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Temporal Evolution of the Size and Temperature of Betelgeuse's Extended Atmosphere
Eamon O'Gorman, Graham M. Harper, Alexander Brown +4
We use the Very Large Array (VLA) in the A configuration with the Pie Town (PT) Very Long Baseline Array (VLBA) antenna to spatially resolve the extended atmosphere of Betelgeuse o…
ALMA Observations of Asteroid 3 Juno at 60 Kilometer Resolution
ALMA Partnership, T. R. Hunter, R. Kneissl +67
We present Atacama Large Millimeter/submillimeter Array (ALMA) 1.3 mm continuum images of the asteroid 3 Juno obtained with an angular resolution of 0.042 arcseconds (60 km at 1.97…
First Results from High Angular Resolution ALMA Observations Toward the HL Tau Region
ALMA Partnership, C. L. Brogan, L. M. Perez +82
We present Atacama Large Millimeter/submillimeter Array (ALMA) observations from the 2014 Long Baseline Campaign in dust continuum and spectral line emission from the HL Tau region…
Maser Astrometry with VLBI and the SKA
James A. Green, Huib Jan van Langevelde, Andreas Brunthaler +5
We discuss the unique opportunities for maser astrometry with the inclusion of the Square Kilometre Array (SKA) in Very Long Baseline Interferometry (VLBI) networks. The first phas…
Phase-lag Distances of OH Masing AGB Stars
D. Engels, S. Etoka, E. Gerard +1
Distances to AGB stars with optically thick circumstellar shells cannot be determined using optical parallaxes. However, for stars with OH 1612 MHz maser emission emanating from th…