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Results 1 - 32 of 32

Elemental abundances and classification of CEMP stars
- Virtual Journal - Volume 10, Issue 42 - article #2
- Dinah M. Allen, Sean G. Ryan, Silvia Rossi, Tim C. Beers, Stelios A. Tsangarides
- arXiv.org - Astrophysics - Volume: 2012, Issue: 19 Oct
- arXiv:1210.5009 [pdf, ps, other]
A high-resolution spectral analysis of three carbon-enhanced metal-poor stars
- Virtual Journal - Volume 6, Issue 36 - article #77
- Aruna Goswami, Wako Aoki, Timothy C. Beers, Norbert Christlieb, John E. Norris, Sean G., Ryan and Stelios Tsangarides
- Monthly Notices of the Royal Astronomical Society - Volume: 372, Issue: 1
- Abstract | References | Full Text HTML | Full Text PDF (720 KB) | Rights and Permissions
Carbon-Enhanced Metal-Poor Stars. III. Main-Sequence Turnoff Stars from the SDSS SEGUE Sample
- Virtual Journal - Volume 6, Issue 18 - article #27
- Wako Aoki, Timothy C. Beers, Thirupathi Sivarani, Brian Marsteller, Young Sun Lee, Satoshi Honda, John E. Norris, Sean G. Ryan, and Daniela Carollo
- The Astrophysical Journal - Volume: 678, Issue: 2
- Abstract-Full Text-PDF Version (1131 kB)
Carbon-Enhanced Metal-Poor Stars. III. Main-Sequence Turn-Off Stars from the SDSS/SEGUE Sample
- Virtual Journal - Volume 6, Issue 5 - article #2
- Wako Aoki, Timothy C. Beers, Thirupathi Sivarani, Brian Marsteller, Young Sun Lee, Satoshi Honda, John E. Norris, Sean G. Ryan, Daniela Carollo
- arXiv.org - Astrophysics - Volume: 2008, Issue: 31 Jan
- arXiv:0801.4187 [ps, pdf, other]
Carbon-enhanced Metal-poor Stars: Osmium and Iridium Abundances in the Neutron-Capture–enhanced Subgiants CS 31062-050 and LP 625-44
- Virtual Journal - Volume 5, Issue 47 - article #3
- Wako Aoki, Sara Bisterzo, Roberto Gallino, Timothy C. Beers, John E. Norris, Sean G. Ryan, and Stelios Tsangarides
- The Astrophysical Journal Letters - Volume: 650, Issue: 2
- ABSTRACT | FULL TEXT WITH ENHANCEMENTS | PDF (324 kB) | PS
Spectroscopic Studies of Extremely Metal-poor Stars with the Subaru High-Dispersion Spectrograph. IV. The α-Elementâ€“Enhanced Metal-poor Star BS 16934-002
- Virtual Journal - Volume 5, Issue 17 - article #5
- Wako Aoki, Satoshi Honda, Timothy C. Beers, Masahide Takada-Hidai, Nobuyuki Iwamoto, Nozomu Tominaga, Hideyuki Umeda, Ken'ichi Nomoto, John E. Norris, and Sean G. Ryan
- The Astrophysical Journal - Volume660, Issue 1
- ABSTRACT, FULL TEXT WITH ENHANCEMENTS, PDF (319 kB), PS
Carbon-enhanced Metal-poor Stars. I. Chemical Compositions of 26 Stars
- Virtual Journal - Volume 5, Issue 3 - article #2
- Wako Aoki, Timothy C. Beers, Norbert Christlieb, John E. Norris, Sean G. Ryan, and Stelios Tsangarides
- The Astrophysical Journal - Volume655, Issue 1
- ABSTRACT, FULL TEXT WITH ENHANCEMENTS, PDF (555 kB), PS
Spectroscopic Studies of Extremely Metal-Poor Stars with the Subaru High Dispersion Spectrograph. IV. The alpha-Element-Enhanced Metal-Poor Star BS16934-002
- Virtual Journal - Volume 5, Issue 2 - article #7
- Wako Aoki, Satoshi Honda, Timothy C. Beers, Masahide Takada-Hidai, Nobuyuki Iwamoto, Nozomu Tominaga, Hideyuki Umeda, Ken'ichi Nomoto, John E. Norris, Sean G. Ryan
