Computer Science
Scientific paper
May 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007sptz.prop40517m&link_type=abstract
Spitzer Proposal ID #40517
Computer Science
Scientific paper
As part of a comprehensive multi-wavelength project to determine the Spectral Energy Distributions (SEDs) of all known quasars at z > 5, we propose Spitzer photometry in the four IRAC bands and the MIPS 24 µm band. These observations are the necessary short wavelengths complement to our Herschel guaranteed time Key Project, which will measure the Far-IR SED of 77 quasars at z > 5 in the range 70 to 170 µm (PACS) and 240 to 520 µm (SPIRE). In addition, our target list contains 17 radio-loud quasars and galaxies at z > 3.5. The combined Spitzer plus Herschel photometry will characterize the overall Mid- to Far-infrared SEDs of a large sample of quasars at the highest redshifts in great detail and thus provide a data base of huge legacy value. We selected all those targets for this Spitzer proposal for which IRAC and MIPS photometry are neither observed nor scheduled. The proposed observations will cover rest-frame wavelengths between 0.5 and 4 µm which will allow us to detect the hottest dust as an excess of the measured 24 µm flux (above the UV-optical continuum as derived from the IRAC bands and NIR photometry). Our observations will enlarge the present samples of z > 5 quasars with Mid-IR photometry by a factor of 4. This will allow us to determine the frequency of peculiar (dust-free ?) objects detected in previous studies and to carry out statistical investigations of the relation between UV-optical spectrum from the accretion disk and the emission from the hottest part of the dust torus.
Dannerbauer Helmut
Fan Xiaohui
Jiang Linhua
Klaas Ulrich
Krause Oliver
No associations
LandOfFree
Infrared SEDs and dust emission from z > 5 quasars. Part I. Probing the hottest dust with Spitzer. 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 Infrared SEDs and dust emission from z > 5 quasars. Part I. Probing the hottest dust with Spitzer., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Infrared SEDs and dust emission from z > 5 quasars. Part I. Probing the hottest dust with Spitzer. will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1749445