PoS - Proceedings of Science
Volume 344 - 14th European VLBI Network Symposium & Users Meeting (EVN2018) - Stellar Evolution Session 1
High-mass star formation expored with maser VLBI & thermal (ALMA, JVLA) observations
L. Moscadelli
Full text: pdf
Pre-published on: February 18, 2019
Published on: October 09, 2019
Intense methanol and water maser transitions are commonly observed towards high-mass young stellar objects (YSO). Multi-epoch very long baseline interferometry (VLBI) observations allow us to determine maser positions and three-dimensional velocities with an accuracy of about 1 mas and 1 km/s, respectively. Presently, JVLA cm and ALMA mm observations can determine the spatial distribution and (line of sight) kinematics of the thermal (continuum and line) emission around the forming star with unprecedented sensitivity (~10 microJy and ~1 mJy for continuum and line, respectively) and angular resolution (0.05" - 0.2"). Combining maser VLBI and thermal interferometric datasets is the most accurate way to determine the physical conditions and unveil the dynamical structures (disks, jets, expanding/infalling shells) associated with massive star formation. This talk presents the results of this technique for two massive star-forming regions: G16.59-0.05 and G24.78+0.08, whose maser emission has been extensively monitored with VLBI and for which we have recently obtained new JVLA and ALMA data.
DOI: https://doi.org/10.22323/1.344.0005
How to cite

Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in "proceeding" format which is more detailed and complete.

Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.