- ArXiv - Astrophysics
- astro-ph/0701159 [abs, ps, pdf, other]
A high-resolution spectral analysis of three carbon-enhanced metal-poor stars
- Virtual Journal - Volume 4, Issue 44 - article #29
- Aruna Goswami, Wako Aoki, Timothy C. Beers, Norbert Christlieb, John E. Norris, Sean G. Ryan, Stelios Tsangarides
- Monthly Notices of the Royal Astronomical Society - Volume 372, Issue 372
- Abstract Abstract and References Full Text Article PDF [720KB]
A high-resolution spectral analysis of three carbon-enhanced metal-poor stars
- Virtual Journal - Volume 4, Issue 43 - article #27
- Aruna Goswami, Wako Aoki, Timothy C. Beers, Norbert Christlieb, John E. Norris, Sean G. Ryan, Stelios Tsangarides
- Monthly Notices of the Royal Astronomical Society - Volume 372, Issue 372
- Abstract Abstract and References Full Text Article PDF [720KB]
A high-resolution spectral analysis of three carbon-enhanced metal-poor stars
- Virtual Journal - Volume 4, Issue 42 - article #21
- Aruna Goswami, Wako Aoki, Timothy C. Beers, Norbert Christlieb, John E. Norris, Sean G. Ryan, Stelios Tsangarides
- Monthly Notices of the Royal Astronomical Society - Volume 372, Issue 372
- Abstract Abstract and References Full Text Article PDF [720KB]
A high-resolution spectral analysis of three carbon-enhanced metal-poor stars
- Virtual Journal - Volume 4, Issue 41 - article #38
- Aruna Goswami, Wako Aoki, Timothy C. Beers, Norbert Christlieb, John E. Norris, Sean G. Ryan, Stelios Tsangarides
- Monthly Notices of the Royal Astronomical Society - Volume 372, Issue 372
- Abstract Abstract and References Full Text Article PDF [720KB]
A high-resolution spectral analysis of three carbon-enhanced metal-poor stars
- Virtual Journal - Volume 4, Issue 40 - article #26
- Aruna Goswami, Wako Aoki, Timothy C. Beers, Norbert Christlieb, John E. Norris, Sean G. Ryan, Stelios Tsangarides
- Monthly Notices of the Royal Astronomical Society - Volume 372, Issue 372
- Abstract Abstract and References Full Text Article PDF [720KB]
Carbon Enhanced Metal-Poor Stars. I. Chemical Compositions of 26 Stars
- Virtual Journal - Volume 4, Issue 39 - article #11
- Wako Aoki, Timothy C. Beers, Norbert Christlieb, John E. Norris, Sean G. Ryan, Stelios Tsangarides
- ArXiv - Astrophysics
- astro-ph/0609702 [abs, ps, pdf, other]
A high-resolution spectral analysis of three carbon-enhanced metal-poor stars
- Virtual Journal - Volume 4, Issue 39 - article #21
- Aruna Goswami, Wako Aoki, Timothy C. Beers, Norbert Christlieb, John E. Norris, Sean G. Ryan, Stelios Tsangarides
- Monthly Notices of the Royal Astronomical Society - Volume 372, Issue 372
- Abstract Abstract and References Full Text Article PDF [720KB]
Carbon-Enhanced Metal-Poor Stars. Osmium and Iridium Abundances in the Neutron-Capture-Enhanced Subgiants CS31062-050 and LP625-44
- Virtual Journal - Volume 4, Issue 36 - article #11
- Wako Aoki, Sara Bisterzo, Roberto Gallino, Timothy C. Beers, John E. Norris, Sean G. Ryan, Stelios Tsangarides
- ArXiv - Astrophysics
- astro-ph/0609138 [abs, ps, pdf, other]
