Attila Moór, Péter Ábrahám, Csaba Kiss, Dániel Apai, Carol Grady, Thomas Henning, Ilaria Pascucci, Alíz Derekas, and László L. Kiss
INVESTIGATION OF THE VEGA PHENOMENON AMONG F-TYPE STARS (Poster)

INVESTIGATION OF THE VEGA PHENOMENON AMONG F-TYPE STARS

Attila Moór(1), Péter Ábrahám(1), Csaba Kiss(1), Dániel Apai(2,3), Carol Grady(4,5), Thomas Henning(6), Ilaria Pascucci(2), Alíz Derekas(7,8), and László L. Kiss(7)
(1)Konkoly Observatory of the Hungarian Academy of Sciences, PO Box 67, H-1525 Budapest, Hungary
(2)Steward Observatory, The University of Arizona, 933 N. Cherry Avenue, Tucson, AZ 85721, USA
(3)NASA Astrobiology Institute
(4)Eureka Scientific, 2452 Delmer Street Suite 100, Oakland, CA 94602-3017
(5)Exo-Planets and Stellar Astrophysics Laboratory, Exploration of the Universe Division, NASA Goddard Space Flight Center, Code 667, Greenbelt, MD 20771
(6)Max-Planck-Institut für Astronomie, Königstuhl 17, 69117 Heidelberg, Germany
(7)School of Physics A28, University of Sydney, NSW 2006, Australia
(8)School of Physics, Department of Astrophysics and Optics, University of New South Wales, NSW 2052, Australia

We observed a sample of 78 Vega candidate stars with the IRS and MIPS instruments on-board the Spitzer Space Telescope. All stars were in the spectral range of F0-F9, resulting in a rather homogeneous sample in terms of stellar mass and luminosity. Our investigation focused on the following issues:

1. the temporal evolution of debris disks;
2. individual systems with very high fractional luminosity;
3. old stars with warm debris disks;
4. debris disks in young moving groups.

In this contribution we present our first results especially related to the existence of debris disks in young nearby stellar kinematic groups.