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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents



ID: 731869.0, MPI für Astronomie / Publikationen_mpia
Near-infrared imaging polarimetry of LkCa 15: A possible warped inner disk
Authors:Oh, D.; Hashimoto, J.; Tamura, M.; Wisniewski, J.; Akiyama, E.; Currie, T.; Mayama, S.; Takami, M.; Thalmann, C.; Kudo, T.; Kusakabe, N.; Abe, L.; Brandner, W.; Brandt, T. D.; Carson, J. C.; Egner, S.; Feldt, M.; Goto, M.; Grady, C. A.; Guyon, O.; Hayano, Y.; Hayashi, M.; Hayashi, S. S.; Henning, T.; Hodapp, K. W.; Ishii, M.; Iye, M.; Janson, M.; Kandori, R.; Knapp, G. R.; Kuzuhara, M.; Kwon, J.; Matsuo, T.; Mcelwain, M. W.; Miyama, S.; Morino, J.-I.; Moro-Martin, A.; Nishimura, T.; Pyo, T.-S.; Serabyn, E.; Suenaga, T.; Suto, H.; Suzuki, R.; Takahashi, Y. H.; Takato, N.; Terada, H.; Turner, E. L.; Watanabe, M.; Yamada, T.; Takami, H.; Usuda, T.
Date of Publication (YYYY-MM-DD):2016
Title of Journal:Publications of the Astronomical Society of Japan
Volume:68
Start Page:id. L3 (6 pp)
Audience:Not Specified
Abstract / Description:We present high-contrast H-band polarized intensity images of the transitional disk around the young solar-like star LkCa 15. By utilizing Subaru/HiCIAO for polarimetric differential imaging, the angular resolution and the inner working angle reach 0{^''.}07 and r = 0{^''.}1, respectively. We obtained a clearly resolved gap (width ≲ 27 au) at ˜48 au from the central star. This gap is consistent with images reported in previous studies. We also confirmed the existence of a bright inner disk with a misaligned position angle of 13° ± 4° with respect to that of the outer disk, i.e., the inner disk is possibly warped. The large gap and the warped inner disk both point to the existence of a multiple planetary system with a mass of ≲ 1 MJup.
Free Keywords:circumstellar matter; protoplanetary disks; stars: individual (LkCa 15); stars: pre-main-sequence
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:ISSN:0004-6264 %R 10.1093/pasj/psv133
URL:http://cdsads.u-strasbg.fr/abs/2016PASJ...68L...3O
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