An Enigmatic Pointlike Feature within the HD 169142 Transitional Disk
  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. 
Beth A. Biller, Jared Males, Timothy Rodigas, Katie Morzinski, Laird   M. Close, Attila Juh\'asz, Katherine B. Follette, Syl...
astro-ph.EP astro-ph.SR