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astro-ph2008★ 6 cited
Probing the centre of the large circumstellar disc in M17
M. Nielbock, R. Chini, V. H. Hoffmeister +3
We investigated the nature of the hitherto unresolved elliptical infrared emission in the centre of the ~20000 AU disc silhouette in M 17. We combined high-resolution JHKsL'M' band…
astro-ph2006
Unification of 3CR Radio Galaxies and Quasars
Bernhard Schulz, Ralf Siebenmorgen, Martin Haas +2
We have observed seven powerful FR2 radiogalaxies and seven quasars with the Spitzer IRS. Both samples are comparable in both, redshift range and isotropic 178 Hz luminosity. Both…