Filamentary Structure of Orion A

TL;DR

This study analyzes the filamentary structures in the Orion A molecular cloud using high-resolution observations from CARMA and Nobeyama, identifying filaments and comparing their emission properties across different molecular lines.

Contribution

It provides high-resolution imaging and initial analysis of filament properties in Orion A, including a pilot comparison of [CII], [CI], and $^{13}$CO emissions.

Findings

Identified filamentary structures in Orion A.

Compared emission properties of different molecular lines.

Provided preliminary kinematic analysis of filaments.

Abstract

We present filamentary structure analysis based on the CARMA Orion Project through which we obtained high resolution (0.01pc) and high dynamic range (2~deg in DEC) images of the Orion A molecular cloud. We show a preliminary emission map of the $^{13}$CO emission with the addition of identified filaments. The data product resulted from 1500~hr of observing time at CARMA interferometer, and the Nobeyama 45~m telescope. We address basic filament properties along with calculated typical kinematical properties. Furthermore, we present a pilot study where we compare the observed [C{\sc II}] and [C{\sc I}] emission to $^{13}$CO emission towards 6 selected filaments in Orion~A.