A Survey of Near-infrared Diffuse Interstellar Bands
Naoto Kobayashi,
Kiso Observatory, Institute of Astronomy, School of Science, The University of Tokyo
Hideyo Kawakita,
Laboratory of Infrared High-resolution Spectroscopy, Kyoto Sangyo University
Sohei Kondo,
Laboratory of Infrared High-resolution Spectroscopy, Kyoto Sangyo University
Hiroaki Sameshima,
Laboratory of Infrared High-resolution Spectroscopy, Kyoto Sangyo University
Akira Arai,
Laboratory of Infrared High-resolution Spectroscopy, Kyoto Sangyo University
Noriyuki Matsunaga,
Kiso Observatory, Institute of Astronomy, School of Science, The University of Tokyo
Chikako Yasui,
National Astronomical Observatory of Japan
Misaki Mizumoto,
Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency and Department of Astronomy, Graduate School of Science, University of Tokyo
Kei Fukue,
Laboratory of Infrared High-resolution Spectroscopy, Kyoto Sangyo University
Natsuko Izumi,
National Astronomical Observatory of Japan
Shogo Otsubo,
Laboratory of Infrared High-resolution Spectroscopy, Kyoto Sangyo University
Keiichi Takenaka,
Laboratory of Infrared High-resolution Spectroscopy, Kyoto Sangyo University
Abstract
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 obtained 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.
Keywords : astronomy, astrophysics, infrared, interstellar, molecules
To cite this article
Satoshi Hamano, Naoto Kobayashi, Hideyo Kawakita, Yuji Ikeda, Sohei Kondo, Hiroaki Sameshima, Akira Arai, Noriyuki Matsunaga, Chikako Yasui, Misaki Mizumoto, Kei Fukue, Natsuko Izumi, Shogo Otsubo & Keiichi Takenaka, «A Survey of Near-infrared Diffuse Interstellar Bands», Bulletin de la Société Royale des Sciences de Liège [En ligne], Volume 87 - Année 2018, Actes de colloques, First Belgo-Indian Network for Astronomy & Astrophysics (BINA) workshop - November 2016 - Nainital, India, 276 - 280 URL : http://popups.ulg.be/0037-9565/index.php?id=7702.
