Protostellar Outflows in L1340

TL;DR

This study maps and analyzes protostellar outflows in the L1340 cloud complex using near-infrared shock tracers, revealing multiple outflows and potential correlations with protostar properties.

Contribution

It provides the first detailed mapping of shocks and outflows in L1340, linking shock complexes to candidate protostars and comparing their properties to the general protostar population.

Findings

42 shock complexes identified across three regions

12 outflows linked to 17 shock complexes and candidate sources

Indication that outflow-driving protostars have lower A_V, higher L_bol, and lower T_bol

Abstract

We have searched the L1340 A, B, and C clouds for shocks from protostellar outflows using the H$_2$ 2.122 $\mu$m near-IR line as a shock tracer. Substantial outflow activity has been found in each of the three regions of the cloud (L1340 A, L1340 B, & L1340 C). We find 42 distinct shock complexes (16 in L1340 A, 11 in L1340 B, and 15 in L1340 C). We were able to link 17 of those shock complexes in to 12 distinct outflows and identify candidate source stars for each. We examine the properties (A$_{V}$, T$_{bol}$, and L$_{bol}$) of the source protostars and compare that to the properties of the general population of Class 0/I and flat SED protostars and find that there is an indication, albeit at low statistical significance, that the outflow driving protostars are drawn from a population with lower A$_{V}$, higher L$_{bol}$, and lower T$_{bol}$ than the general population of protostars.