145 research outputs found
Life-sized Figures by Kamehachi Yasumoto as Gifts to Museums by Japanese Entrepreneurs <Articles>
In the late 19th century, Japanese collections housed at ethnographic museums in Europe and the USA included life-sized figures exhibiting aspects of Japanese life, in particular, kimonos. Most of these figures were purchased by people visiting Japan at around that time. Six figures can be attributed to Kamehachi Yasumoto III, who learnt realistic representation and simple structure in creating Iki-ningyo from his father. Around 1900, he modified the masks he created to have a neutral, delicate expression and refined the body structure to one that would look better in kimonos. His acknowledgement of contemporary demands provided him a platform to display his figures in international expositions and department stores.
The donation of Yasumoto’s figures to Kelvingrove Museum in Glasgow, UK, and Carnegie Museum in Pittsburgh, USA, indicates that Japanese entrepreneurs were committed to improving the figures representing Japan to correct the false perceptions about their country. Yasumoto was commissioned the figures because of his elegant style and reputation established at the time his father was active in the field. The reserved expression on the faces of his models were perceived positively, resulting in the figures being accepted as museum displays for over 60 years.本研究はJSPS科研費JP18K0062の助成を受けたものです
Physical Relation of Source I to IRc2 in the Orion KL Region
We present mid-infrared narrow-band images of the Orion BN/KL region, and
N-band low-resolution spectra of IRc2 and the nearby radio source "I." The
distributions of the silicate absorption strength and the color temperature
have been revealed with a sub-arcsecond resolution. The detailed structure of
the 7.8 micron/12.4 micron color temperature distribution was resolved in the
vicinity of IRc2. A mid-infrared counterpart to source I has been detected as a
large color temperature peak. The color temperature distribution shows an
increasing gradient from IRc2 toward source I, and no dominant temperature peak
is seen at IRc2. The spectral energy distribution of IRc2 could be fitted by a
two-temperature component model, and the "warmer component" of the infrared
emission from IRc2 could be reproduced by scattering of radiation from source
I. IRc2 itself is not self-luminous, but is illuminated and heated by an
embedded luminous young stellar object located at source I.Comment: 20 pages, 11 figures. Minor corrections had been done in the ver.2.
Accepted for publication in PAS
Ionization of Polycyclic Aromatic Hydrocarbon Molecules around the Herbig Ae/Be environment
We present the results of mid-infrared N-band spectroscopy of the Herbig
Ae/Be system MWC1080 using the Cooled Mid-Infrared Camera and Spectrometer
(COMICS) on board the 8m Subaru Telescope. The MWC1080 has a geometry such that
the diffuse nebulous structures surround the central Herbig B0 type star. We
focus on the properties of polycyclic aromatic hydrocarbons (PAHs) and PAH-like
species, which are thought to be the carriers of the unidentified infrared
(UIR) bands in such environments. A series of UIR bands at 8.6, 11.0, 11.2, and
12.7um is detected throughout the system and we find a clear increase in the
UIR 11.0um/11.2um ratio in the vicinity of the central star. Since the UIR
11.0um feature is attributed to a solo-CH out-of-plane wagging mode of cationic
PAHs while the UIR 11.2um feature to a solo-CH out-of-plane bending mode of
neutral PAHs, the large 11.0um/11.2um ratio directly indicates a promotion of
the ionization of PAHs near the central star.Comment: accepted for publication in Advances in Geoscienc
Crystalline Silicate Feature of the Vega-like star HD145263
We have observed the 8-13 m spectrum (R250) of the Vega-like star
candidate HD145263 using Subaru/COMICS. The spectrum of HD145263 shows the
broad trapezoidal silicate feature with the shoulders at 9.3 m and 11.44
m, indicating the presence of crystalline silicate grains. This detection
implies that crystalline silicate may also be commonly present around Vega-like
stars. The 11.44 m feature is slightly shifted to a longer wavelength
compared to the usual 11.2-3 m crystalline forsterite feature detected
toward Herbig Ae/Be stars and T Tauri stars. Although the peak shift due to the
effects of the grain size can not be ruled out, we suggest that Fe-bearing
crystalline olivine explains the observed peak wavelength fairly well.
Fe-bearing silicates are commonly found in meteorites and most interplanetary
dust particles, which originate from planetesimal-like asteroids. According to
studies of meteorites, Fe-bearing silicate must have been formed in asteroidal
planetesimals, supporting the scenario that dust grains around Vega-like stars
are of planetesimal origin, if the observed 11.44 m peak is due to
Fe-bearing silicates.Comment: accepted for Publication in ApJ
Direct detection of a flared disk around a young massive star HD200775 and its 10 to 1000AU scale properties
We made mid-infrared observations of the 10Msun Herbig Be star HD200775 with
the Cooled Mid-Infrared Camera and Spectrometer (COMICS) on the 8.2m Subaru
Telescope. We discovered diffuse emission of an elliptical shape extended in
the north-south direction inabout 1000AU radius around unresolved excess
emission. The diffuse emission is perpendicular to the cavity wall formed by
the past outflow activity and is parallel to the projected major axis of the
central close binary orbit. The centers of the ellipse contours of the diffuse
emission are shifted from the stellar position and the amount of the shift
increases as the contour brightness level decreases. The diffuse emission is
well explained in all of geometry, size, and configuration by an inclined
flared disk where only its surface emits the mid-infrared photons. Our results
give the first well-resolved infrared disk images around a massive star and
strongly support that HD200775 is formed through the disk accretion. The disk
survives the main accretion phase and shows a structure similar to that around
lower-mass stars with 'disk atmosphere'. At the same time, the disk also shows
properties characteristic to massive stars such as photoevaporation traced by
the 3.4mm free-free emission and unusual silicate emission with a peak at
9.2micron, which is shorter than that of many astronomical objects. It provides
a good place to compare the disk properties between massive and lower-mass
stars.Comment: 18 pages, 8 figures, accepted by The Astrophysical Journa
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