6 papers
A systematic study of CO/SiO absorption features in early-type galaxies using AKARI/IRC near-infrared spectra
Eiko Kozaki, Takuma Kokusho, Keiji Nakayama +5
The origin of dust in early-type galaxies (ETGs) remains a long-standing question, with proposed sources being mass loss from evolved stars, galaxy mergers, or grain growth in the…
A systematic study on the aromatic and aliphatic hydrocarbon emission features of nearby galaxies using AKARI near-IR spectra
Tsubasa Kondo, Hidehiro Kaneda, Shinki Oyabu +7
Interstellar hydrocarbon dust containing aromatic and aliphatic hydrocarbons, like polycyclic aromatic hydrocarbons (PAHs), is believed to be processed by various factors including…
Near-infrared [P II] and [Fe II] line mapping of Galactic supernova remnants
Takuma Kokusho, Yuki Katsurada, Yong-Hyun Lee +7
Phosphorus (P) is one of the key ingredients for life, yet its origins in galaxies remain poorly understood. In order to investigate the production of P by supernovae, we performed…
A systematic study on the properties of aromatic and aliphatic hydrocarbon dust in active galactic nuclei with AKARI near-infrared spectroscopy
Risako Katayama, Hidehiro Kaneda, Takuma Kokusho +4
Recent near- and mid-infrared (IR) observations reveal the existence of appreciable amounts of aromatic and aliphatic hydrocarbon dust in the harsh environments of active galactic…
SILVIA: Ultra-precision formation flying demonstration for space-based interferometry
Takahiro Ito, Kiwamu Izumi, Isao Kawano +26
We propose SILVIA (Space Interferometer Laboratory Voyaging towards Innovative Applications), a mission concept designed to demonstrate ultra-precision formation flying between thr…
Magnetic fields in the massive star-forming region NGC 6334 and their relationship with the properties of dust filaments probed by [CII] and PAH emissions
Takayoshi Kusune, Hayata Tsuji, Shinki Oyabu +7
We carried out the near-infrared () imaging polarimetric observation with the polarimeter SIRPOL on the Infrared Survey Facility (IRSF) 1.4 m telescope and [CII] line…