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Results 1 - 24 of 24

A Critique of the Spite Plateau, and the Astration of Primordial Lithium. (arXiv:2303.11497v1 [astro-ph.SR])
- Virtual Journal - Volume 21, Issue 12 - article #2
- J. E. Norris, D. Yong, A. Frebel, S. G. Ryan
- http://arxiv.org/abs/2303.11497
A three-dimensional hydrodynamical line profile analysis of iron lines and barium isotopes in HD140283
- Virtual Journal - Volume 13, Issue 14 - article #1
- A. J. Gallagher, H.-G. Ludwig, S. G. Ryan, W. Aoki
- arXiv.org - Astrophysics - Volume: 2015, Issue: 10 Apr
- arXiv:1504.02353 [pdf, other]
The Most Metal-poor Stars. I. Discovery, Data, and Atmospheric Parameters
- Virtual Journal - Volume 10, Issue 52 - article #50
- John E. Norris, M. S. Bessell, David Yong, N. Christlieb, P. S. Barklem, M. Asplund, Simon J. Murphy, Timothy C. Beers, Anna Frebel, and S. G. Ryan
- The Astrophysical Journal - Volume: 762, Issue: 1
- Abstract References Cited by Full text PDF (1.31 MB) Enhanced article HTML
The Most Metal-poor Stars. II. Chemical Abundances of 190 Metal-poor Stars Including 10 New Stars with [Fe/H] ≤ â€“3.5
- Virtual Journal - Volume 10, Issue 52 - article #51
- David Yong, John E. Norris, M. S. Bessell, N. Christlieb, M. Asplund, Timothy C. Beers, P. S. Barklem, Anna Frebel, and S. G. Ryan
- The Astrophysical Journal - Volume: 762, Issue: 1
- Abstract References Cited by Full text PDF (7.30 MB) Enhanced article HTML
The Most Metal-poor Stars. III. The Metallicity Distribution Function and Carbon-enhanced Metal-poor Fraction
- Virtual Journal - Volume 10, Issue 52 - article #52
- David Yong, John E. Norris, M. S. Bessell, N. Christlieb, M. Asplund, Timothy C. Beers, P. S. Barklem, Anna Frebel, and S. G. Ryan
- The Astrophysical Journal - Volume: 762, Issue: 1
- Abstract References Full text PDF (724 KB) Enhanced article HTML
The Most Metal-poor Stars. IV. The Two Populations with [Fe/H] lesssim â€“3.0
- Virtual Journal - Volume 10, Issue 52 - article #53
- John E. Norris, David Yong, M. S. Bessell, N. Christlieb, M. Asplund, Gerard Gilmore, Rosemary F. G. Wyse, Timothy C. Beers, P. S. Barklem, Anna Frebel, and S. G. Ryan
- The Astrophysical Journal - Volume: 762, Issue: 1
- Abstract References Cited by Full text PDF (1.13 MB) Enhanced article HTML
Elemental abundances and classification of carbon-enhanced metal-poor stars
- Virtual Journal - Volume 10, Issue 51 - article #79
- D. M. Allen, S. G. Ryan, S. Rossi, T. C. Beers and S. A. Tsangarides
- Astronomy and Astrophysics - Volume: 548, Issue: December 2012
- http://dx.doi.org/10.1051/0004-6361/201015615
  Abstract | Full HTML | PDF (604.0 KB) | References | Online Material | Tables at CDS | NASA ADS Abstract Service
The Most Metal-Poor Stars. IV. The Two Populations With [Fe/H] < -3.0
- Virtual Journal - Volume 10, Issue 46 - article #11
- John E. Norris, David Yong, M. S. Bessell, N. Christlieb, M. Asplund, Gerard Gilmore, Rosemary F.G. Wyse, Timothy C. Beers, P. S. Barklem, Anna Frebel, S. G. Ryan
- arXiv.org - Astrophysics - Volume: 2012, Issue: 16 Nov
- arXiv:1211.3157 [pdf, ps, other]
The Most Metal-Poor Stars. I. Discovery, Data, and Atmospheric Parameters
- Virtual Journal - Volume 10, Issue 33 - article #11
- John E. Norris, M. S. Bessell, David Yong, N. Christlieb, P. S. Barklem, M. Asplund, Simon J. Murphy, Timothy C. Beers, Anna Frebel, S. G. Ryan
- arXiv.org - Astrophysics - Volume: 2012, Issue: 17 Aug
- arXiv:1208.2999 [pdf, ps, other]
The Most Metal-Poor Stars. II. Chemical Abundances of 190 Metal-Poor Stars Including 10 New Stars With [Fe/H] < -3.5
- Virtual Journal - Volume 10, Issue 33 - article #12
- David Yong, John E. Norris, M. S. Bessell, N. Christlieb, M. Asplund, Timothy C. Beers, P. S. Barklem, Anna Frebel, S. G. Ryan
- arXiv.org - Astrophysics - Volume: 2012, Issue: 17 Aug
- arXiv:1208.3003 [pdf, ps, other]
The Most Metal-Poor Stars. III. The Metallicity Distribution Function and CEMP Fraction
- Virtual Journal - Volume 10, Issue 33 - article #13
- David Yong, John E. Norris, M. S. Bessell, N. Christlieb, M. Asplund, Timothy C. Beers, P. S. Barklem, Anna Frebel, S. G. Ryan
- arXiv.org - Astrophysics - Volume: 2012, Issue: 17 Aug
