Near-infrared imaging polarimetry of LkCa 15: A possible warped inner disk
Publications of the Astronomical Society of Japan, ISSN: 2053-051X, Vol: 68, Issue: 2
2016
- 19Citations
- 23Captures
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Article 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 ≤ 1M.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84965118354&origin=inward; http://dx.doi.org/10.1093/pasj/psv133; http://www.ncbi.nlm.nih.gov/pubmed/32848256; https://academic.oup.com/pasj/article/doi/10.1093/pasj/psv133/2223092; https://dx.doi.org/10.1093/pasj/psv133; https://academic.oup.com/pasj/article/68/2/L3/2223092
Oxford University Press (OUP)
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