Near-infrared detection of H$_2$ flows in the core of Mon R1 association

TL;DR

This paper reports the discovery of four new H₂ jets in the Mon R1 star-forming region, confirming active outflows and identifying potential young stellar objects through infrared observations.

Contribution

The study presents new near-infrared H₂ jet detections in Mon R1, linking them to early-stage PMS objects and expanding knowledge of star formation activity in this region.

Findings

Four new H₂ jets discovered in Mon R1

Infrared reflection nebulae identified near jets

Potential exciting sources are extremely red, young PMS objects

Abstract

We report the discovery of 4 new H$_2$ jets in Mon R1 star-forming region on the images obtained with the 2.5-m telescope of the Caucasian Mountain Observatory of SAI MSU through the filter, centered on the H$_2$ 1-0 S(1) emission line. This discovery confirms the nature of these flows, which existence was previously suspected using archival Spitzer GLIMPSE360 and WISE survey images. Also two infrared reflection nebulae were revealed. On the Herschel PACS survey images we found a small group of far-infrared sources, mostly unknown ones. Among them are the possible exciting objects of these outflows. Spectral energy distributions of new sources show their extremely red colour and the bolometric luminosities reaching 3 L$_{sun}$ and even 10 L$_{sun}$. They should be PMS objects at the very early evolutionary stages.