VOLS: a radio census of the young stellar population in Orion

INVITED JUNIOR
13 Jul 2026, 15:25
15m
Tarragona

Tarragona

Tarragona Exhibition and Congress Center

Speaker

Elena Diaz-Marquez

Description

The early stages of star formation involve a balance between accretion and ejection of material during gravitational collapse. Understanding this interplay is crucial for determining the final properties of stars and their planetary systems. Orion A, the closest star-forming complex, hosts a wide range of environments containing protostars and young stellar objects of different masses and evolutionary stages, making it an ideal laboratory for studying the radio emission from young stars throughout their evolution. The VLA Orion A Large Survey (VOLS) is focused on imaging the Orion A complex in the continuum C-band (~6 cm) and Ku-band (~2 cm), as well as in a selected set of spectral lines, and is the first radio survey to cover a wide area of Orion A with subarcsecond resolution. In this talk, I will present the first results at 6 cm based on 26 observation epochs: a systematic characterization of the detected radio sources, their spatial distribution, variability analysis, and emission nature across different evolutionary stages using counterparts at different wavelengths. Together, these results provide a comprehensive radio census of the young stellar population in Orion A.

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