A high-resolution spectral analysis of three carbon-enhanced metal-poor stars
- Virtual Journal - Volume 4, Issue 32 - article #12
- Aruna Goswami, Wako Aoki, Timothy C. Beers, Norbert Christlieb, John E. Norris, Sean G. Ryan, Stelios Tsangarides
- ArXiv - Astrophysics
- astro-ph/0608106 [abs, ps, pdf, other]
The Origins of Two Classes of Carbon-enhanced, Metal-poor Stars
- Virtual Journal - Volume 3, Issue 49 - article #21
- Sean G. Ryan, Wako Aoki, John E. Norris, and Timothy C. Beers
- The Astrophysical Journal – Vol. 635, Issue 1 – December 2005
- ABSTRACT, FULL TEXT, PDF (140 kB), PS
Spectroscopic Studies of Very Metal-poor Stars with the Subaru High Dispersion Spectrograph. III. Light Neutron-Capture Elements
- Virtual Journal - Volume 3, Issue 39 - article #27
- Wako Aoki, Satoshi Honda, Timothy C. Beers, Toshitaka Kajino, Hiroyasu Ando, John E. Norris, Sean G. Ryan, Hideyuki Izumiura, Kozo Sadakane, and Masahide Takada-Hidai
- Astrophysical Journal – Vol. 632, No. 1 – September 2005
- ABSTRACT, FULL TEXT WITH ENHANCEMENTS, PDF (491 kB), PS
First enrichment of r -process elements in our Galaxy
- Virtual Journal - Volume 3, Issue 26 - article #97
- Yuhri Ishimaru, Shinya Wanajo, Wako Aoki, Sean G. Ryan and Nikos Prantzos
- Nuclear Physics A – Vol. 758 – July 2005
- Abstract , Abstract + References , PDF (384 K)
The Binary Frequency Among Carbon-enhanced, s -Process rich, Metal-poor Stars
- Virtual Journal - Volume 3, Issue 21 - article #17
- Sara Lucatello, Stelios Tsangarides, Timothy C. Beers, Eugenio Carretta, Raffaele G. Gratton, and Sean G. Ryan
- Astrophysical Journal – Vol. 625, No. 2 – May 2005
- ABSTRACT , FULL TEXT , PDF (126 kB), PS
Nucleosynthetic signatures of the first stars
- Virtual Journal - Volume 3, Issue 15 - article #39
- ANNA FREBEL, WAKO AOKI, NORBERT CHRISTLIEB, HIROYASU ANDO, MARTIN ASPLUND, PAUL S. BARKLEM, TIMOTHY C. BEERS, KJELL ERIKSSON, CORA FECHNER, MASAYUKI Y. FUJIMOTO, SATOSHI HONDA, TOSHITAKA KAJINO, TAKEO MINEZAKI, KEN'ICHI NOMOTO, JOHN E. NORRIS, SEAN G. RYAN, MASAHIDE TAKADA-HIDAI, STELIOS TSANGARIDES & YUZURU YOSHII
- Nature - Vol 434 No 7035 – April 2005
- First paragraph , Full text , PDF (181k), N&V
Spectroscopic Studies of Very Metal-Poor Stars with the Subaru High Dispersion Spectrograph. III. Light Neutron-Capture Elements
- Virtual Journal - Volume 3, Issue 9 - article #7
- Wako Aoki, Satoshi Honda, Timothy C. Beers, Toshitaka Kajino, Hiroyasu Ando, John E. Norris, Sean G. Ryan, Hideyuki Izumiura, Kozo Sadakane, Masahide Takada-Hidai
- arXiv - Astrophysics – March 2005
- astro-ph/0503032 [ abs , ps , pdf , other ]
Nucleosynthetic signatures of the first stars
- Virtual Journal - Volume 3, Issue 9 - article #10
- Anna Frebel, Wako Aoki, Norbert Christlieb, Hiroyasu Ando, Martin Asplund, Paul S. Barklem, Timothy C. Beers, Kjell Eriksson, Cora Fechner, Masayuki Y. Fujimoto, Satoshi Honda, Toshitaka Kajino, Takeo Minezaki, Ken`ichi Nomoto, John E. Norris, Sean G. Ryan, Masahide Takada-Hidai, Stelios Tsangarides, Yuzuru Yoshii
- arXiv - Astrophysics – March 2005
- astro-ph/0503021 [ abs , ps , pdf , other ]
