| Year |
Citation |
Score |
| 2016 |
Thompson GP, Ryan SG, Sibbons LF. The rotation of the halo of NGC 6822 from the radial velocities of carbon stars Monthly Notices of the Royal Astronomical Society. 462: 3376-3385. DOI: 10.1093/Mnras/Stw1193 |
0.414 |
|
| 2015 |
Gallagher AJ, Ludwig HG, Ryan SG, Aoki W. A three-dimensional hydrodynamical line profile analysis of iron lines and barium isotopes in HD 140283 Astronomy and Astrophysics. 579. DOI: 10.1051/0004-6361/201424803 |
0.481 |
|
| 2015 |
Sibbons LF, Ryan SG, Irwin M, Napiwotzki R. The AGB population in IC 1613 using JHK photometry Astronomy and Astrophysics. 573. DOI: 10.1051/0004-6361/201423982 |
0.499 |
|
| 2013 |
Norris JE, Yong D, Bessell MS, Christlieb N, Asplund M, Gilmore G, Wyse RFG, Beers TC, Barklem PS, Frebel A, Ryan SG. The most metal-poor stars. IV. the two populations with [Fe/H] ≲ -3.0 Astrophysical Journal. 762. DOI: 10.1088/0004-637X/762/1/28 |
0.781 |
|
| 2013 |
Yong D, Norris JE, Bessell MS, Christlieb N, Asplund M, Beers TC, Barklem PS, Frebel A, Ryan SG. The most metal-poor stars. III. the metallicity distribution function and carbon-enhanced metal-poor fraction Astrophysical Journal. 762. DOI: 10.1088/0004-637X/762/1/27 |
0.819 |
|
| 2013 |
Yong D, Norris JE, Bessell MS, Christlieb N, Asplund M, Beers TC, Barklem PS, Frebel A, Ryan SG. The most metal-poor stars. II. Chemical abundances of 190 metal-poor stars including 10 new stars with [Fe/H] ≤ -3.5 Astrophysical Journal. 762. DOI: 10.1088/0004-637X/762/1/26 |
0.825 |
|
| 2013 |
Norris JE, Bessell MS, Yong D, Christlieb N, Barklem PS, Asplund M, Murphy SJ, Beers TC, Frebel A, Ryan SG. The most metal-poor stars. I. Discovery, data, and atmospheric parameters Astrophysical Journal. 762. DOI: 10.1088/0004-637X/762/1/25 |
0.779 |
|
| 2012 |
Gallagher AJ, Ryan SG, Hosford A, García Pérez AE, Aoki W, Honda S. The barium isotopic fractions in five metal-poor stars Astronomy & Astrophysics. 538: A118. DOI: 10.1051/0004-6361/201118382 |
0.574 |
|
| 2012 |
Sibbons LF, Ryan SG, L. Cioni M, Irwin M, Napiwotzki R. The AGB population of NGC 6822: distribution and the C/M ratio fromJHKphotometry Astronomy & Astrophysics. 540: A135. DOI: 10.1051/0004-6361/201118365 |
0.598 |
|
| 2012 |
Allen DM, Ryan SG, Rossi S, Beers TC, Tsangarides SA. Elemental abundances and classification of carbon-enhanced metal-poor stars Astronomy and Astrophysics. 548. DOI: 10.1051/0004-6361/201015615 |
0.627 |
|
| 2010 |
Thatte N, Tecza M, Clarke F, Davies RL, Remillieux A, Bacon R, Lunney D, Arribas S, Mediavilla E, Gago F, Bezawada N, Ferruit P, Fragoso A, Freeman D, Fuentes J, ... ... Ryan S, et al. HARMONI: A single-field wide-band integral-field spectrograph for the European ELT Proceedings of Spie. 7735. DOI: 10.1117/12.857445 |
0.301 |
|
| 2010 |
Gallagher AJ, Ryan SG, García Pérez AE, Aoki W. The barium isotopic mixture for the metal-poor subgiant star HD 140283 Astronomy & Astrophysics. 523: A24. DOI: 10.1051/0004-6361/201014970 |
0.466 |
