Three-Dimensional Structure of the Central Region of NGC7027: A Quest for Trails of High-Velocity Jets

TL;DR

This study uses radio interferometry and morpho-kinematic modeling to investigate the three-dimensional structure of NGC7027's central region, aiming to identify high-velocity jets that shaped its morphology.

Contribution

It introduces a novel application of Shape software to analyze the nebula's structure and searches for evidence of high-velocity jets influencing its formation.

Findings

Ellipsoidal shell model explains the intensity distribution at systemic velocity.

High velocity features deviate from the simple ellipsoidal model.

Possible trail of a jet identified in one direction.

Abstract

We report on the results of a radio interferometric observation of NGC7027 in the CO J=2-1 and 13CO J=2-1 lines. The results are analyzed with morpho-kinematic models developed from the software tool Shape. Our goal is to reveal the morpho-kinematic properties of the central region of the nebula, and to explore the nature of unseen high-velocity jets that may have created the characteristic structure of the central region consisting of molecular and ionized components. A simple ellipsoidal shell model explains the intensity distribution around the systemic velocity, but the high velocity features deviate from the ellipsoidal model. Through the Shape automatic reconstruction model, we found a possible trail of a jet only in one direction, but no other possible holes were created by the passage of a jet.