Astronomy and Astrophysics – Astrophysics
Scientific paper
2007-08-24
Astronomy and Astrophysics
Astrophysics
5 pages, 4 figures, accepted by ApJL
Scientific paper
10.1086/522779
We have searched for IR emission from the intracluster dust (ICD) in the galaxy cluster A2029. Weak signals of enhanced extended emission in the cluster are detected at both 24 and 70 micron. However, the signals are indistinguishable from the foreground fluctuations. The 24 versus 70 micron color map does not discriminate the dust emission in the cluster from the cirrus emission. After excluding the contamination from the point sources, we obtain upper limits for the extended ICD emission in A2029, 5 x 10^3 Jy/sr at 24 micron and 5 x 10^4 Jy/sr at 70 micron. The upper limits are generally consistent with the expectation from theoretical calculations and support a dust deficiency in the cluster compared to the ISM in our galaxy. Our results suggest that even with the much improved sensitivity of current IR telescopes, a clear detection of the IR emission from ICD may be difficult due to cirrus noise.
Bai Lianfa
Rieke George H.
Rieke Marcia J.
No associations
LandOfFree
Search for IR Emission from Intracluster Dust in A2029 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 Search for IR Emission from Intracluster Dust in A2029, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Search for IR Emission from Intracluster Dust in A2029 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-20814