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

Journal Article · Mon Sep 01 00:00:00 EDT 2014 · Astrophysical Journal Letters

DOI:https://doi.org/10.1088/2041-8205/792/1/L22· OSTI ID:22365148

Biller, Beth A. ^[1]; Males, Jared; Morzinski, Katie; Close, Laird M.; Follette, Katherine B.; Hinz, Philip M. ^[2]; Rodigas, Timothy; Weinberger, Alycia ^[3]; Juhász, Attila ^[4]; Lacour, Sylvestre ^[5]; Benisty, Myriam ^[6]; Sicilia-Aguilar, Aurora ^[7]; Henning, Thomas; Pott, Jörg-Uwe; Köhler, Rainer ^[8]; Bonnefoy, Mickaël ^[9]

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1. Institute for Astronomy, University of Edinburgh, Blackford Hill, Edinburgh EH9 3HJ (United Kingdom)
2. Steward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ, 85719 (United States)
3. Department of Terrestrial Magnetism, Carnegie Institution of Washington, 5241 Broad Branch Road, NW, Washington, DC 20015 (United States)
4. Leiden Observatory, Leiden University, P.O. Box 9513, 2300 RA Leiden (Netherlands)
5. LESIA, CNRS/UMR-8109, Observatoire de Paris, UPMC, Université Paris Diderot, 5 Place Jules Janssen, F-92195 Meudon (France)
6. UJF-Grenoble 1/CNRS-INSU, Institut de Planétologie et d'Astrophysique de Grenoble (IPAG) UMR 5274, F-38041 Grenoble (France)
7. Departamento de Física Teórica, Facultad de Ciencias, Universidad Autónoma de Madrid, E-28049 Cantoblanco, Madrid (Spain)
8. Max-Planck-Institut für Astronomie, Königstuhl 17, D-69117 Heidelberg (Germany)
9. Université Grenoble Alpes, IPAG, F-38000 Grenoble (France)

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 Δmag(L) ∼ 6.4, at a separation of ∼0.''11 and position angle ∼0°. Given its lack of an H or K{sub 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.

• OSTI ID: 22365148
• Journal Information: Astrophysical Journal Letters, Vol. 792, Issue 1; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 2041-8205
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
BRIGHTNESS
COLOR
DETECTION
PHOTOSPHERE
PLANETS
PROTOPLANETS
SATELLITES
STARS
WAVELENGTHS