Orbital motion and multi-wavelength monitoring of LkCa15 b

Michael J. Ireland, Adam L. Kraus

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

10 Citations (Scopus)


As part of a deep multi-year non-redundant aperture mask infrared imaging campaign observing transition disks, we present multi-epoch monitoring of the resolved emission seen within the disk gap of LkCa 15. Orbital motion of both the central source and extended lobes as presented in Kraus and Ireland (2012) is clearly detected at the level of ~4 degrees/year (deprojected), in both K and L'-bands. Based on these data as well as single-epoch H and M bands epochs, we present two models for the central source - thermal emission as a planetary accretion signature and scattering. The thermal emission model is preferred.

Original languageEnglish
Title of host publicationExploring the Formation and Evolution of Planetary Systems
EditorsMark Booth, Brenda C. Matthews, James R. Graham
Place of PublicationCambridge
PublisherCambridge University Press (CUP)
Number of pages5
ISBN (Print)9781107045200
Publication statusPublished - 2013

Publication series

NameProceedings of the International Astronomical Union
ISSN (Print)1743-9213
ISSN (Electronic)1743-9221


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