Radio Continuum Sources Associated with AB Aur

Details Radio Continuum Sources Associated with AB Aur Radio Continuum Sources Associated with AB Aur

2006-11-24

arxiv.org/abs/astro-ph/0611754v1

Astronomy and Astrophysics

Astrophysics

6 pages, 1 figure

Scientific paper

We present high angular resolution, high-sensitivity Very Large Array observations at 3.6 cm of the Herbig Ae star AB Aur. This star is of interest since its circumstellar disk exhibits characteristics that have been attributed to the presence of an undetected low mass companion or giant gas planet. Our image confirms the continuum emission known to exist in association with the star, and detects a faint protuberance that extends about $0\rlap.{''}3$ to its SE. Previous theoretical considerations and observational results are consistent with the presence of a companion to AB Aur with the separation and position angle derived from our radio data. We also determine the proper motion of AB Aur by comparing our new observations with data taken about 17 years ago and find values consistent with those found by Hipparcos.

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