ASTE Submillimeter Observations of a Young Stellar Object Condensation in Cederblad 110

TL;DR

This study uses submillimeter observations to analyze the dense gas and outflows in a young stellar object region, revealing complex interactions and the properties of associated protostars in Cederblad 110.

Contribution

First detailed submillimeter mapping of the Cederblad 110 YSO condensation, identifying multiple envelopes, outflows, and their interactions.

Findings

Dense molecular gas extends ~0.1 pc around YSOs

Bipolar outflows detected from IRS4 and IRS6

Outflows influence gas motion but do not trigger star formation

Abstract

We present results of submillimeter observations of a low-mass young stellar objects (YSOs) condensation in the Cederblad 110 region of the Chamaeleon I dark cloud with Atacama Submillimeter Telescope Experiment. Our HCO+(J=4-3) map reveals a dense molecular gas with an extent of ~ 0.1 pc, which is a complex of two envelopes associated with class I sources Ced110 IRS4 and IRS11 and a very young object Cha-MMS1. The other two class I sources in this region, IRS6 and NIR89, are located outside the clump and have no extended HCO+ emission. HCO+ abundance is calculated to be 2.6 x 10^{-10} for MMS1 and 3.4 x 10^{-9} for IRS4, which are comparable to the reported value for other young sources. Bipolar outflows from IRS4 and IRS6 are detected in our 12CO(J=3-2) map. The outflow from IRS4 seems to collide with Cha-MMS1. The outflow has enough momentum to affect gas motion in MMS1, although no sign has been detected to indicate that a triggered star formation has occurred.