An enigmatic pointlike feature within the HD 169142 transitional disk

Beth A. Biller, Jared Males, Timothy Rodigas, Katie Morzinski, Laird M. Close, Attila Juhász, Katherine B. Follette, Sylvestre Lacour, Myriam Benisty, Aurora Sicilia-Aguilar, Philip M. Hinz, Alycia Weinberger, Thomas Henning, Jörg-Uwe Pott, Mickaël Bonnefoy, Rainer Köhler

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Abstract

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) ∼ 6.4, at a separation of ∼ 0" .11 and PA ∼ 0º. Given its lack of an H or KS 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.

Original languageEnglish
Article numberL22
Number of pages6
JournalAstrophysical Journal Letters
Volume792
Issue number1
Early online date4 Aug 2014
DOIs
Publication statusPublished - 20 Aug 2014

Keywords

  • astro-ph.EP
  • astro-ph.SR
  • Planets and satellites: detection
  • Planets and satellites: formation
  • Planets and satellites: gaseous planets
  • Protoplanetary disks

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