| Literature DB >> 32848256 |
Daehyeon Oh1,2, Jun Hashimoto3, Motohide Tamura2,3,4, John Wisniewski5, Eiji Akiyama2, Thayne Currie6, Satoshi Mayama7, Michihiro Takami8, Christian Thalmann9, Tomoyuki Kudo6, Nobuhiko Kusakabe3, Lyu Abe10, Wolfgang Brandner11, Timothy D Brandt12, Joseph C Carson13, Sebastian Egner6, Markus Feldt12, Miwa Goto14, Carol A Grady15,16,17, Olivier Guyon6, Yutaka Hayano1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27, Masahiko Hayashi6,2, Saeko S Hayashi6, Thomas Henning11, Klaus W Hodapp18, Miki Ishii2, Masanori Iye2, Markus Janson19, Ryo Kandori2, Gillian R Knapp19, Masayuki Kuzuhara20, Jungmi Kwon4, Taro Matsuo21, Michael W McElwain15, Shoken Miyama22, Jun-Ichi Morino2, Amaya Moro-Martin23,24, Tetsuo Nishimura6, Tae-Soo Pyo6, Eugene Serabyn25, Takuya Suenaga1,2, Hiroshi Suto2,3, Ryuji Suzuki2, Yasuhiro H Takahashi2,4, Naruhisa Takato6, Hiroshi Terada2, Edwin L Turner19,25, Makoto Watanabe26, Toru Yamada27, Hideki Takami2, Tomonori Usuda2.
Abstract
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 M Jup.Entities:
Keywords: circumstellar matter; protoplanetary disks; stars: individual (LkCa 15); stars: pre-main-sequence
Year: 2016 PMID： 32848256 PMCID： PMC7447141 DOI： 10.1093/pasj/psv133
Source DB: PubMed Journal: Publ Astron Soc Jpn Nihon Tenmon Gakkai ISSN： 0004-6264 Impact factor: 5.071