Bibliographic Details
| Title: |
Near-Infrared Imaging Polarimetry of LkCa 15: A Possible Warped Inner Disk |
| Authors: |
Oh, Daehyeon, Hashimoto, Jun, Tamura, Motohide, Winsiewski, John, Akiyama, Eiji, Currie, Thayne, Mayama, Satoshi, Takami, Michihiro, Thalmann, Christian, Kudo, Tomoyuki, Kusakabe, Nobuhiko, Abe, Lyu, Brandner, Wolfgang, Brandt, Timothy D., Carson, Joseph C., Egner, Sebastian, Feldt, Markus, Goto, Miwa, Grady, Carol A., Guyon, Olivier, Hayano, Yutaka, Hayashi, Masahiko, Hayashi, Saeko S., Henning, Thomas, Hodapp, Klaus W., Ishii, Miki, Iye, Masanori, Janson, Markus, Kandori, Ryo, Knapp, Gillian R., Kuzuhara, Masayuki, Kwon, Jungmi, Matsuo, Taro, Mcelwain, Michael W., Miyama, Shoken, Morino, Jun-Ichi, Moro-Martin, Amaya, Nishimura, Tetsuo, Pyo, Tae-Soo, Serabyn, Eugene, Suenaga, Takuya, Suto, Hiroshi, Suzuki, Ryuji, Takahashi, Yasuhiro H., Takato, Naruhisa, Terada, Hiroshi, Turner, Edwin L., Watanabe, Makoto, Yamada, Toru, Takami, Hideki, Usuda, Tomonori |
| Publication Year: |
2016 |
| Collection: |
Astrophysics |
| Subject Terms: |
Astrophysics - Earth and Planetary Astrophysics |
| More Details: |
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, both 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 degree 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 <~1Mjup.
Comment: 6 pages, 3 figures, accepted in PASJ on December 14, 2015 |
| Document Type: |
Working Paper |
| DOI: |
10.1093/pasj/psv133 |
| Access URL: |
http://arxiv.org/abs/1601.00742 |
| Accession Number: |
edsarx.1601.00742 |
| Database: |
arXiv |
