A high angular resolution near-infrared image that shows the intensity of polarization for the GG Tau A binary system was obtained with the Subaru Telescope. The image shows a circumbinary disk scattering the light fr...
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A high angular resolution near-infrared image that shows the intensity of polarization for the GG Tau A binary system was obtained with the Subaru Telescope. The image shows a circumbinary disk scattering the light from the central binary. The azimuthal profile of the intensity of polarization for the circumbinary disk is roughly reproduced by a simple disk model with the Henyey-Greenstein phase function and the Rayleigh function, indicating there are small dust grains at the surface of the disk. Combined with a previous observation of the circumbinary disk, our image indicates that the gap structure in the circumbinary disk orbits counterclockwise, but material in the disk orbits clockwise. We propose that there is a shadow caused by material located between the central binary and the circumbinary disk. The separations and position angles of the stellar components of the binary in the past 20 yr are consistent with the binary orbit with a = 33.4 AU and e = 0.34.
To assess the peripheral refractive changes that occur when eye growth decelerates in *** We measured peripheral refraction and on-axis vitreous chamber depth on a total of 53 marmosets;36 treated monocularly for 12 w...
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To assess the peripheral refractive changes that occur when eye growth decelerates in *** We measured peripheral refraction and on-axis vitreous chamber depth on a total of 53 marmosets;36 treated monocularly for 12 weeks 9 hrs/day(26 with-5 D contact lenses,10 with+5 D)and 17 untreated *** the 26 marmosets treated with-5 D,10 wore contact lenses 9 hrs/day without interruptions and were mea-sured at the end of 10 weeks of treatment(T10)and after 4 weeks of recovery(R14).Eight had both contact lenses removed for 30 mins twice/day(mid-morning and mid-afternoon)during the first four weeks of treatment(early interruption group)and eight had the lenses removed during the second four weeks of treatment(late interruption group).The two interruption groups were measured after 4,8 and 12 weeks of treatment only(T4,T8,T12).
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