Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aas...20711913g&link_type=abstract
American Astronomical Society Meeting 207, #119.13; Bulletin of the American Astronomical Society, Vol. 37, p.1360
Astronomy and Astrophysics
Astronomy
Scientific paper
We have observed a sample of hot, reddened stars with the Spitzer Space Telescope to measure the wavelength dependence of the diffuse interstellar extinction curve from 3-38 micron as a function of environment. The observations include Infrared Spectrograph (IRS) spectra from 5-38 microns, Infrared Array Camera (IRAC) 3-8 micron, IRS blue peakup, and Multiband Imaging Photometer for Spitzer (MIPS) 24 micron photometry. The extinction curves created from these data represent the first accurate measurement of the extinction between 5 and 38 microns along lines of sight which clearly probe dust in the diffuse interstellar medium. A unique and valuable aspect of the this research is the direct measurement of extinction from the UV to the far-IR in the same lines of sight enabling the extension of the empirical CCM relationship into the Spitzer infrared. In addition, dust parameters derived from these extinction curves will be far better constrained than in previous studies where the ultraviolet through mid-IR extinction curves were taken from different sightlines with different environmental conditions. The accurate measurement of the infrared extinction provides valuable constraints on dust grain materials, both from prominent features (eg.,10 micron silicate feature) and continuum extinction measurements as a function of environment [eg. R(V)].
Clayton Geoffrey
Gordon Karl
Misselt Karl
Pendleton Yvonne
Rieke George
No associations
LandOfFree
Probing the Diffuse Interstellar Extinction Curve in the Spitzer Infrared 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 Probing the Diffuse Interstellar Extinction Curve in the Spitzer Infrared, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Probing the Diffuse Interstellar Extinction Curve in the Spitzer Infrared will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1284855