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Browsing by Author Ryan, Sean G

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Showing results 1 to 20 of 31

A high-resolution spectral analysis of three carbon-enhanced metal-poor stars

Author(s)Goswami, Aruna; Aoki, Wako; Beers, Timothy C, et al
TypeJournal article
Date Published2006
Date Created-

A new sample of extremely/ultra metal-poor stars

Author(s)Garcia Perez, A E; Christlieb, N; Ryan, Sean G, et al
TypeConference paper
Date Published2008
Date CreatedJune 23-27 2008

A Search for Stars of Very Low Metals Abundance. III. UBV Photometry of Metal-Weak Candidates

Author(s)Norris, John; Ryan, Sean G; Beers, Timothy C
TypeJournal article
Date Published1999
Date Created-

A Subaru/High Dispersion Spectrograph Study of Lead (Pb) Abundances in Eight s-Process Element-Rich, Metal-Poor Stars

Author(s)Aoki, Wako; Ryan, Sean G; Norris, John, et al
TypeJournal article
Date Published2002
Date Created-

Carbon-enhanced Metal-poor Stars. I. Chemical Compositions of 26 Stars

Author(s)Aoki, Wako; Beers, Timothy C; Christlieb, Norbert, et al
TypeJournal article
Date Published2007
Date Created-

Carbon-Enhanced Metal-Poor Stars. III. Main-Sequence Turnoff Stars from the SDSS SEGUE Sample

Author(s)Aoki, Wako; Beers, Timothy C; Sivarani, T, et al
TypeJournal article
Date Published2008
Date Created-

Carbon-Enhanced Metal-Poor Stars: Osmium and Iridium Abundances in the Neutron-Capture-Enhanced Subgiants CS 31062-050 and LP 625-44

Author(s)Aoki, Wako; Bisterzo, Sara; Gallino, Roberto, et al
TypeJournal article
Date Published2006
Date Created-

Chemical Composition of the Carbon-rich, Extremely Metal Poor Star CS 29498-043: A New Class of Extremely Metal Poor Stars with Excesses of Magnesium and Silicon

Author(s)Aoki, Wako; Norris, John; Ryan, Sean G, et al
TypeJournal article
Date Published2002
Date Created-

Detection of Lead in the Carbon-rich, Very Metal-poor Star LP 625-44: A Strong Constraint on s-Process Nucleosynthesis at Low Metallicity

Author(s)Aoki, Wako; Norris, John; Ryan, Sean G, et al
TypeJournal article
Date Published2000
Date Created-

Estimation of Stellar Metal Abundance. II. A Recalibration of the Ca II K Technique, and the Autocorrelation Function Method

Author(s)Beers, Timothy C; Rossi, Silvia; Norris, John, et al
TypeJournal article
Date Published1999
Date Created-

Europium Isotope Ratios in s-Process Element-enhanced Metal-poor Stars: A new probe of the 151 Sm branching

Author(s)Aoki, Wako; Ryan, Sean G; Iwamoto, Nobuyuki, et al
TypeJournal article
Date Published2003
Date Created-

Extremely Metal-poor Stars. IX. CS 22949-037 and the Role of Hypernovae

Author(s)Norris, John; Ryan, Sean G; Beers, Timothy C, et al
TypeJournal article
Date Published2002
Date Created-

Extremely Metal-poor Stars. VII. The Most Metal-poor Dwarf, CS 22876-032

Author(s)Norris, John; Beers, Timothy C; Ryan, Sean G
TypeJournal article
Date Published2000
Date Created-

Extremely Metal-poor Stars. VIII. High-resolution, High Signal-to-noise Ratio Analysis of Five Stars with [Fe/H] ≤-3.5.

Author(s)Norris, John; Ryan, Sean G; Beers, Timothy C
TypeJournal article
Date Published2001
Date Created-

HE 1327-2326, An Unevolved Star with [Fe/H] < -5.0. I. A Comprehensive Abundance Analysis

Author(s)Aoki, Wako; Frebel, Anna; Christlieb, Norbert, et al
TypeJournal article
Date Published2006
Date Created-

Lead (Pb) in the C-rich, s-process rich, metal poor subgiant LP625-44

Author(s)Ryan, Sean G; Aoki, Wako; Norris, John, et al
TypeJournal article
Date Published2001
Date Created-

Mg abundances in metal-poor halo stars as a tracer of early Galactic mixing

Author(s)Arnone, E; Ryan, Sean G; Argast, D, et al
TypeJournal article
Date Published2005
Date Created-

Neutron Capture Elements in s -Process-rich, Very Metal-poor Stars

Author(s)Aoki, Wako; Ryan, Sean G; Norris, John, et al
TypeJournal article
Date Published2001
Date Created-

Neutron-capture elements in the Sr-rich, Ba-normal metal-poor giant CS22897-008

Author(s)Blake, Lisa; Ryan, Sean G; Norris, John, et al
TypeJournal article
Date Published2001
Date Created-

Nucleosynthetic signatures of the first stars

Author(s)Frebel, Anna; Aoki, Wako; Christlieb, Norbert, et al
TypeJournal article
Date Published2005
Date Created-

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