High Latitude Dust and the 617 MHz - 850 μm relation in NGC 5775

Details High Latitude Dust and the 617 MHz - 850 μm relation in NGC 5775 High Latitude Dust and the 617 MHz - 850 μm relation in NGC 5775

2002-12-11

arxiv.org/abs/astro-ph/0212277v1

Mon.Not.Roy.Astron.Soc. 340 (2003) 269

Astronomy and Astrophysics

Astrophysics

7 pages, 9 figures, accepted for publication in MNRAS

Scientific paper

10.1046/j.1365-8711.2003.06301.x

We present continuum observations of the edge-on spiral galaxy NGC 5775 at 617 MHz with the Giant Metrewave Radio Telescope (GMRT) and at 850 \mu m with the Submillimetre Common-User Bolometer Array (SCUBA) on the James Clerk Maxwell Telescope (JCMT). We report the detection of dust at high-latitudes, extending to about 5 kpc from the disk of the galaxy, and spurs of non-thermal radio emission. The 617 MHz and 850 \mu m distributions are compared with one another and we find a strong correlation between metre wavelength radio emission and sub-mm emission in the disk and at high-latitudes. This suggests that there may be a more fundamental relationship between cold dust and synchrotron radiation other than the link via star formation.

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