The Gould's Belt Distances Survey (GOBELINS) II. Distances and Structure toward the Orion Molecular Clouds
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.
Additional Information
© 2017 The American Astronomical Society. Received 2016 July 11; revised 2016 August 26; accepted 2016 September 13; published 2017 January 11. We acknowledge helpful discussions with Mark Reid, which led to testing the possible effects of phase delay in the ONC. G.N.O.-L., L.L., L.F.R., R.A.G.-L.L., G.P., and J.L.R. acknowledge DGAPA, UNAM, and CONACyT, Mexico for financial support. L.L. and G.O. also acknowledge support from von Humboldt Stiftung. N.J.E. was supported by NSF grant AST-1109116 to the University of Texas at Austin. P.A.B.G. acknowledges financial support from FAPESP. The National Radio Astronomy Observatory is operated by Associated Universities, Inc., under cooperative agreement with the NSF. Software: AIPS (Greisen 2003), MPFIT (Markwardt 2009), Skyfield, Binary Star Combined Solution Package (Gudehus 2001).Attached Files
Published - Kounkel_2017_ApJ_834_142.pdf
Submitted - 1609.04041v2.pdf
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Additional details
- Eprint ID
- 73360
- Resolver ID
- CaltechAUTHORS:20170110-080418591
- Dirección General Asuntos del Personal Académico (DGAPA)
- Universidad Nacional Autónoma de México (UNAM)
- Consejo Nacional de Ciencia y Tecnología (CONACYT)
- Alexander von Humboldt Foundation
- AST-1109116
- NSF
- Fundação de Amparo à Pesquisa do Estado de Sao Paulo (FAPESP)
- Created
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2017-01-10Created from EPrint's datestamp field
- Updated
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2021-11-11Created from EPrint's last_modified field