|
| 2010 |
Hosford A, García Pérez AE, Collet R, Ryan SG, Norris JE, Olive KA. Lithium abundances of halo dwarfs based on excitation temperatures: II. Non-local thermodynamic equilibrium Astronomy and Astrophysics. 511. DOI: 10.1051/0004-6361/200913693 |
0.651 |
|
| 2009 |
Hosford A, Ryan SG, Pérez AEG, Norris JE, Olive KA. Lithium abundances of halo dwarfs based on excitation temperature I. Local thermodynamic equilibrium Astronomy and Astrophysics. 493: 601-612. DOI: 10.1051/0004-6361:200810240 |
0.672 |
|
| 2009 |
García Pérez AE, Aoki W, Inoue S, Ryan SG, Suzuki TK, Chiba M. 6Li/7Li estimates for metal-poor stars Astronomy & Astrophysics. 504: 213-223. DOI: 10.1051/0004-6361/200912289 |
0.591 |
|
| 2009 |
Elliott LM, Ryan SG. Ultra-lithium-deficient halo stars Proceedings of the International Astronomical Union. 5: 331-332. DOI: 10.1017/S1743921310004333 |
0.485 |
|
| 2009 |
Allen DM, Ryan SG, Rossi S, Tsangarides SA. s/r ratios in carbon-enhanced metal-poor stars Proceedings of the International Astronomical Union. 5: 118-119. DOI: 10.1017/S1743921310000335 |
0.5 |
|
| 2008 |
García Pérez AE, Christlieb N, Ryan SG, Beers TC, Aoki W, Asplund M, Barklem PS, Bessell MS, Eriksson K, Frebel A, Gustafsson B, Korn AJ, Nordström B, Norris JE. A new sample of extremely/ultra metal-poor stars Physica Scripta T. DOI: 10.1088/0031-8949/2008/T133/014036 |
0.726 |
|
| 2008 |
Lawton B, Churchill CW, York BA, Ellison SL, Snow TP, Johnson RA, Ryan SG, Benn CR. Limits on reddening and gas-to-dust ratios for seven intermediate redshift damped LYα absorbers from diffuse interstellar bands Astronomical Journal. 136: 994-1012. DOI: 10.1088/0004-6256/136/3/994 |
0.481 |
|
| 2008 |
Aoki W, Beers TC, Sivarani T, Marsteller B, Lee YS, Honda S, Norris JE, Ryan SG, Carollo D. Carbon-enhanced metal-poor stars. III. Main-sequence turnoff stars from the SDSS SEGUE sample Astrophysical Journal. 678: 1351-1371. DOI: 10.1086/533517 |
0.784 |
|
| 2008 |
Lawton B, Churchill CW, York BA, Ellison SL, Snow TP, Johnson RA, Ryan SG, Benn CR. Evidence of Magellanic-like moderate redshift H i-rich galaxies Proceedings of the International Astronomical Union. 4: 479-485. DOI: 10.1017/S1743921308028895 |
0.378 |
|
| 2007 |
Aoki W, Honda S, Beers TC, Takada-Hidai M, Iwamoto N, Tominaga N, Umeda H, Nomoto K, Norris JE, Ryan SG. Spectroscopic studies of extremely metal-poor stars with the subaru high-dispersion spectrograph. IV. The α-element-enhanced metal-poor star BS 16934-002 Astrophysical Journal. 660: 747-761. DOI: 10.1086/512601 |
0.75 |
|
| 2007 |
Aoki W, Beers TC, Christlieb N, Norris JE, Ryan SG, Tsangarides S. Carbon-enhanced metal-poor stars. I. Chemical compositions of 26 stars Astrophysical Journal. 655: 492-521. DOI: 10.1086/509817 |
0.777 |
|
| 2007 |
Aldenius M, Tanner JD, Johansson S, Lundberg H, Ryan SG. Experimental Mg I oscillator strengths and radiative lifetimes for astrophysical applications on metal-poor stars New data for the Mg I b triplet Astronomy and Astrophysics. 461: 767-773. DOI: 10.1051/0004-6361:20066266 |
