here
for the IRAC Journal Club Schedule.
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