Dust emission from the most distant quasars

Details Dust emission from the most distant quasars Dust emission from the most distant quasars

2003-05-07

arxiv.org/abs/astro-ph/0305116v1

Astron.Astrophys.406:L55-L58,2003

Astronomy and Astrophysics

Astrophysics

4 pages, 1 figure, to appear in A&A Letters

Scientific paper

10.1051/0004-6361:20030710

We report observations of three SDSS z>6 QSOs at 250 GHz (1.2mm) using the 117-channel Max-Planck Millimeter Bolometer (MAMBO-2) array at the IRAM 30-meter telescope. J1148+5251 (z=6.41) and J1048+4637 (z=6.23) were detected with 250 GHz flux densities of 5.0 +- 0.6 mJy and 3.0 +- 0.4 mJy, respectively. J1630+4012 (z=6.05) was not detected with a 3 sigma upper limit of 1.8 mJy. Upper flux density limits from VLA observations at 43 GHz for J1148+5251 and J1048+4637 imply steeply rising spectra, indicative of thermal infrared emission from warm dust. The far-infrared luminosities are estimated to be \~10^13 L_sun, and the dust masses ~10^8 M_sun, assuming Galactic dust properties. The presence of large amounts of dust in the highest redshift QSOs indicates that dust formation must be rapid during the early evolution of QSO host galaxies. Dust absorption may hinder the escape of ionizing photons which reionize the intergalactic medium at this early epoch.

Affiliated with

Also associated with

No associations

Rating

Dust emission from the most distant quasars 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 Dust emission from the most distant quasars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dust emission from the most distant quasars will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-22803