0.511 |
|
| 2006 |
Goswami A, Aoki W, Beers TC, Christlieb N, Norris JE, Ryan SG, Tsangarides S. A high-resolution spectral analysis of three carbon-enhanced metal-poor stars Monthly Notices of the Royal Astronomical Society. 372: 343-356. DOI: 10.1111/J.1365-2966.2006.10877.X |
0.75 |
|
| 2006 |
Aoki W, Bisterzo S, Gallino R, Beers TC, Norris JE, Ryan SG, Tsangarides S. Carbon-enhanced metal-poor stars: Osmium and iridium abundances in the neutron-capture-enhanced subgiants CS 31062-050 and LP 625-44 Astrophysical Journal. 650: L127-L130. DOI: 10.1086/508878 |
0.7 |
|
| 2006 |
York BA, Ellison SL, Lawton B, Churchill CW, Snow TP, Johnson RA, Ryan SG. Detection of diffuse interstellar bands in the z = 0.5 damped Lyα system toward AO 0235+ 164 Astrophysical Journal. 647. DOI: 10.1086/505907 |
0.332 |
|
| 2006 |
Honda S, Aoki W, Ishimaru Y, Wanajo S, Ryan SG. Neutron-Capture Elements in the Very Metal Poor Star HD 122563* The Astrophysical Journal. 643: 1180-1189. DOI: 10.1086/503195 |
0.593 |
|
| 2006 |
Aoki W, Frebel A, Christlieb N, Norris JE, Beers TC, Minezaki T, Barklem PS, Honda S, Takada-Hidai M, Asplund M, Ryan SG, Tsangarides S, Eriksson K, Steinhauer A, Deliyannis CP, et al. HE 1327-2326, An unevolved star with [Fe/H] < -5.0. I. A comprehensive abundance analysis Astrophysical Journal. 639: 897-917. DOI: 10.1086/497906 |
0.824 |
|
| 2006 |
Honda S, Aoki W, Ishimaru Y, Wanajo S, Ryan SG. Subaru/HDS studies of r-process elements in metal-poor stars from near UV-spectra Aip Conference Proceedings. 847: 221-226. DOI: 10.1063/1.2234405 |
0.445 |
|
| 2006 |
Aoki W, Frebel A, Christlieb N, Norris JE, Beers TC, Minezaki T, Barklem PS, Honda S, Takada-Hidai M, Asplund M, Ryan SG, Tsangarides S, Eriksson K, Steinhauer A, Deliyannis CP, et al. An abundance study of the most iron-poor star HE1327-2326 with Subaru/HDS Aip Conference Proceedings. 847: 53-58. DOI: 10.1063/1.2234382 |
0.804 |
|
| 2006 |
Aoki W, Ryan SG, Norris JE, Beers TC, Christlieb N, Tsangarides S, Ando H. The chemical compositions of carbon-enhanced metal-poor stars Eso Astrophysics Symposia. 2006: 124-125. DOI: 10.1007/978-3-540-34136-9_44 |
0.628 |
|
| 2006 |
Tanner JD, Ryan SG, Norris JE. A high resolution spectroscopic study of eight metal-poor stars Proceedings of Science. |
0.674 |
|
| 2005 |
Frebel A, Aoki W, Christlieb N, Ando H, Asplund M, Barklem PS, Beers TC, Eriksson K, Fechner C, Fujimoto MY, Honda S, Kajino T, Minezaki T, Nomoto K, Norris JE, ... Ryan SG, et al. Nucleosynthetic signatures of the first stars. Nature. 434: 871-3. PMID 15829957 DOI: 10.1038/Nature03455 |
0.816 |
|
| 2005 |
Ryan SG, Aoki W, Norris JE, Beers TC. The origins of two classes of carbon-enhanced, metal-poor stars Astrophysical Journal. 635: 349-354. DOI: 10.1086/497282 |
0.735 |
|
| 2005 |
