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American Astronomical Society, Astrophysical Journal, 2(834), p. 142, 2017

DOI: 10.3847/1538-4357/834/2/142

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The Gould's Belt Distances Survey (GOBELINS) II. Distances and Structure toward the Orion Molecular Clouds

Journal article published in 2017 by Marina Kounkel ORCID, Lee Hartmann ORCID, Laurent Loinard ORCID, Gisela N. Ortiz-Leόn ORCID, Amy J. Mioduszewski, Luis F. Rodríguez ORCID, Sergio A. Dzib ORCID, Rosa M. Torres, Gerardo Pech, Phillip A. B. Galli ORCID, Juana L. Rivera ORCID, Andrew F. Boden, Neal J. Evans ORCID, Cesar Briceño ORCID, John J. Tobin ORCID
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

We present the results of the Gould's Belt Distances Survey of young star-forming regions toward the Orion Molecular Cloud Complex. We detected 36 young stellar objects (YSOs) with the Very Large Baseline Array, 27 of which have been observed in at least three epochs over the course of two years. At least half of these YSOs belong to multiple systems. We obtained parallax and proper motions toward these stars to study the structure and kinematics of the Complex. We measured a distance of 388 ± 5 pc toward the Orion Nebula Cluster, 428 ± 10 pc toward the southern portion L1641, 388 ± 10 pc toward NGC 2068, and roughly ~420 pc toward NGC 2024. Finally, we observed a strong degree of plasma radio scattering toward λ Ori.