Radio Emission from Low Mass Young Stellar Objects

TL;DR

This paper reviews how radio emissions from low-mass young stellar objects (YSOs) help detect early protostars, discusses the emission mechanisms, and explores their relation to YSO properties and broader astrophysical implications.

Contribution

It provides an overview of the physics behind radio emissions in low-mass YSOs and discusses recent findings on their relationship with YSO properties and evolutionary stages.

Findings

Radio emission is a reliable detection method for embedded low-mass YSOs.

The relationship between radio luminosity and YSO properties is being clarified with larger samples.

Understanding radio emission contributes to insights into protostellar evolution and their environmental impact.

Abstract

Compact radio emission provides a reliable method for the detection of low luminosity young stellar objects (YSOs), and is particularly useful for detecting the earliest stages of protostellar evolution where the source itself may still be heavily embedded in its natal dust envelope. For such Class 0 and Class I objects the dominant radio emission mechanism is expected to be free-free, however unlike massive YSOs the way in which this radio emission is produced remains a subject of debate. As larger samples of radio YSOs become available the relationship between the radio luminosity of the Class 0/I population and their wider global properties is now being clarified. Furthermore, the broader scientific applications of such samples are also becoming increasingly apparent. These improved constraints on the nature of the radio emission from YSOs are now contributing to our understanding of not only the evolutionary physics of protostars themselves but also their wider impact on their surroundings. Here we discuss the physics of the radio emission, the emerging relationship between this emission and other properties of YSOs and some of the applications for studies exploiting this emission.