Aoki W, Honda S, Beers TC, Kajino T, Ando H, Norris JE, Ryan SG, Izumiura H, Sadakane K, Takada-Hidai M. Spectroscopic studies of very metal-poor stars with the Subaru High Dispersion Spectrograph. III. Light neutron-capture elements Astrophysical Journal. 632: 611-637. DOI: 10.1086/432862 |
0.775 |
|
| 2005 |
Lucatello S, Tsangarides S, Beers TC, Carretta E, Gratton RG, Ryan SG. The Binary Frequency Among Carbon‐enhanced,s‐Process–rich, Metal‐poor Stars The Astrophysical Journal. 625: 825-832. DOI: 10.1086/428104 |
0.392 |
|
| 2005 |
Arnone E, Ryan SG, Argast D, Norris JE, Beers TC. Mg abundances in metal-poor halo stars as a tracer of early Galactic mixing Astronomy and Astrophysics. 430: 507-522. DOI: 10.1051/0004-6361:20041034 |
0.72 |
|
| 2005 |
Ishimaru Y, Wanajo S, Aoki W, Ryan SG, Prantzos N. Chemical evolution of the galactic halo and the origin of precious metals Proceedings of the International Astronomical Union. 1: 489-490. DOI: 10.1017/S1743921305006290 |
0.536 |
|
| 2005 |
Honda S, Aoki W, Ishimaru Y, Wanajo S, Ryan SG, Kajino T, Ando H, Beers TC. Subaru/HDS Studies of r-Process Elements in Metal-Poor Stars from Near-UV Spectra Proceedings of the International Astronomical Union. 1: 429-434. DOI: 10.1017/S1743921305006162 |
0.445 |
|
| 2005 |
Frebel A, Aoki W, Christlieb N, Ando H, Asplund M, Barklem PS, Beers TC, Eriksson K, Fechner C, Fujimoto MY, Honda S, Kajino T, Minezaki T, Nomoto K, Norris JE, ... Ryan SG, et al. The new record holder for the most iron-poor star: HE 1327-2326, a dwarf or subgiant with [Fe/H] = -5.4 Proceedings of the International Astronomical Union. 1: 207-212. DOI: 10.1017/S1743921305005569 |
0.812 |
|
| 2005 |
Aoki W, Beers TC, Christlieb N, Frebel A, Norris JE, Honda S, Takada-Hidai M, Asplund M, Ando H, Ryan SG, Tsangarides S, Nomoto K, Fujimoto MY, Kajino T, Yoshii Y. Chemical abundance patterns of extremely metal-poor stars with [Fe/H]≲ -3.5 Proceedings of the International Astronomical Union. 1: 195-200. DOI: 10.1017/S1743921305005545 |
0.829 |
|
| 2005 |
Elliott LM, Ryan SG. Lithium deficient halo stars: abundance trends and enhanced rotation Proceedings of the International Astronomical Union. 1: 91-92. DOI: 10.1017/S1743921305005314 |
0.439 |
|
| 2005 |
Inoue S, Aoki W, Suzuki T, Kawanomoto S, García-Pérez A, Ryan S, Chiba M. $^6$Li in very metal-poor halo stars observed by Subaru/HDS and implications Proceedings of the International Astronomical Union. 1: 59-64. DOI: 10.1017/S1743921305005223 |
0.54 |
|
| 2005 |
Ryan SG. Lithium abundances in halo dwarfs Proceedings of the International Astronomical Union. 1: 23-27. DOI: 10.1017/S1743921305005168 |
0.417 |
|
| 2005 |
Ishimaru Y, Wanajo S, Aoki W, Ryan SG, Prantzos N. First enrichment of r-process elements in our Galaxy Nuclear Physics A. 758. DOI: 10.1016/J.Nuclphysa.2005.05.109 |
0.539 |
|
| 2005 |
Gallino R, Delaude D, Husti L, Cristallo S, Straniero O, Ryan S. Predictions of s-process Lead in low-metallicity stars compared with spectroscopic observations Nuclear Physics A. 758: 485-488. DOI: 10.1016/J.Nuclphysa.2005.05.089 |
0.549 |
|
| 2004 |
