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arxiv: 1408.0794 · v1 · pith:UHU5BMX5new · submitted 2014-08-04 · 🌌 astro-ph.EP · astro-ph.SR

An Enigmatic Pointlike Feature within the HD 169142 Transitional Disk

classification 🌌 astro-ph.EP astro-ph.SR
keywords featurediskpointlikebackgroundbrightnesscandidatecannotcharacterization
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We report the detection of a faint pointlike feature possibly related to ongoing planet-formation in the disk of the transition disk star HD 169142. The pointlike feature has a $\Delta$mag(L)$\sim$6.4, at a separation of $\sim$0.11" and PA$\sim$0$^{\circ}$. Given its lack of an H or K$_{S}$ counterpart despite its relative brightness, this candidate cannot be explained by purely photospheric emission and must be a disk feature heated by an as yet unknown source. Its extremely red colors make it highly unlikely to be a background object, but future multi-wavelength followup is necessary for confirmation and characterization of this feature.

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