We present a set of face-on models of the radiative transfer of stellar light in exponential discs, taking into account absorption and multiple scattering...
Radio and infrared structures of type I post-main sequence nebulae
High-resolution VLA radio mapping at 1.46, 4.84, and 15.0 GHz is presented together with NIR J,H,K,L, and M mapping and photometry of a broad range of type I...
Radio and Optical Monitoring of 3C 66A during an extended outburst. II. 1995-1997
We present new monitoring observations of the BL Lac object 3C66A, taken between the years 1995-1997. During this period the object was always observed in an...
Radio continuum and far-infrared observations of low surface brightness galaxies
We present Very Large Array (VLA) radio continuum and Infrared Astronomy Satellite (IRAS) far-infrared (FIR) observations of 16 low luminosity galaxies of...
Radio counterparts of unidentified EGRET gamma-ray sources.
We present one new radio identification and one confirmation of two high-latitude gamma-ray sources detected by CGRO-EGRET, based on flux density measurements...
Radio emission during the formation of stellar clusters in M 33
Aims: We investigate thermal and nonthermal radio emission associated with the early formation and evolution phases of young stellar clusters (YSCs) selected by...
Radio emission in a nearby, ultra-cool dwarf binary: A multifrequency study
Context. The substellar triple system VHS J125601.92−125723.9 (hereafter VHS 1256−1257) is composed of an equal-mass M7.5 brown dwarf binary and an L7 low-mass...
Radio emission in ultracool dwarfs: The nearby substellar triple system VHS 1256-1257
Aim. With the purpose of investigating the radio emission of new ultracool objects, we carried out a targeted search in the recently discovered system VHS...
Radio Imaging of the Very-High-Energy γ-Ray Emission Region in the Central Engine of a Radio Galaxy
The accretion of matter onto a massive black hole is believed to feed the relativistic plasma jets found in many active galactic nuclei (AGN). Although some AGN...