Hostname: page-component-8448b6f56d-wq2xx Total loading time: 0 Render date: 2024-04-19T11:12:00.267Z Has data issue: false hasContentIssue false
  • English
  • Français

LAMOST-Subaru exploration of chemical relics of first stars

Published online by Cambridge University Press:  02 August 2018

Haining Li ,
Wako Aoki ,
Gang Zhao ,
Takuma Suda ,
Satoshi Honda ,
Norbert Christlieb  and
Tadafumi Matsuno Open the ORCID record for Tadafumi Matsuno [Opens in a new window]
Haining Li
Affiliation:
Key Lab of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China email: lhn@nao.cas.cn
Wako Aoki
Affiliation:
National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo, 181-8588, Japan School of Physical Sciences, The Graduate University of Advanced Studies (SOKENDAI), 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
Gang Zhao
Affiliation:
Key Lab of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China
Takuma Suda
Affiliation:
Research Center for the Early Universe, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
Satoshi Honda
Affiliation:
University of Hyogo, 407-2, Nishigaichi, Sayo-cho, Sayo, Hyogo, 679-5313, Japan
Norbert Christlieb
Affiliation:
Zentrum für Astronomie der Universität Heidelberg, Landessternwarte, Königstuhl 12, D-69117 Heidelberg, Germany
Tadafumi Matsuno
Affiliation:
School of Physical Sciences, The Graduate University of Advanced Studies (SOKENDAI), 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Very metal-poor (VMP) stars preserve chemical signatures of early generations of stars, and are crutial to understand the early nucleosynthesis and first stars. Millions of stellar spectra obtained by LAMOST provide an unprecedented chance to enlarge the currently limited VMP star sample. Since 2014, a joint project on searching for VMP stars has been conducted based on the LAMOST survey and Subaru follow-up observations. So far, the project has obtained chemical abundances for about 250 VMP stars and a number of chemically interesting objects, e.g., three ultra metal-poor stars with [Fe/H] ~ − 4.0, a dozen Li-rich VMP stars distributed in a wide range of evolutionary stages. Statistics of the large homogeneous sample of VMP stars will be of great interest and importance to probe the chemical enrichment in the early Galaxy and low-mass star evolution.

Keywords

star:abundancesstars:Population IInucleosynthesis
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 13 , Symposium S334: Rediscovering our Galaxy , July 2017 , pp. 21 - 24
Copyright
Copyright © International Astronomical Union 2018 

References

Aoki, W., Beers, T. C., Lee, Y. S., et al., 2013, AJ, 145, 13Google Scholar
Beers, T. C. & Christlieb, N., 2005, ARA&A, 43, 531Google Scholar
Bromm, V. & Yoshida, N., 2011, ARA&A, 49, 373Google Scholar
Cayrel, R., Depagne, E., Spite, M., et al., 2004, A&A, 416, 1117Google Scholar
Charbonnel, C. & Balachandran, S. C., 2000, A&A, 359, 563Google Scholar
Cui, X.-Q., Zhao, Y.-H., Chu, Y.-Q., et al., 2012, RAA, 12, 1197Google Scholar
Frebel, A. & Norris, J. E. 2015, ARA&A, in press, arXiv:1501.06921Google Scholar
Jacobson, H. R., Keller, S., Frebel, A., et al., 2015, ApJ, 807, 171Google Scholar
Kirby, E., et al. 2016, ApJ, 819, 135Google Scholar
Li, H. N., Zhao, G., Christlieb, N., et al., 2015a, ApJ, 798, 110Google Scholar
Li, H. N., Aoki, W., Zhao, G., et al., 2015b, PASJ, 67, 84Google Scholar
Li, H. N., Aoki, W., Honda, S., et al., 2015c, RAA, 15, 1264Google Scholar
Nollett, Kenneth M., Busso, M., & Wasserburg, G. J., 2003, ApJ, 582, 1036Google Scholar
Nomoto, K., Kobayashi, C., & Tominaga, N., 2013, ARA&A, 51, 457Google Scholar
Norris, et al., 2013, ApJ, 762, 25Google Scholar
Roederer, I. U., Cowan, J. J., Preston, G. W., et al., 2014, MNRAS, 445, 2970Google Scholar
Ruchti, G. R., et al., 2011, ApJ, 743, 107Google Scholar
Sackmann, I.-Juliana & Boothroyd, Arnold I., 1999, ApJ, 510, 217Google Scholar
Spite, M., Caffau, E., Bonifacio, P., et al., 2013, A&A, 552, A107Google Scholar
Suda, T., Katsuta, Y., Yamada, S., et al., 2008, PASJ, 60, 1159Google Scholar
Zhao, G., Zhao, Y. H., Chu, Y. Q., et al., 2012, RAA, 12, 723Google Scholar