Current stage of the ATCA follow-up for SPLASH

TL;DR

This paper reports on high-precision follow-up observations of OH masers detected in the SPLASH survey, categorizing their origins and discussing future research directions based on ATCA data.

Contribution

It provides the current status of ATCA follow-up observations for SPLASH and offers insights into the classification and potential future studies of OH masers.

Findings

Identification of OH masers from different astrophysical sources.

High-accuracy position measurements (~1 arcsec).

Discussion of future research prospects.

Abstract

Four ground-state OH transitions were detected in emission, absorption and maser emission in the Southern Parkes Large-Area Survey in Hydroxyl (SPLASH). We re-observed these OH masers with the Australia Telescope Compact Array to obtain positions with high accuracy (~1 arcsec). According to the positions, we categorised these OH masers into different classes, i.e. star formation, evolved stars, supernova remnants and unknown origin. We found one interesting OH maser source (G336.644-0.695) in the pilot region, which has been studied in detail in Qiao et al. (2016a). In this paper, we present the current stage of the ATCA follow-up for SPLASH and discuss the potential future researches derived from the ATCA data.