Dust emission from BAL and non-BAL QSOs: probing the hot component with Spitzer

Details Dust emission from BAL and non-BAL QSOs: probing the hot component with Spitzer Dust emission from BAL and non-BAL QSOs: probing the hot component with Spitzer

Mar 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009sptz.prop50469h&link_type=abstract

Spitzer Proposal ID #50469

Physics

Scientific paper

About 20% of quasars show Broad Absorption Lines (BAL) in their spectra indicating high-velocity outflows with mass loss rates comparable to the quasar accretion rates. The BAL phenomenon can either affect all quasars, being only observed along peculiar lines of sight, or indicate a peculiar stage in the quasar evolution. Understanding BAL outflows is then necessary to improve our understanding of quasars in general, as well as for understanding the feedback effect of outflows on AGN hosts and on the intergalactic medium. Moreover, quasar outflows rather than winds from evolved stars could be an important source of dust. An accurate determination and comparison of the dust physical properties (temperature, luminosity, mass) for the various sub-types of BAL QSOs and for non-BAL QSOs may answer these questions. Determining the complete dust energy distribution (including the peak of emission) of z ~ 2 quasars is now possible using combined measurements from the Herschel and Spitzer observatories. We therefore propose to observe a sample of ~ 50 BAL and non-BAL QSOs carefully selected from the SDSS. MIPS and IRAC Spitzer photometric observations in the mid-infrared (4 - 24 micron) are proposed here to sample the hot dust emission. These data will complement far-infrared (75 - 490 micron) observations (characterizing the cold dust component) already foreseen with the Herschel PACS and SPIRE instruments as part of an accepted Herschel Guaranteed Time Key Programme.

Affiliated with

Also associated with

No associations

Rating

Dust emission from BAL and non-BAL QSOs: probing the hot component 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 Dust emission from BAL and non-BAL QSOs: probing the hot component with Spitzer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dust emission from BAL and non-BAL QSOs: probing the hot component with Spitzer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1732659