• Data Retrieval System for Milky Way stars
  • Last update of the database on Jan 20, 2026
  • Last update of the system on April 11, 2018

• Data Retrieval System for MW and dwarf galaxies
  • Last update of the database on Dec. 11, 2019
  • Last update of the system on Nov 9, 2020

• SAGA viewer
  • easy comparisons between stars, released on Nov 2, 2010
  • It is not working at the moment.

Project-based Databases

• Stellar Data Retrieval System for the LAMOST-Subaru Joint Project
  • The original data are taken from “Four-hundred Very Metal-Poor Stars Studied with LAMOST and Subaru II. Elemental Abundances” by H. Li et al. (2022, ApJ, 931, 147).
  • Last update on data database on Nov 2, 2023.
    • Recompiled from the published version of the paper. Some data were removed, but will be available again in the future update.
  • Uploaded on June 28, 2022
  • See also “Four-hundred Very Metal-Poor Stars Studied with LAMOST and Subaru II. Survey Design, Follow-up Program, and Binary Frequency” by W. Aoki et al. (2022, ApJ, 931, 146).
• Text data in tsv format

Information

Under construction

SAGA Papers

Please cite the following papers if you think the SAGA database is helpful in writing your paper:

• “Stellar Abundances for the Galactic Archeology (SAGA) Database — Compilation of the Characteristics of Known Extremely Metal-Poor Stars”
  • T. Suda, Y. Katsuta, S. Yamada, T. Suwa, C. Ishizuka, Y. Komiya, K. Sorai, M. Aikawa, and M. Y. Fujimoto, PASJ, 60, 1159-1171, 2008.

See also,

• “The Stellar Abundances for Galactic Archaeology (SAGA) data base – II. Implications for mixing and nucleosynthesis in extremely metal-poor stars and chemical enrichment of the Galaxy”
  • T. Suda, S. Yamada, Y. Katsuta, Y. Komiya, C. Ishizuka, W. Aoki, and M. Y. Fujimoto, MNRAS, 412, 843-874, 2011.

• “The Stellar Abundances for Galactic Archaeology (SAGA) Database – III. Analysis of enrichment histories for elements and two modes of star formation during the early evolution of the Milky Way”
  • S. Yamada, T. Suda, Y. Komiya, W. Aoki, and M. Y. Fujimoto, MNRAS, 436, 1362-1380.

• “Stellar Abundances for Galactic Archaeology Database. IV. Compilation of stars in dwarf galaxies”
  • T. Suda, J. Hidaka, W. Aoki, Y. Katsuta, S. Yamada, M. Y. Fujimoto, Y. Ohtani, M. Masuyama, K. Noda, and K. Wada, PASJ, 69, 76 (1-28), 2017.

Contact Information

Please contact SAGA-admin_at_resceu.s.u-tokyo.ac.jp (replace _at_ with @) if you have any problems.

The SAGA database systems are maintained by Takuma Suda, Yutaka Katsuta, and Shimako Yamada.