False Signs of Debris Disks: Stellar-ISM Interactions
First Author:
Andras Gaspar
Email: agaspar AT as.arizona.edu
Steward Observatory, University of Arizona
933 N Cherry Ave
Tucson, AZ, 85721, USA
Coauthors:
Su, Kate Y.L., Steward Observatory, University of Arizona
Rieke, George H., Steward Observatory, University of Arizona
Balog, Zoltan, Steward Observatory, University of Arizona
Mamajek, Eric, University of Rochester, Rochester, NY
Kamp, Inga, Kapteyn Astronomical Institute, Groningen, The Netherlands
Martinez-Galarza, Juan R., Leiden Observatory, Universiteit Leiden, 2300 RA Leiden, The Netherlands
Stapelfeldt, Karl, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109
Abstract
The discovery of the bow shock at delta Velorum, originating from the star's interaction with its surrounding ISM (Gaspar et al. 2008), shows that such interactions can imitate debris disks, even within the Local Bubble.
What are the general conditions for such effects and how common are they? We report the discovery of a new bow shock within 35 parsecs. We also estimate the number statistics of such systems with a nearly complete sample within a distance of 45 parsecs.
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