First galaxy SED: Contribution from pre-main-sequence stars

Hiroto Mitani, Naoki Yoshida, Kazuyuki Omukai, Takashi Hosokawa

Research output: Contribution to journalArticlepeer-review


We calculate the spectral energy distribution of the first galaxies which contain pre-main-sequence stars by using the stellar evolution code Modules for Experiments in Stellar Astrophysics, the spectra model BT-Settl, and the stellar population synthesis code PEGASE. We calculate the galaxy spectral energy distribution for Salpeter Initial Mass Function. We find that very young first galaxies are bright also in mid-infrared, and the contribution of pre-main-sequence stars can be significant over 0.1 Myr after a star-formation episode.

Original languageEnglish
Pages (from-to)287-288
Number of pages2
JournalProceedings of the International Astronomical Union
Issue numberS341
Publication statusPublished - 2019


  • galaxies: high-redshift
  • stars: formation
  • stars: pre-main-sequence

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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