Bulletin de la Société Royale des Sciences de Liège Bulletin de la Société Royale des Sciences de Liège -  Volume 87 - Année 2018  Actes de colloques  First Belgo-Indian Network for Astronomy & Astrophysics (BINA) workshop - November 2016 - Nainital, India 

A Survey of Near-infrared Diffuse Interstellar Bands

Satoshi Hamano
Laboratory of Infrared High-resolution Spectroscopy, Kyoto Sangyo University, hamano@cc.kyoto-su.ac.jp
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
Yuji Ikeda
Photocoding
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

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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 : https://popups.uliege.be/0037-9565/index.php?id=7702.