The Gould's Belt distance survey

Details The Gould's Belt distance survey The Gould's Belt distance survey

2011-03-03

arxiv.org/abs/1103.0803v1

Astronomy and Astrophysics

Astrophysics

Galaxy Astrophysics

To be published in the Revista Mexicana de Astronomia y Astrofisica (Serie de Conferencias)

Scientific paper

Very Long Baseline Interferometry (VLBI) observations can provide the position of compact radio sources with an accuracy of order 50 micro-arcseconds. This is sufficient to measure the trigonometric parallax and proper motions of any object within 500 pc of the Sun to better than a few percent. Because they are magnetically active, young stars are often associated with compact radio emission detectable using VLBI techniques. Here we will show how VLBI observations have already constrained the distance to the most often studied nearby regions of star-formation (Taurus, Ophiuchus, Orion, etc.) and have started to provide information on their internal structure and kinematics. We will then briefly describe a large project (called The Gould's Belt Distance Survey) designed to provide a detailed view of star-formation in the Solar neighborhood using VLBI observations.

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