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Title:
Subaru Explorations of EXO-Solar Planets and Disks
Authors:
Tamura, Motohide
Affiliation:
AA(National Astronomical Observatory of Japan, Osawa 2-21-1, Mitaka, Tokyo 181-8588, Japan)
Publication:
Journal of the Korean Astronomical Society, vol. 38, no. 2, pp. 319-324
Publication Date:
06/2005
Origin:
JKAS
Keywords:
infrared, exoplanet, disks, brown dwarf, coronagraph, stars: pre-main-sequence, imaging
Bibliographic Code:
2005JKAS...38..319T

Abstract

To date, more than 150 exo-solar planets have been observed by various methods such as spectroscopic, photometric, astrometric, gravitational lensing, pulsar timing methods. However, all these are indirect methods; they do not directly image the planets. Only free-floating planets or their `analog' have been directly detected so far. Thus the next milestone is the direct imaging of any kinds of planetary mass objects orbiting around normal (young) stars, which might have been associated with protoplanetary disks, the sites of planet formation. I will describe some SUBARU efforts to detect self-luminous young giant planets as companions as well as direct imaging of the protoplanetary disks of ˜ 100 AU size. The results of near-infrared coronagraphic imaging with adaptive optics are briefly presented on AB Aur, HD 142527, T Tau, and DH Tau. Our results demonstrate the importance of high-resolution (˜0.1 arcsec) direct imaging over indirect observations such as modeling based on spectral energy distributions. The SUBARU observations are a prelude to ALMA from the morphological point of view.

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Database: Astronomy
Physics
arXiv e-prints