- arXiv:1208.3016 [pdf, ps, other]
The barium isotopic fractions in five metal-poor stars
- Virtual Journal - Volume 10, Issue 2 - article #10
- A. J. Gallagher, S. G. Ryan, A. Hosford, A. E. Garcia Perez, W. Aoki, S. Honda
- arXiv.org - Astrophysics - Volume: 2012, Issue: 13 Jan
- arXiv:1201.1757 [pdf, other]
The barium isotopic mixture for the metal-poor subgiant star HD140283
- Virtual Journal - Volume 8, Issue 35 - article #18
- A. J. Gallagher, S. G. Ryan, A. E. García Pérez, W. Aoki
- arXiv.org - Astrophysics - Volume: 2010, Issue: 27 Aug
- arXiv:1008.3541 [pdf, ps, other]
⁶Li/⁷Li estimates for metal-poor stars
- Virtual Journal - Volume 7, Issue 37 - article #27
- A. E. García Pérez, W. Aoki, S. Inoue, S. G. Ryan, T. K. Suzuki, and M. Chiba
- Astronomy and Astrophysics - Volume: 504, Issue: 1
- Abstract | Full HTML | PDF file (287.1 KB) | PS file (150.8 KB) | References | Original article
Lithium abundances of halo dwarfs based on excitation temperature - I. Local thermodynamic equilibrium
- Virtual Journal - Volume 7, Issue 3 - article #15
- A. Hosford, S. G. Ryan, A. E. García Pérez, J. E. Norris, and K. A. Olive
- Astronomy and Astrophysics - Volume: 493, Issue: 2
- Abstract | PDF file (247.0 KB) | PS file (114.5 KB)
Neutron-Capture Elements in the Very Metal Poor Star HD 122563
- Virtual Journal - Volume 4, Issue 22 - article #4
- S. Honda, W. Aoki, Y. Ishimaru, S. Wanajo, and S. G. Ryan
- Astrophysical Journal - Volume 643, Issue 2 - June, 2006
- ABSTRACT, FULL TEXT, PDF (344 kB), PS
HE 1327-2326, an Unevolved Star with [Fe/H] < -5.0. I. A Comprehensive Abundance Analysis
- Virtual Journal - Volume 4, Issue 10 - article #1
- W. Aoki, A. Frebel, N. Christlieb, J. E. Norris, T. C. Beers, T. Minezaki, P. S. Barklem, S. Honda, M. Takada-Hidai, M. Asplund, S. G. Ryan, S. Tsangarides, K. Eriksson, A. Steinhauer, C. P. Deliyannis, K. Nomoto, M. Y. Fujimoto, H. Ando, Y. Yoshii, and T. Kajino
- ABSTRACT , FULL TEXT , PDF (604 kB) , PS
Neutron-capture elements in the very metal-poor star HD122563
- Virtual Journal - Volume 4, Issue 6 - article #12
- S. Honda, W. Aoki, Y. Ishimaru, S. Wanajo, S. G. Ryan
- ArXiv - Astrophysics
- astro-ph/0602107 [abs, ps, pdf, other]
The Origins of Two Classes of Carbon-Enhanced, Metal-Poor Stars
- Virtual Journal - Volume 3, Issue 34 - article #16
- S. G. Ryan, W. Aoki, J. E. Norris, T.C. Beers
- ArXiv - Astrophysics – August 2005
- astro-ph/0508475 [ abs , ps , pdf , other ]
Mg abundances in metal-poor halo stars as a tracer of early Galactic mixing
- Virtual Journal - Volume 3, Issue 3 - article #13
- E. Arnone, S. G. Ryan, D. Argast, J. E. Norris and T. C. Beers
- Astronomy and Astrophysics – Vol 430, No 2 – January 2005
- Abstract , PDF file (316 KB) , PS file (103 KB)
On the Binarity of Carbon-Enhanced, Metal-Poor Stars
- Virtual Journal - Volume 2, Issue 49 - article #8
- S. Tsangarides (1), S. G. Ryan (1), T. C. Beers (2) ((1) The Open University, Milton Keynes, UK, (2) Michigan State University and JINA, East Lansing, USA)
- arXiv - Astrophysics – December 2004
- astro-ph/0412160 [ abs , ps , pdf , other ]
The Hamburg/ESO R-process Enhanced Star survey (HERES) - I. Project description, and discovery of two stars with strong enhancements of neutron-capture elements
- Virtual Journal - Volume 2, Issue 49 - article #32
- N. Christlieb, T. C. Beers, P. S. Barklem, M. Bessell, V. Hill, J. Holmberg, A. J. Korn, B. Marsteller, L. Mashonkina, Y.-Z. Qian, S. Rossi, G. J. Wasserburg, F.-J. Zickgraf, K.-L. Kratz, B. NordstrÃ¶m, B. Pfeiffer, J. Rhee and S. G. Ryan
- Astronomy and Astrophysics – Vol 428, No 3 – December 2004
- Abstract , PDF file (306 KB) , PS file (112 KB)
On the binarity of carbon-enhanced, metal-poor stars
- Virtual Journal - Volume 2, Issue 48 - article #89
- S. Tsangarides, S. G. Ryan, T. C. Beers
- PDF file
A low upper-limit on the lithium isotope ratio in HD140283
- Virtual Journal - Volume 2, Issue 47 - article #26
- W. Aoki, S. Inoue, S. Kawanomoto, S. G. Ryan, I. M. Smith, T. K. Suzuki and M. Takada-Hidai
- Astronomy and Astrophysics – Vol 428, No 2 – November 2004
- Abstract , PDF file (244 KB) , PS file (82.1 KB)

Results 1 - 24 of 24

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