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Micro-arcsecond structure of Sagittarius A* revealed by high-sensitivity 86 GHz VLBI observations
Christiaan D. Brinkerink, Cornelia Müller, Heino D. Falcke +21
The compact radio source Sagittarius~A (Sgr~A)in the Galactic Center is the primary supermassive black hole candidate. General relativistic magnetohydrodynamical (GRMHD) si…
Chasing discs around O-type (proto)stars - ALMA evidence for an SiO disc and disc wind from G17.64+0.16
L. T. Maud, R. Cesaroni, M. S. N. Kumar +28
We present high angular resolution 0.2 arcsec continuum and molecular emission line Atacama Large Millimeter/sub-millimeter Array (ALMA) observations of G17.64+0.16 in Band 6 (220G…
Discovery of 14NH3 (2,2) maser emission in Sgr B2-Main
E. A. C. Mills, A. Ginsburg, A. R. Clements +7
We report the discovery of the first 14NH3 (2,2) maser, seen in the Sgr B2 Main star forming region near the center of the Milky Way, using data from the Very Large Array radio tel…
Protostellar Outflows at the EarliesT Stages (POETS). I. Radio thermal jets at high resolution nearby HO maser sources
A. Sanna, L. Moscadelli, C. Goddi +2
Abridged. Methods. We made use of the Karl G. Jansky Very Large Array (VLA) in the B configuration at K band, and in the A configuration at both Ku and C bands, in order to image t…
Discovery of a sub-Keplerian disk with jet around a 20Msun young star. ALMA observations of G023.01-00.41
A. Sanna, A. Koelligan, L. Moscadelli +9
It is well established that Solar-mass stars gain mass via disk accretion, until the mass reservoir of the disk is exhausted and dispersed, or condenses into planetesimals. Accreti…
Multi-directional mass-accretion and collimated outflows in W51
Ciriaco Goddi, Adam Ginsburg, Luke Maud +2
We observed the W51 high-mass star-forming complex with ALMA's longest-baseline configurations, achieving an angular resolution of 20 milliarcseconds, corresponding to a line…