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Tomography of Galactic star-forming regions and spiral arms with the Square Kilometer Array
Laurent Loinard, Mark Thompson, Melvin Hoare +12
Very Long Baseline Interferometry (VLBI) at radio wavelengths can provide astrometry accurate to 10 micro-arcseconds or better (i.e. better than the target GAIA accuracy) without b…
Very Long Baseline Interferometry with the SKA
Zsolt Paragi, Leith Godfrey, Cormac Reynolds +79
Adding VLBI capability to the SKA arrays will greatly broaden the science of the SKA, and is feasible within the current specifications. SKA-VLBI can be initially implemented by pr…
From the ashes: JVLA observations of water fountain nebula candidates show the rebirth of IRAS 18455+0448
W. H. T. Vlemmings, N. Amiri, H. J. van Langevelde +1
[abridged] The class of water fountain nebulae is thought to represent the stage of the earliest onset of collimated bipolar outflows during the post-Asymptotic Giant Branch phase.…
Rapidly increasing collimation and magnetic field changes of a H2O maser outflow
G. Surcis, W. H. T. Vlemmings, H. J. van Langevelde +6
W75N(B) is a massive star-forming region that contains three radio continuum sources (VLA 1, VLA 2, and VLA 3), which are thought to be three massive young stellar objects at three…
EVN observations of 6.7 GHz methanol masers in clusters of massive young stellar objects
Anna Bartkiewicz, Marian Szymczak, Huib van Langevelde
Methanol masers at 6.7 GHz are associated with high-mass star-forming regions (HMSFRs) and often have mid-infrared (MIR) counterparts characterized by extended emission at 4.5 m…
The magnetic field at milliarcsecond resolution around IRAS20126+4104
G. Surcis, W. H. T. Vlemmings, H. J. van Langevelde +2
IRAS20126+4104 is a well studied B0.5 protostar that is surrounded by a ~1000 au Keplerian disk and is where a large-scale outflow originates. Both 6.7-GHz CH3OH masers and 22-GHz…