Extremely Metal-poor Representatives Explored by the Subaru Survey (EMPRESS). I. A Successful Machine-learning Selection of Metal-poor Galaxies and the Discovery of a Galaxy with M* <10(6) M-circle dot and 0.016Z(circle dot)

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  • Takashi Kojima
  • Masami Ouchi
  • Michael Rauch
  • Yoshiaki Ono
  • Kimihiko Nakajima
  • Yuki Isobe
  • Seiji Fujimoto
  • Yuichi Harikane
  • Takuya Hashimoto
  • Masao Hayashi
  • Yutaka Komiyama
  • Haruka Kusakabe
  • Ji Hoon Kim
  • Chien-Hsiu Lee
  • Shiro Mukae
  • Tohru Nagao
  • Masato Onodera
  • Takatoshi Shibuya
  • Yuma Sugahara
  • Masayuki Umemura
  • And 1 others
  • Kiyoto Yabe

We have initiated a new survey for local extremely metal-poor galaxies (EMPGs) with Subaru/Hyper Suprime-Cam (HSC) large-area (similar to 500 deg(2)) optical images reaching a 5 sigma limit of similar to 26 mag, about 100 times deeper than the Sloan Digital Sky Survey (SDSS). To selectZ/Z

Original languageEnglish
Article number142
JournalAstrophysical Journal
Volume898
Issue number2
Number of pages30
ISSN0004-637X
DOIs
Publication statusPublished - Aug 2020

    Research areas

  • STAR-FORMING GALAXIES, DIGITAL SKY SURVEY, MASS-METALLICITY RELATION, STELLAR POPULATIONS, LARGE-SAMPLE, LY-ALPHA, CHEMICAL ABUNDANCES, PHYSICAL-PROPERTIES, OXYGEN ABUNDANCES, DWARF GALAXIES

ID: 247542152