Dust in 3C324

Details Dust in 3C324 Dust in 3C324

1998-09-23

arxiv.org/abs/astro-ph/9809284v1

Astronomy and Astrophysics

Astrophysics

5 pages LaTeX, including 1 figure. Accepted for publication in MNRAS

Scientific paper

10.1046/j.1365-8711.1998.02155.x

The results of a deep submillimetre observation using SCUBA of the powerful radio galaxy 3C324, at redshift z=1.206, are presented. At 850 microns, emission from the location of the host radio galaxy is marginally detected at the 4.2 sigma level, 3.01 +/- 0.72 mJy, but there is no detection of emission at 450 microns to a 3 sigma limit of 21 mJy. A new 32 GHz radio observation using the Effelsberg 100m telescope confirms that the sub-millimetre signal is not associated with synchrotron emission. These observations indicate that both the mass of warm dust within 3C324, and the star formation rate, lie up to an order of magnitude below the values recently determined for radio galaxies at z = 3 to 4. The results are compared with dust masses and star formation rates derived in other ways for 3C324.

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