A Survey of Near-infrared Diffuse Interstellar Bands

Satoshi Hamano, Naoto Kobayashi, Hideyo Kawakita, Yuji Ikeda, Sohei Kondo, Hiroaki Sameshima, Akira Arai, Noriyuki Matsunaga, Chikako Yasui, Misaki Mizumoto, Kei Fukue, Natsuko Izumi (+2 others)
2018 Bulletin de la Société royale des sciences de Liège  
We propose a study of interstellar molecules with near-infrared (NIR) high-resolution spectroscopy as a science case for the 3.6-m Devasthal Optical Telescope (DOT). In particular, we present the results obtained on-going survey of diffuse interstellar bands (DIBs) in NIR with the newly developed NIR high-resolution spectrograph WINERED, which offers a high sensitivity in the wavelength range of 0.91-1.36 µm. Using the WINERED spectrograph attached to the 1.3-m Araki telescope in Japan, we
more » ... ned high-quality spectra of a number of early-type stars in various environments, such as diffuse interstellar clouds, dark clouds and star-forming regions, to investigate the properties of NIR DIBs and constrain their carriers. As a result, we successfully identified about 50 new NIR DIBs, where only five fairly strong DIBs had been identified previously. Also, some properties of DIBs in the NIR are discussed to constrain the carriers of DIBs.
doi:10.25518/0037-9565.7702 fatcat:xoo6rrwhg5evvfhuyhspxxdbmq