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A Survey of the Closest, Youngest Stars with the Simultaneous Differential Extrasolar Planet Imager (SDI) at the VLT and MMT

Authors
  • Markus, Hartung
  • Beth, Biller
  • Laird, Close
  • Rainer, Lenzen
  • Wolfgang, Brandner
  • Donald, Mccarthy
  • Elena, Masciadri
  • Thomas, Henning
  • Eric Nielsen
Volume
1286
Pages
8429–8429
Source
SETI Institute
License
Unknown

Abstract

We discuss the preliminary results of a survey of the youngest (< 300 Myr), closest (< 50 pc) stars with the Simultaneous Differential Extrasolar Planet Imager (SDI) implemented at the VLT (Lenzen et al. 2004) and the MMT. SDI uses a quad filter to take images simultaneously at 3 wavelengths surrounding the 1.62 µm methane bandhead found in the spectrum of cool brown dwarfs and gas giants. By performing a difference of images in these filters, speckle noise from the primary can be attenuated by a factor of> 102. In our ...

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