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The Proper Motions of the Double Radio Source n in the Orion BN/KL Region
Luis F. Rodriguez, Sergio A. Dzib, Laurent Loinard +4
We have extended the time baseline for observations of the proper motions of radio sources in the Orion BN/KL region from 14.7 to 22.5 years. We present improved determinations for…
Radio Measurements of the stellar proper motions in the core of the Orion Nebula Cluster
Sergio A. Dzib, Laurent Loinard, Luis F. Rodríguez +8
Using multi-epoch VLA observations, covering a time baseline of 29.1 years, we have measured the proper motions of 88 young stars with compact radio emission in the core of the Ori…
The Galactic Center Molecular Cloud Survey. I. A Steep Linewidth-Size Relation & Suppression of Star Formation
Jens Kauffmann, Thushara Pillai, Qizhou Zhang +4
The Central Molecular Zone (CMZ; inner ) of the Milky Way is a star formation (SF) environment with very extreme physical properties. Exploration of SF in this r…
Revealing a spiral-shaped molecular cloud in our galaxy - Cloud fragmentation under rotation and gravity
Guang-Xing Li, Friedrich Wyrowski, Karl Menten
The dynamical processes that control star formation in molecular clouds are not well understood, and in particular, it is unclear if rotation plays a major role in cloud evolution.…
Spiral Density Waves in a Young Protoplanetary Disk
Laura M. Pérez, John M. Carpenter, Sean M. Andrews +20
Gravitational forces are expected to excite spiral density waves in protoplanetary disks, disks of gas and dust orbiting young stars. However, previous observations that showed spi…
The local spiral structure of the Milky Way
Ye Xu, Mark Reid, Thomas Dame +7
The nature of the spiral structure of the Milky Way has long been debated. Only in the last decade have astronomers been able to accurately measure distances to a substantial numbe…