Physics
Scientific paper
May 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006sptz.prop30117j&link_type=abstract
Spitzer Proposal ID #30117
Physics
Scientific paper
We propose observations of the the mid-IR continuum and line emission from the warm gas and dust at the centers of cooling flow clusters, in order to investigate the energetics of the cool gas and dust phases in these regions. The observations will allow us to characterise the shape of the UV spectrum that excites the gas and heats the dust, and provide clues to which mechanisms stop the cooling flow processes at about 10^7 K. For the first time in cooling flows, we will detect emission from the dust, measuring its temperature (or range of temperatures) and identify silicate and PAH features crucial for determining the relationship between the dust and the source that is heating it. These are key measurements as dust should play an important role in the energetics of the cool phase. As the cooling process in these clusters is analogous to the cooling that occurs during galaxy formation, the results of this programme will be applicable beyond the continuing controversy on cooling flows. The three clusters to be observed are already known to have IR emission features from ground-based and Spitzer observations made under AO-1. The complete suite of follow-up observations proposed here will allow us to draw far stronger inferences about the physics involved than can be gained from the earlier data alone.
Birkenshaw Mark
Bremer Malcolm
Jaffe Walter
Schaye Joop
No associations
LandOfFree
The missing energy in cooling flow clusters: dust and EUV radiation 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 The missing energy in cooling flow clusters: dust and EUV radiation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The missing energy in cooling flow clusters: dust and EUV radiation will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-933007