The Binary Frequency Among Carbon-Enhanced, s-Process Rich, Metal-Poor Stars
- Virtual Journal - Volume 2, Issue 50 - article #5
- Sara Lucatello (1,2), Stelios Tsangarides (3), Timothy C. Beers (4), Eugenio Carretta (1,5), Raffaele G. Gratton (1), Sean G. Ryan (3) (1-INAF, Osservatorio Astronomico di Padova; 2- Dipartimento di Astronomia, Padova University; 3-The Open University; 4- MSU, 5-INAF, Osservatorio Astronomico di Bologna)
- arXiv - Astrophysics – December 2004
- astro-ph/0412422 [ abs , ps , pdf , other ]
The Halo Lithium Plateau: Outstanding Issues
- Virtual Journal - Volume 2, Issue 42 - article #5
- Sean G. Ryan, Lisa Elliott
- arXiv - Astrophysics – October 2004
- astro-ph/0410472 [ abs , ps , pdf , other ]
A low upper-limit on the lithium isotope ratio in HD140283
- Virtual Journal - Volume 2, Issue 39 - article #13
- Wako Aoki, Susumu Inoue, Satoshi Kawanomoto, Sean G. Ryan, Iain M. Smith, Takeru K. Suzuki, Masahide Takada-Hidai
- arXiv - Astrophysics – October 2004
- astro-ph/0409745 [ abs , ps , pdf , other ]
Oxygen Overabundance in the Extremely Iron-poor Star CS 29498-043
- Virtual Journal - Volume 2, Issue 23 - article #41
- Wako Aoki, John E. Norris, Sean G. Ryan, Timothy C. Beers, Norbert Christlieb, Stelios Tsangarides, and Hiroyasu Ando
- Astrophysical Journal – Volume 608 Number 1 – June 2004
- ABSTRACT , FULL TEXT WITH ENHANCEMENTS , PDF (179 kB), PS
Spectroscopic Studies of Extremely Metal-Poor Stars with the Subaru High Dispersion Spectrograph. I. Observational Data
- Virtual Journal - Volume 2, Issue 16 - article #20
- Satoshi Honda, Wako Aoki, Hiroyasu Ando, Hideyuki Izumiura, Toshitaka Kajino, Eiji Kambe, Satoshi Kawanomoto, Kunio Noguchi, Kiichi Okita, Kozo Sadakane, Bun'ei Sato, Masahide Takada-Hidai, Yoichi Takeda, Etsuji Watanabe, Timothy C. Beers, John E. Norris, and Sean G. Ryan
- The Astrophysical Journal Supplement Series - Volume 152, Number 1
- ABSTRACT , FULL TEXT , PDF (770 kB), PS
Oxygen Overabundance in the Extremely Iron-Poor Star CS29498-043
- Virtual Journal - Volume 2, Issue 8 - article #8
- Wako Aoki, John E. Norris, Sean G. Ryan, Timothy C. Beers, Norbert Christlieb, Stelios Tsangarides, Hiroyasu Ando
- arXiv.org – Astrophysics – February 2004
- astro-ph/0402585 [ abs , ps , pdf , other ]
The Detection of Low Eu Abundances in Extremely Metal-poor Stars and the Origin of r -Process Elements
- Virtual Journal - Volume 2, Issue 1 - article #31
- Yuhri Ishimaru, Shinya Wanajo, Wako Aoki, and Sean G. Ryan
- The Astrophysical Journal Letters - Volume 600, Number 1, Part 2
- ABSTRACT , FULL TEXT , PDF (216kb), PS
Europium Isotope Ratios in s -Process Element enhanced Metal-poor Stars: A New Probe of the ¹⁵¹Sm Branching
- Virtual Journal - Volume 1, Issue 3 - article #14
- Wako Aoki, Sean G. Ryan, Nobuyuki Iwamoto,Timothy, C. Beers, John E. Norris, Hiroyasu Ando,Toshitaka, Kajino, Grant J. Mathews, and Masayuki Y. Fujimoto
- The Astrophysical Journal Letters, Volume 592, Number 2, Part 2
- ABSTRACT , FULL TEXT , PDF (86kb), PS

Results 1 - 32 of 32

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