Aoki W, Norris JE, Ryan SG, Beers TC, Christlieb N, Tsanoarides S, Ando H. Oxygen overabundance in the extremely iron-poor star CS 29498-043 Astrophysical Journal. 608: 971-977. DOI: 10.1086/420686 |
0.741 |
|
| 2004 |
Honda S, Aoki W, Ando H, Izumiura H, Kajino T, Kambe E, Kawanomto S, Noguchi K, Okita K, Sadakane K, Sato B, Takada-Hidai M, Takeda Y, Watanabe E, Beers TC, ... ... Ryan SG, et al. Spectroscopic studies of extremely metal-poor stars with the subaru high dispersion spectrograph. I. Observational data Astrophysical Journal, Supplement Series. 152: 113-128. DOI: 10.1086/383201 |
0.754 |
|
| 2004 |
Christlieb N, Beers TC, Barklem PS, Bessell M, Hill V, Holmberg J, Korn AJ, Marsteller B, Mashonkina L, Qian YZ, Rossi S, Wasserburg GJ, Zickgraf FJ, Kratz KL, Nordström B, ... ... Ryan SG, et al. The Hamburg/ESO R-process Enhanced Star survey (HERES) I. Project description, and discovery of two stars with strong enhancements of neutron-capture elements Astronomy and Astrophysics. 428: 1027-1037. DOI: 10.1051/0004-6361:20041536 |
0.564 |
|
| 2004 |
Aoki W, Inoue S, Kawanomoto S, Ryan SG, Smith IM, Suzuki TK, Takada-Hidai M. A low upper-limit on the lithium isotope ratio in HD140283 Astronomy & Astrophysics. 428: 579-586. DOI: 10.1051/0004-6361:20041406 |
0.558 |
|
| 2003 |
Ishimaru Y, Wanajo S, Aoki W, Ryan SG. The Detection of Low Eu Abundances in Extremely Metal-poor Stars and the Origin of
r
-Process Elements The Astrophysical Journal. 600: L47-L50. DOI: 10.1086/381496 |
0.667 |
|
| 2003 |
Aoki W, Ryan SG, Iwamoto N, Beers TC, Norris JE, Ando H, Kajino T, Mathews GJ, Fujimoto MY. Europium isotope ratios in s-process element-enhanced metal-poor stars: A new probe of the 151Sm branching Astrophysical Journal. 592: L67-L70. DOI: 10.1086/377681 |
0.692 |
|
| 2003 |
Tsangarides SA, Arnone E, Ryan SG. Nucleosynthesis and early chemical evolution in galaxies Astronomy and Geophysics. 44: 2.28-2.29. DOI: 10.1046/J.1468-4004.2003.44228.X |
0.359 |
|
| 2003 |
Ryan SG, Smith IM. Intermediate-metallicity, high-velocity stars and Galactic chemical evolution Monthly Notices of the Royal Astronomical Society. 341: 199-212. DOI: 10.1046/J.1365-8711.2003.06412.X |
0.641 |
|
| 2003 |
Ryan SG. Observations of r- and s-process elements in population II stars Nuclear Physics A. 718: 317-324. DOI: 10.1016/S0375-9474(03)00733-4 |
0.497 |
|
| 2002 |
Aoki W, Norris JE, Ryan SG, Beers TC, Ando H. Subaru/HDS study of the extremely metal-poor star CS 29498-043: Abundance analysis details and comparison with other carbon-rich objects Publications of the Astronomical Society of Japan. 54: 933-949. DOI: 10.1093/Pasj/54.6.933 |
0.744 |
|
| 2002 |
Aoki W, Ryan SG, Norris JE, Beers TC, Ando H, Tsangarides S. A Subaru/high dispersion spectrograph study of lead (Pb) abundances in eight s-process element-rich, metal-poor stars Astrophysical Journal. 580: 1149-1158. DOI: 10.1086/343885 |
0.727 |
|
| 2002 |
