AN ENIGMATIC POINT-LIKE FEATURE WITHIN THE HD 169142 TRANSITIONAL DISK

Biller, Beth A.; Males, Jared; Rodigas, Timothy; Morzinski, Katie; Close, Laird M.; Juhasz, Attila; Follette, Katherine B.; Lacour, Sylvestre; Benisty, Myriam; Sicilia-Aguilar, Aurora; Hinz, Philip M.; Weinberger, Alycia; Henning, Thomas; Pott, Joerg-Uwe; Bonnefoy, Mickael; Koehler, Rainer
2014
ASTROPHYSICAL JOURNAL LETTERS
DOI
10.1088/2041-8205/792/1/L22
We report the detection of a faint point-like feature possibly related to ongoing planet-formation in the disk of the transition disk star HD 169142. The point-like feature has a Delta mag(L) similar to 6.4, at a separation of similar to 0 ''.11 and position angle similar to 0 degrees. 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 follow up is necessary for confirmation and characterization of this feature.