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Your search keyword '"Kozo Sadakane"' showing total 2 results
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2 results on '"Kozo Sadakane"'

1. A high-resolution VLT/FLAMES study of individual stars in the centre of the Fornax dwarf spheroidal galaxy (Corrigendum)

Author

V. Hill, Matthew Shetrone, P. Francois, Nobuo Arimoto, Andreas Kaufer, Amina Helmi, E. Tolstoy, Mike Irwin, Thomas Szeifert, K. A. Venn, Pascale Jablonka, Francesca Primas, Kozo Sadakane, M. Spite, Giuseppina Battaglia, B. Letarte, Joseph Louis LAGRANGE (LAGRANGE), Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Galaxies, Etoiles, Physique, Instrumentation (GEPI), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Observatoire de Paris, and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)

Subjects
Physics, 010504 meteorology & atmospheric sciences, Resolution (electron density), Astronomy and Astrophysics, Astrophysics, 01 natural sciences, Dwarf spheroidal galaxy, Stars, [SDU]Sciences of the Universe [physics], Space and Planetary Science, 0103 physical sciences, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], 010303 astronomy & astrophysics, ComputingMilieux_MISCELLANEOUS, 0105 earth and related environmental sciences
Abstract

International audience

Published
2018
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2. Chemical composition of the magnetic B star HR 5049

Author

Kozo Sadakane, K. Kato, Gautier Mathys, Y. Takeda, and M. Nishimura

Subjects
Physics, Magnetic line, Rare earth, Analytical chemistry, Astronomy, Astronomy and Astrophysics, Astrophysics, Effective temperature, Iron peak, Spectral line, Stars, Space and Planetary Science, Spectrum analysis, Chemical composition
Abstract

A spectrum synthesis analysis for photospheric lines in the magnetic B star HR 5049 is presented, based on a high quality spectrogram obtained with the EMMI spectrograph attached to the NTT at ESO. It is found that light elements such as He, C and O are under-abundant. One of the most notable features is the deficiency of He by more than − 2.0 dex. Co and Cl are over-abundant by +3.5 dex and +1.9 dex, respectively. Other iron peak elements are over-abundant ranging from +0.47 dex (Ti  )t o+1.94 dex (Cr ). For rare earth elements, the lines of once-ionized species are generally weak, while the third spectra (especially those of Pr and Nd) are very prominent. Although rare earth elements show significant over-abundances ranging from +3.0 dex to as large as +4.0 dex, Ba has the solar abundance. The Nd-Pr abundance difference, which shows an apparent decreasing trend with increasing effective temperature among CP stars, is found to be unusually small in HR 5049.

Published
2004
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