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Masers as probes of the gas dynamics close to forming high-mass stars

Published online by Cambridge University Press:  16 July 2018

Luca Moscadelli ,
Alberto Sanna  and
Ciriaco Goddi
Luca Moscadelli
Affiliation:
INAF - Osservatorio Astrofisico di Arcetri Largo E. Fermi 5, I-50125, Firenze, Italy email: [email protected]
Alberto Sanna
Affiliation:
Max-Planck-Institut für Radioastronomie Auf dem Hügel 69, D-53121, Bonn, Germany email: [email protected]
Ciriaco Goddi
Affiliation:
Research Institute for Mathematics, Astrophysics and Particle Physics, Radboud University, Heyendaalseweg 135, 6525, AJ Nijmegen, The Netherlands email: [email protected] Leiden Observatory, PO Box 9513, 2300 RA Leiden, The Netherlands
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Abstract

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Imaging the inner few 1000 AU around massive forming stars, at typical distances of several kpc, requires angular resolutions of better than 0″.1. Very Long Baseline Interferometry (VLBI) observations of interstellar molecular masers probe scales as small as a few AU, whereas (new-generation) centimeter and millimeter interferometers allow us to map scales of the order of a few 100 AU. Combining these informations all together, it presently provides the most powerful technique to trace the complex gas motions in the proto-stellar environment. In this work, we review a few compelling examples of this technique and summarize our findings.

Keywords

Stars: formationmasersinstrumentation: interferometers
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 13 , Symposium S336: Astrophysical Masers: Unlocking the Mysteries of the Universe , September 2017 , pp. 201 - 206
Copyright
Copyright © International Astronomical Union 2018 

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