Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

• C. Yasui9 · h 19
• N. Kobayashi9 · h 32
• Y. Ikeda9 · h 19
• H. Kawakita8 · h 32
• H. Sameshima8 · h 21
• K. Fukue8 · h 13
• N. Matsunaga8 · h 34
• S. Hamano8 · h 13
• S. Kondo8 · h 16
• S. Otsubo8 · h 11
• M. Mizumoto7 · h 19
• K. Takenaka6 · h 9

• 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