Chemical Abundances in the Secondary Star of the Black Hole Binary V4641 Sagittarii (SAX J1819.3-2525)

Department of Physical Science, Hiroshima University

National Astronomical Observatory of Japan

Astrophysical Science Center, Hiroshima University

Department of Astronomy, University of Tokyo

Department of Earth Science and Astronomy, College of Arts and Science, University of Tokyo

Subaru Telescope, National Astronomical Observatory

National Astronomical Observatory of Japan

Astronomical Institute, Osaka Kyoiku University

Department Of Astronomy And Research Center For The Early Universe The University Of Tokyo

National Astronomical Observatory

Department Of Earth Science And Astronomy College Of Arts And Science University Of Tokyo

Department Of Astronomy And Research Center For The Early Universe The University Of Tokyo

Research Institute For Fundamental Physics Kyoto University

Liberal Arts Education Center, Tokai University

National Astronomical Observatory Of Japan Tokyo

Nagoya Sci. Museum Aichi

Department of Physics and Astronomy, Michigan State University

National Astronomical Observatory Of Japan Hi Usa

Subaru Telescope National Astronomical Observatory Of Japan

Subaru Telescope

National Astronomical Observatory

Department Of Astronomy University Of Tokyo

Department Of Physical Science Hiroshima University

Astronomical Institute Osaka Kyoiku University

Astronomical Institute Osaka Kyoiku University

Astonomical Institute Osaka Kyoiku Uiversity

Department Of Physics And Astronomy And Joint Institute For Nuclear Astrophysics (jina) Michigan Sta

Nuclear Data Center, Japan Atomic Energy Agency

Department of Astronomy, School of Science, The University of Tokyo

Liberal Arts Education Center Tokai University

Research Institute For Fundamental Physics Kyoto University

Department Of Physics Waseda University

Research Institute For Fundamental Physics Kyoto Unviersity

Department Of Astronomy School Of Science The University Of Tokyo

Subaru Telescope National Astronomical Observatory Of Japan

Nuclear Data Center Japan Atomic Energy Agency

Subaru Telescope

Department Of Astronomy Faculty Of Science The University Of Tokyo

Nagoya Science Museum

Department of Astronomy, University of Tokyo

Department of Astronomy, University of Tokyo

Department of Physics, Ibaraki University : NASA-Goddard Space Flight Center

Department of Astronomy, University of Tokyo:Research Center for the Early Universe, University of Tokyo

Department of Physics, Ibaraki University

Research Institute for Fundamental Physics, Kyoto Unviersity ./ Department of Physics, Kyoto University