121 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- The University of TokyoJP11 papers
- Kyoto Sangyo UniversityJP9 papers
- National Astronomical Observatory of JapanJP9 papers
- Durham UniversityGB4 papers
- Institute of Space and Astronautical ScienceJP2 papers
- Japan Aerospace Exploration AgencyJP2 papers
- Arcetri Astrophysical ObservatoryIT1 paper
- Astronomical Observatory of CapodimonteIT1 paper
- Astronomical Observatory of RomeIT1 paper
- Centre National de la Recherche ScientifiqueFR1 paper
- Cerro Tololo Inter-American ObservatoryCL1 paper
- Collurania Teramo ObservatoryIT1 paper
11 papers
Mass function of a young cluster in a low-metallicity environment. Sh 2-209
Chikako Yasui, Naoto Kobayashi, Masao Saito +2
We present deep near-infrared (NIR) imaging of Sh 2-209 (S209), a low-metallicity ( dex) HII region in the Galaxy. From the NIR images, combined with astrometr…
Absorption Lines in the 0.91-1.33 m Spectra of Red Giants for Measuring Abundances of Mg, Si, Ca, Ti, Cr, and Ni
K. Fukue, N. Matsunaga, S. Kondo +13
Red giants show a large number of absorption lines in both optical and near-infrared wavelengths. Still, the characteristics of the lines in different wave passbands are not necess…
Effective temperatures of red supergiants estimated from line-depth ratios of iron lines in the YJ bands, 0.97--1.32 micron
Daisuke Taniguchi, Noriyuki Matsunaga, Mingjie Jian +10
Determining the effective temperatures (Teff) of red supergiants (RSGs) observationally is important in many fields of stellar physics and galactic astronomy, yet some significant…
Possible progression of mass flow processes around young intermediate-mass stars based on high-resolution near-infrared spectroscopy. I. Taurus
Chikako Yasui, Satoshi Hamano, Kei Fukue +12
We used the WINERED spectrograph to perform near-infrared high-resolution spectroscopy (resolving power ,000) of 13 young intermediate-mass stars in the Taurus star-forming…
First detection of -- (0,0) bands of interstellar C and CN
Satoshi Hamano, Hideyo Kawakita, Naoto Kobayashi +12
We report the first detection of C -- (0,0) and CN -- (0,0) absorption bands in the interstellar medium. The detection was made using the near…
WINERED high-resolution near-infrared line catalog: A-type star
H. Sameshima, Y. Ikeda, N. Matsunaga +13
We present a catalog of absorption lines in the z', Y, and J bands that we identified in 21 Lyn, a slowly rotating A0.5 V star. We detected 155 absorption features in the high-reso…
A newly-identified emission-line region around P Cygni
Misaki Mizumoto, Naoto Kobayashi, Satoshi Hamano +12
We present a high-resolution () near-infrared (9,100-13,500 ) long-slit spectrum of P Cygni obtained with the newly commissioned WINERED spectrograph in Japan.…
Correction of near-infrared high-resolution spectra for telluric absorption at 0.90-1.35 microns
Hiroaki Sameshima, Noriyuki Matsunaga, Naoto Kobayashi +15
We report a method of correcting a near-infrared (0.90-1.35 m) high-resolution () spectrum for telluric absorption using the corresponding spectrum of a telluric…
On the chemical abundances of Miras in clusters: V1 in the metal-rich globular NGC 5927
V. D'Orazi, D. Magurno, G. Bono +50
We present the first spectroscopic abundance determination of iron, alpha-elements (Si, Ca and Ti) and sodium for the Mira variable V1 in the metal-rich globular cluster NGC 5927.…
Near infrared diffuse interstellar bands toward the Cygnus OB2 association
Satoshi Hamano, Naoto Kobayashi, Sohei Kondo +16
We obtained the near-infrared (NIR) high-resolution () spectra of the seven brightest early-type stars in the Cygnus OB2 association for investigating the en…
Near-infrared and Mid-infrared Spectroscopy with the Infrared Camera (IRC) for AKARI
Youichi Ohyama, Takashi Onaka, Hideo Matsuhara +22
The Infrared Camera (IRC) is one of the two instruments on board the AKARI satellite. In addition to deep imaging from 1.8-26.5um for the pointed observation mode of the AKARI, it…