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March 16, 2026

Dynamical masses of young stellar objects with the VLBA: DYNAMO-VLBA. Trigonometric parallaxes and proper motions of YSOs in Orion

Sergio A. Dzib Jazmín Ordόñez-Toro Laurent Loinard Marina Kounkel Gisela N. Ortiz-León Phillip A. B. Galli Luis F. Rodríguez Amy J. Mioduszewski Josep M. Masqué Eoin O'Kelly Jan Forbrich Karla Moo-Herrera

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Key Points

The aim is to measure the distance and motion of young stellar objects (YSOs) in the Orion complex.
Conducted a multi-epoch VLBA survey of compact radio sources in the Orion region.
Detected 216 compact radio sources, estimating astrometric solutions for 58 sources.
Derived trigonometric parallaxes and proper motions with high precision.
Parallaxes ranged from 2.26 to 2.65 mas, corresponding to distances of 380–440 pc.
Mean distances determined for various regions: 405 pc for NGC 2068, 403 pc for NGC 2024.
Demonstrated negligible mean parallax offsets compared to Gaia measurements.

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Implication

Multi-epoch VLBA survey measures distances and motions of young stars, highlighting radio astrometry's precision.

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Cite This Study

Dzib et al. (2026) studied this question.

synapsesocial.com/papers/69c37bc2b34aaaeb1a67e7bd https://doi.org/10.1051/0004-6361/202558169/pdf

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Keep reading

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

1Dynamical masses of young stellar objects with the VLBA: DYNAMO-VLBA. Radio binary stars in OrionOriginal Research · 2026
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3Kinematic study of the orion complex: Analysing the young stellar clusters from big and small structures2024 · 11 citations
4Parallaxes and Proper Motions of Long Period Variable Stars Determined from VLBI and Gaia DR3Original Research · 2026 · 1 citations
5Very long baseline interferometry detection of nearby (<100 pc) young stars2024