Aoki W, Norris JE, Ryan SG, Beers TC, Ando H. 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 Astrophysical Journal. 576: L141-L144. DOI: 10.1086/343761 |
0.76 |
|
| 2002 |
Norris JE, Ryan SG, Beers TC, Aoki W, Ando H. Extremely metal-poor stars. IX. CS 22949-037 and the role of hypernovae Astrophysical Journal. 569: L107-L110. DOI: 10.1086/340665 |
0.744 |
|
| 2002 |
Ryan SG, Gregory SG, Kolb U, Beers TC, Kajino T. Rapid Rotation of Ultra–Li‐depleted Halo Stars and Their Association with Blue Stragglers The Astrophysical Journal. 571: 501-511. DOI: 10.1086/339939 |
0.533 |
|
| 2002 |
Aoki W, Norris JE, Ryan SG, Beers TC, Ando H. The chemical composition of carbon-rich, very metal poor stars: A new class of mildly carbon rich objects without excess of neutron-capture elements Astrophysical Journal. 567: 1166-1182. DOI: 10.1086/338756 |
0.698 |
|
| 2002 |
Ryan SG. Big Bang Nucleosynthesis, Population III, and Stellar Genetics in the Galactic Halo Publications of the Astronomical Society of Australia. 19: 238-245. DOI: 10.1071/As01067 |
0.522 |
|
| 2002 |
Ford A, Jeffries RD, Smalley B, Ryan SG, Aoki W, Kawanomoto S, James DJ, Barnes JR. Lithium 6104 Å in Population II stars Astronomy & Astrophysics. 393: 617-628. DOI: 10.1051/0004-6361:20021040 |
0.413 |
|
| 2001 |
Norris JE, Ryan SG, Beers TC. Extremely metal-poor stars. VIII. High-resolution, high signal-to-noise ratio analysis of five stars with [Fe/H] ≲ -3.5 Astrophysical Journal. 561: 1034-1059. DOI: 10.1086/323429 |
0.684 |
|
| 2001 |
Aoki W, Ryan SG, Norris JE, Beers TC, Ando H, Iwamoto N, Kajino T, Mathews GJ, Fujimoto MY. Neutron capture elements in s-process-rich, very metal-poor stars Astrophysical Journal. 561: 346-363. DOI: 10.1086/323230 |
0.726 |
|
| 2001 |
Ryan SG, Kajino T, Beers TC, Suzuki TK, Romano D, Matteucci F, Rosolankova K. Abundances and Evolution of Lithium in the Galactic Halo and Disk The Astrophysical Journal. 549: 55-71. DOI: 10.1086/319048 |
0.408 |
|
| 2001 |
Ryan SG, Beers TC, Kajino T, Rosolankova K. Ultra–Lithium‐deficient Halo Stars and Blue Stragglers: A Common Origin? The Astrophysical Journal. 547: 231-239. DOI: 10.1086/318338 |
0.559 |
|
| 2001 |
Ellison SL, Ryan SG, Prochaska JX. The first detection of cobalt in a damped Lyman alpha system Monthly Notices of the Royal Astronomical Society. 326: 628-636. DOI: 10.1046/J.1365-8711.2001.04622.X |
0.618 |
|
| 2001 |
Blake L, Ryan S, Norris J, Beers T. Neutron-capture elements in the Sr-rich, Ba-normal metal-poor giant CS22897-008 Nuclear Physics A. 688: 502-504. DOI: 10.1016/S0375-9474(01)00769-2 |
0.653 |
|
| 2001 |
Ryan S, Aoki W, Norris J, Beers T, Gallino R, Busso M, Ando H. Lead (Pb) in the C-rich, s-process rich, metal poor subgiant LP625-44 Nuclear Physics A. 688: 209-212. DOI: 10.1016/S0375-9474(01)00699-6 |
0.594 |
|
| 2000 |
Aoki W, Norris JE, Ryan SG, Beers TC, Ando H. Detection of Lead in the Carbon-rich, Very Metal-poor Star LP 625-44: A Strong Constraint on s-Process Nucleosynthesis at Low Metallicity. The Astrophysical Journal. 536: L97-L100. PMID 10859127 DOI: 10.1086/312740 |
