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- University of HyogoJP28 papers
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- Centre National de la Recherche ScientifiqueFR2 papers
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4 papers · 1 filter
High-resolution spectroscopy of the extremely iron-poor post-AGB star CC Lyr
Wako Aoki, Tadafumi Matsuno, Satoshi Honda +3
High-resolution optical spectroscopy was conducted for the metal-poor post-AGB star CC Lyr to determine its chemical abundances and spectral line profiles. Our standard abundance a…
Photometric Measurements of H2O Ice Crystallinity on Trans-Neptunian Objects
Tsuyoshi Terai, Yoichi Itoh, Yumiko Oasa +2
We present a measurement of H2O ice crystallinity on the surface of trans-neptunian objects (TNOs) with near-infrared narrow-band imaging. The newly developed photometric technique…
Measurement of 1.7 to 74 MeV polarised gamma rays with the HARPO TPC
Y. Geerebaert, Ph. Gros, S. Amano +23
Current γ-ray telescopes based on photon conversions to electron-positron pairs, such as Fermi, use tungsten converters. They suffer of limited angular resolution at low energies,…
Statistical properties of superflares on solar-type stars based on the Kepler 1-min cadence data
Hiroyuki Maehara, Takuya Shibayama, Yuta Notsu +4
We searched for superflares on solar-type stars using the Kepler short-cadence (1-min sampling) data in order to detect superflares with short duration. We found 187 superflares on…