Science-advisor
REGISTER info/FAQ
Login
username
password
     
forgot password?
register here
 
Research articles
  search articles
  reviews guidelines
  reviews
  articles index
My Pages
my alerts
  my messages
  my reviews
  my favorites
 
 
Stat
Members: 3643
Articles: 2'487'895
Articles rated: 2609

28 March 2024
 
  » arxiv » astro-ph/0103252

 Article overview


A 250 GHz Survey of High Redshift QSOs from the Sloan Digital Sky Survey
C.L.Carilli ; F.Bertoldi ; M.Rupen ; Xiaohui Fan ; Michael A. Strauss ; K.M. Menten ; E. Kreysa ; Donald P. Schneider ; A. Bertarini ; M.S. Yun ; R. Zylka ;
Date 16 Mar 2001
Journal Astrophys.J. 555 (2001) 625
Subject astro-ph
AffiliationNRAO),F.Bertoldi (MPIfR),M.Rupen (NRAO), Xiaohui Fan (IAS),Michael A. Strauss (Princeton),K.M. Menten, E. Kreysa (MPIfR),Donald P. Schneider (Penn State), A. Bertarini (MPIfR), M.S. Yun (U.Mass.), R. Zylka (Cologne
AbstractWe present observations at 250 GHz (1.2 mm), 43 GHz, and 1.4 GHz of a sample of 41 QSOs at z > 3.7 found in the Sloan Digital Sky Survey. We detect 16 sources with a 250 GHz flux density greater than 1.4 mJy. The combination of centimeter and millimeter wavelength observations indicates that the 250 GHz emission is most likely thermal dust emission. Assuming a dust temperature of 50 K, the implied dust masses for the 16 detected sources are in the range 1.5e8 to 5.9e8 Msun, and the dust emitting regions are likely to be larger than 1 kpc in extent. The radio-through-optical spectral energy distributions for these sources are within the broad range defined by lower redshift, lower optical luminosity QSOs. We consider possible dust heating mechanisms, including UV emission from the active nucleus (AGN) and a starburst concurrent with the AGN, with implied star formation rates between 500 and 2000 Msun/year.
Source arXiv, astro-ph/0103252
Services Forum | Review | PDF | Favorites   
 
Visitor rating: did you like this article? no 1   2   3   4   5   yes

No review found.
 Did you like this article?

This article or document is ...
important:
of broad interest:
readable:
new:
correct:
Global appreciation:

  Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.

browser claudebot






ScienXe.org
» my Online CV
» Free


News, job offers and information for researchers and scientists:
home  |  contact  |  terms of use  |  sitemap
Copyright © 2005-2024 - Scimetrica