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

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.

26 pages, 13 figures; accepted for publication in AJ; Full resolution version available at http://web.hku.hk/~junichi/paper/

References in corpus (2)

• The Evolution of NGC 7027 at Radio Frequencies: A New Determination of the Distance and Core Mass
• A spectral line survey of NGC 7027 at millimeter wavelengths

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