Lee Hartmann

TL;DR: In this article, the authors presented new 10.8 and 18.2 micron images of HR 4796A, a young A0V star that was recently discovered to have a spectacular, nearly edge-on, circumstellar disk prominent at ~20 microns.

TL;DR: In this article, the authors identify nine young stellar objects (YSOs) in the NGC 2264 star-forming region with optical CoRoT light curves exhibiting short-duration, shallow periodic flux dips.

TL;DR: In this article, two different numerical simulations of dynamic, flow-driven molecular cloud formation and evolution were used to predict age spreads for the main stellar population roughly consistent with observations and raise the possibility of forming small numbers of stars early in cloud evolution, before global contraction concentrates the gas and the bulk of the stellar population is produced.

TL;DR: In this article, the Orion A cloud is gravitationally collapsing on large scales, and is producing the Orion Nebula Cluster due to the focusing effects of gravity acting within a finite cloud geometry.

TL;DR: In this paper, the authors derived the distance and structure of the Perseus molecular cloud by combining trigonometric parallaxes from Very Long Baseline Array (VLBA) observations, taken as part of the GOBELINS survey and Gaia Data Release 2.