Search Publications
Properties of Newly Formed Dust by SN 2006JC Based on Near- to Mid-Infrared Observation With AKARI
Tanaka, M.; Ohyama, Y.; Matsuhara, H. +18 more
We present our latest results on near- to mid-infrared (MIR) observation of supernova (SN) 2006jc at 200 days after the discovery using the Infrared Camera (IRC) on board AKARI. The near-infrared (2-5 µm) spectrum of SN 2006jc is obtained for the first time and is found to be well interpreted in terms of the thermal emission from amorphous c…
AKARI Detection of Far-Infrared Dust Emission in the Halo of NGC 253
Onaka, Takashi; Yamagishi, Mitsuyoshi; Kaneda, Hidehiro +1 more
We present new far-infrared (FIR) images of the edge-on starburst galaxy NGC 253 obtained with the Far-Infrared Surveyor (FIS) onboard AKARI at wavelengths of 90 µm and 140 µm. We have clearly detected FIR dust emission extended in the halo of the galaxy; there are two filamentary emission structures extending from the galactic disk up…
AKARI Infrared Observations of the Supernova Remnant G292.0+1.8: Unveiling Circumstellar Medium and Supernova Ejecta
Onaka, Takashi; Jeong, Woong-Seob; Koo, Bon-Chul +6 more
We present the results of AKARI observations of the O-rich supernova remnant (SNR) G292.0+1.8 using six Infrared Camera (IRC) and four Far-Infrared Surveyor bands covering 2.7-26.5 µm and 50-180 µm, respectively. The AKARI images show two prominent structures; a bright equatorial ring (ER) structure along the east-west direction and an…
Infrared Studies of Molecular Shocks in the Supernova Remnant HB21. I. Thermal Admixture of Shocked H2 Gas in the North
Koo, Bon-Chul; Lee, Ho-Gyu; Moon, Dae-Sik +2 more
We present near- and mid-infrared observations on the shock-cloud interaction region in the northern part of the supernova remnant HB21, performed with the infrared camera (IRC) aboard the AKARI satellite and the wide-field infrared camera (WIRC) at the Palomar 5 m telescope. The IRC 7 µm (S7), 11 µm (S11), and 15 µm (L15) band i…
The Mid-infrared View of Red Sequence Galaxies in Abell 2218 with AKARI
Goto, Tomotsugu; Kim, Seong Jin; Smail, Ian +16 more
We present the AKARI Infrared Camera (IRC) imaging observation of early-type galaxies (ETGs) in A2218 at zsime 0.175. Mid-infrared (MIR) emission from ETGs traces circumstellar dust emission from asymptotic giant branch (AGB) stars or/and residual star formation. Including the unique imaging capability at 11 and 15 µm, our AKARI data provide…
Hot Debris Dust Around HD 106797
Nakagawa, Takao; Onaka, Takashi; Ootsubo, Takafumi +10 more
Photometry of the A0 V main-sequence star HD 106797 with AKARI and Gemini/T-ReCS is used to detect excess emission over the expected stellar photospheric emission between 10 and 20 µm, which is best attributed to hot circumstellar debris dust surrounding the star. The temperature of the debris dust is derived as T d ~ 190 K by ass…
AKARI Near- and Mid-Infrared Spectroscopy of APM 08279+5255 at z = 3.91
Kawara, K.; Ohyama, Y.; Oyabu, S. +4 more
We present rest-frame optical/near-infrared spectra of the gravitationally lensed quasar APM 08279+5255 at z = 3.91 that has been taken using the Infrared Camera (IRC) onboard the AKARI infrared satellite. The observed continuum consists of two components; a power-law component dominating optical wavelengths which is the direct light from the cent…