An enigmatic point-like feature within the HD 169142 transitional disk

Beth A. Biller (Lead / Corresponding author), Jared Males, Timothy J. 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
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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    Biller, B. A., Males, J., Rodigas, T. J., Morzinski, K., Close, L. M., Juhász, A., Follette, K. B., Lacour, S., Benisty, M., Sicilia-Aguilar, A., Hinz, P. M., Weinberger, A., Henning, T., Pott, J-U., Bonnefoy, M., & Köhler, R. (2014). An enigmatic point-like feature within the HD 169142 transitional disk. Astrophysical Journal Letters, 792(1), [L22]. http://iopscience.iop.org/2041-8205/792/1/L22/article