Skip to main content Accessibility help
×
Home

Searching for chemical relics of first stars with LAMOST and Subaru

  • Haining Li (a1), Wako Aoki (a2) (a3), Gang Zhao (a1), Satoshi Honda (a4), Norbert Christlieb (a5) and Takuma Suda (a6)...

Abstract

We report progresses of a joint project on searching for extremely metal-poor (EMP) stars based on LAMOST survey and Subaru follow-up observation. Follow-up high-resolution snapshot spectra have been obtained for 70 objects, resulting in 42 EMP stars. A number of chemically interesting objects have already been identified, including (1) Two UMP (ultra metal-poor) stars with [Fe/H] ~ −4.0. One of them is the second UMP turnoff star with Li detection. (2) A super Li-rich (A(Li) ~ 3.1) EMP giant. This is the most metal-poor and extreme example of Li enhancement in giants known to date, and will shed light on Li production during the evolution of red giants. (3) A few EMP stars showing extreme overabundance in heavy elements. Detailed abundances of these extreme objects and statistics obtained by the large sample of EMP stars will provide important constraints on the Galactic halo formation.

    • Send article to Kindle

      To send this article to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about sending to your Kindle. Find out more about sending to your Kindle.

      Note you can select to send to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

      Find out more about the Kindle Personal Document Service.

      Searching for chemical relics of first stars with LAMOST and Subaru
      Available formats
      ×

      Send article to Dropbox

      To send this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Dropbox.

      Searching for chemical relics of first stars with LAMOST and Subaru
      Available formats
      ×

      Send article to Google Drive

      To send this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Google Drive.

      Searching for chemical relics of first stars with LAMOST and Subaru
      Available formats
      ×

Copyright

Corresponding author

References

Hide All
Aoki, W., Beers, T. C., & Lee, Y. S., et al. 2013, AJ, 145, 13
Asplund, Martin, Lambert, David L. & Nissen, Poul Erik, et al. 2006, ApJ, 664, 229
Beers, T. C. & Christlieb, N. 2005, ARA&A, 43, 531
Boesgaard, A. M. & Steigman, G. 1985, ARA&A, 23, 319
Bromm, V. & Yoshida, N. 2011, ARA&A, 49, 373
Burris, D. L., Pilachowski, C. A., & Armandroff, T. E., et al. 2000, ApJ, 544, 302
Carlin, J. L., Lpine, S., & Newberg, H. J., et al. 2012, RAA, 12, 775
Carollo, D., Freeman, K., & Beers, T. C., et al. 2014, ApJ, 788, 180
Cayrel, R., Depagne, E., Spite, M., et al. 2004, A&A, 416, 1117
Cescutti, G., Chiappini, C., & Hirschi, , et al. 2013, A&A, 553, A51
Charbonnel, C. & Balachandran, S. C. 2000, A&A, 359, 563
Christlieb, N., Schrck, T., Frebel, A., et al. 2008, A&A, 484, 721
Cui, X.-Q., Zhao, Y.-H., & Chu, Y.-Q., et al. 2012, RAA, 12, 1197
Frebel, A. & Norris, J. E. 2015, ARA&A, in press, arXiv:1501.06921
Goriely, S., Sida, J.-L., & Lematre, J.-F., et al. 2013, Physical Review Letters, 111, 242502
Hansen, T., et al. 2014, ApJ, 787, 162
Li, H. N., Zhao, G., Christlieb, N., et al. 2015a, ApJ, 798, 110
Li, H. N., Aoki, W., Zhao, G., et al. 2015b, PASJ, in press, arXiv:1506.05684
Li, H. N., Aoki, W., Honda, S., et al. 2015c, RAA, 15, 1264
Masseron, T., Johnson, J. A., Plez, B., et al. 2010, A&A, 509, A93
Masseron, T., Johnson, J. A., Lucatello, S., et al. 2012, ApJ, 751, 14
Nollett, Kenneth M., Busso, M., & Wasserburg, G. J. 2003, ApJ, 582, 1036
Nomoto, K., Kobayashi, C., & Tominaga, N. 2013, ARA&A, 51, 457
Norris, et al. 2013a, ApJ, 762, 28
Norris, et al. 2013b, ApJ, 762, 25
Roederer, I. U., Cowan, J. J., & Preston, G. W., et al. 2014, MNRAS, 445, 2970
Sackmann, I.-Juliana & Boothroyd, Arnold I. 1999, ApJ, 510, 217
Sbordone, L., Bonifacio, P., Caffau, E., et al. 2010, A&A, 522, 26
Sneden, C., Preston, G. W., McWilliam, A., & Searle, L. 1994, ApJ, 431, L27
Sneden, C., McWilliam, A., & Preston, G. W., et al. 1996, ApJ, 467, 819
Spite, M., Caffau, E., Bonifacio, P., et al. 2013, A&A, 552, A107
Suda, T., Aikawa, M., & Machida, M. N., et al. 2004, ApJ, 611, 476
Suda, T. & Fujimoto, M. Y. 2010, MNRAS, 405, 177
Umeda, H. & Nomoto, K. 2005, ApJ, 619, 427
Woosley, S. E., Wilson, J. R., & Mathews, G. J., et al. 1994, ApJ, 433, 229
Yanny, B., Rockosi, C., & Newberg, H. J., et al. 2009, ApJ, 137, 4377
Yong, D., et al. 2013, ApJ, 762, 27
Zhao, G., Zhao, Y. H., & Chu, Y. Q., et al. 2012, RAA, 12, 723
MathJax
MathJax is a JavaScript display engine for mathematics. For more information see http://www.mathjax.org.

Keywords

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed