LABOCA observations of nearby, active galaxies
A. Weiss, A. Kovacs, R. Guesten, K. M. Menten, F. Schuller, G., Siringo, E. Kreysa

TL;DR
This study presents detailed submillimeter maps of nearby active galaxies, revealing cold dust distribution, synchrotron emission, and gas mass estimates, providing insights into dust temperatures, gas content, and electron aging in radio lobes.
Contribution
First high-resolution submillimeter imaging of cold dust and synchrotron emission in these galaxies, linking dust properties with gas mass and electron aging.
Findings
Cold dust temperatures of 17-20 K in galaxy disks.
Gas masses of 2.1-4.2 billion solar masses.
Synchrotron spectrum shows a break indicating electron aging.
Abstract
We present large scale 870 micron maps of the nearby starburst galaxies NGC253, NGC4945 and the nearest giant elliptical radio galaxy Centaurus A (NGC 5128) obtained with the newly commissioned Large Apex Bolometer Camera (LABOCA) operated at the APEX telescope. Our continuum images reveal for the first time the distribution of cold dust at a angular resolution of 20" across the entire optical disks of NGC253 and NGC4945 out to a radial distance of 10' (7.5 kpc). In NGC5128 our LABOCA image also shows, for the first time at submillimeter wavelengths, the synchrotron emission associated with the radio jet and the inner radio lobes. From an analysis of the 870 micron emission in conjunction with ISO-LWS, IRAS and long wavelengths radio data we find temperatures for the cold dust in the disks of all three galaxies of 17-20 K, comparable to the dust temperatures in the disk of the Milky…
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
