منابع مشابه
Pictoris debris disc with the VLT / NaCo
Imaging debris discs in the L-band (3.8 μm) is difficult a task. Quasi-static speckles from imperfect optics prevail below 1whereas background emission is the dominant noise source beyond that separation and is much larger than at shorter wavelengths . We demonstrate here the potential of the newly commissioned AGPM coronograph on VLT/NaCo combined with advanced star and sky subtraction techniq...
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We present deep VLT/NACO infrared imaging and spectroscopic observations of the brown dwarf 2MASSWJ 1207334−393254, obtained during our on-going adaptive optics survey of southern young, nearby associations. This ∼ 25 MJup brown dwarf, located ∼ 70 pc from Earth, has been recently identified as a member of the TW Hydrae Association (age ∼ 8 Myr). Using adaptive optics infrared wavefront sensing...
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Gödel’s second incompleteness theorem forbids to prove, in a given theory U , the consistency of many theories—in particular, of the theory U itself—as well as it forbids to prove the normalization property for these theories, since this property implies their consistency. When we cannot prove in a theory U the consistency of a theory T , we can try to prove a relative consistency theorem, that...
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ژورنال
عنوان ژورنال: Library Resources & Technical Services
سال: 2006
ISSN: 0024-2527,2159-9610
DOI: 10.5860/lrts.50n3.166