Maser emissions act as cosmic rulers for astrometric measurements of astronomical sources from protostellar scales to galactic distances, with SKA-Mid enabling expanded multi-species observations.
Full-Polarization Observations of OH Masers in Massive Star-Forming Regions: I. Data
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abstract
We present full-polarization VLBA maps of the ground-state, main-line, 2 Pi 3/2, J = 3/2 OH masers in 18 Galactic massive star-forming regions. This is the first large polarization survey of interstellar hydroxyl masers at VLBI resolution. A total of 184 Zeeman pairs are identified, and the corresponding magnetic field strengths are indicated. We also present spectra of the NH3 emission or absorption in these star-forming regions. Analysis of these data will be presented in a companion paper.
fields
astro-ph.GA 2years
2026 2verdicts
UNVERDICTED 2representative citing papers
The paper presents predictions and observational plans for Zeeman effect measurements with SKA to provide statistical data on magnetic field strengths across scales in molecular clouds.
citing papers explorer
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Cosmic Rulers: Masers as Tools for Probing Structure in the Galaxy and Beyond, from AU to kpc
Maser emissions act as cosmic rulers for astrometric measurements of astronomical sources from protostellar scales to galactic distances, with SKA-Mid enabling expanded multi-species observations.
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Measuring Magnetic Field Strengths in Galactic Star-forming Regions via the Zeeman Effect with the SKA
The paper presents predictions and observational plans for Zeeman effect measurements with SKA to provide statistical data on magnetic field strengths across scales in molecular clouds.