Differential Simultaneous Imaging and Faint Companions: TRIDENT First Results from CFHT

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dc.creatorMarois, C.
dc.creatorNadeau, D.
dc.creatorDoyon, R.
dc.creatorRacine, R.
dc.creatorWalker, G. A. H.
dc.date2002-11-28
dc.date.accessioned2026-07-07T02:06:36Z
dc.date.available2026-07-07T02:06:36Z
dc.descriptionWe present the first results obtained at CFHT with the TRIDENT infrared camera, dedicated to the detection of faint companions close to bright nearby stars. Its main feature is the acquisition of three simultaneous images in three wavelengths (simultaneous differential imaging) across the methane absorption bandhead at 1.6 micron, that enables a precise subtraction of the primary star PSF while keeping the companion signal. Thirty-five stars have been observed in two observing missions, with no detection so far. It is shown that a faint companion with a DeltaH of 10 magnitudes would be detected at 0.5 arcsec from the primary.
dc.description4 pages, 1 figure, to appear in IAU Symposium, Vol. 211, E. L. Martin, ed
dc.identifierhttps://arxiv.org/abs/astro-ph/0211635
dc.identifierhttp://arxiv.org/abs/astro-ph/0211635
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/5419
dc.subjectAstrophysics
dc.titleDifferential Simultaneous Imaging and Faint Companions: TRIDENT First Results from CFHT
dc.typetext

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