0.742 |
|
| 2000 |
Ryan SG, Beers TC, Olive KA, Fields BD, Norris JE. Primordial Lithium and Big Bang Nucleosynthesis. The Astrophysical Journal. 530: L57-L60. PMID 10655164 DOI: 10.1086/312492 |
0.732 |
|
| 2000 |
Norris JE, Beers TC, Ryan SG. Extremely metal-poor stars. VII. The most metal-poor dwarf, CS 22876-032 Astrophysical Journal. 540: 456-467. DOI: 10.1086/309320 |
0.747 |
|
| 2000 |
Ryan SG. The host stars of extrasolar planets have normal lithium abundances Monthly Notices of the Royal Astronomical Society. 316: L35-L39. DOI: 10.1046/J.1365-8711.2000.03777.X |
0.564 |
|
| 2000 |
Ryan SG. 7Li in Metal-Poor Stars: The Spread of the Li Plateau Symposium - International Astronomical Union. 198: 249-258. DOI: 10.1017/S0074180900166689 |
0.576 |
|
| 1999 |
Norris JE, Ryan SG, Beers TC. A search for stars of very low metal abundance. III. UBV photometry of metal-weak candidates Astrophysical Journal, Supplement Series. 123: 639-686. DOI: 10.1086/313248 |
0.751 |
|
| 1999 |
Ryan SG, Norris JE, Beers TC. The Spite lithium plateau: Ultrathin but postprimordial Astrophysical Journal. 523: 654-677. DOI: 10.1086/307769 |
0.757 |
|
| 1999 |
Boesgaard AM, Deliyannis CP, King JR, Ryan SG, Vogt SS, Beers TC. Beryllium abundances in halo stars from keck/hires observations Astronomical Journal. 117: 1549-1562. DOI: 10.1086/300780 |
0.553 |
|
| 1999 |
Beers TC, Rossi S, Norris JE, Ryan SG, Shefler T. Estimation of stellar metal abundance. II. A recalibration of the Ca II K technique, and the autocorrelation function method Astronomical Journal. 117: 981-1009. DOI: 10.1086/300727 |
0.716 |
|
| 1998 |
Ryan SG, Norris JE, Beers TC. Extremely metal poor stars. VI. The heterogeneous class of lithium-depleted main-sequence turnoff dwarfs Astrophysical Journal. 506: 892-897. DOI: 10.1086/306288 |
0.785 |
|
| 1998 |
Ryan SG, Deliyannis CP. Processing of lithium in halo stars cooler than the spite plateau. III. Observations and abundance analysis Astrophysical Journal. 500: 398-410. DOI: 10.1086/305716 |
0.496 |
|
| 1998 |
Beers TC, Rossi S, Norris JE, Ryan SG, Molaro P, Rebolo R. The low metallicity tail of the halo metallicity distribution function Space Science Reviews. 84: 139-144. DOI: 10.1007/978-94-011-5116-0_13 |
0.763 |
|
| 1997 |
Dunkin SK, Barlow MJ, Ryan SG. High-resolution spectroscopy of Vega-like stars — II. Age indicators, activity and circumstellar gas Monthly Notices of the Royal Astronomical Society. 290: 165-185. DOI: 10.1093/Mnras/290.1.165 |
0.532 |
|
| 1997 |
Dunkin SK, Barlow MJ, Ryan SG. High-resolution spectroscopy of Vega-like stars -- I. Effective temperatures, gravities and photospheric abundances Monthly Notices of the Royal Astronomical Society. 286: 604-616. DOI: 10.1093/Mnras/286.3.604 |
0.46 |
|
| 1997 |
Norris JE, Ryan SG, Beers TC. Extremely metal-poor stars. The carbon-rich, neutron capture element-poor object CS 22957-027 Astrophysical Journal. 489: L169-L172. DOI: 10.1086/316787 |
0.745 |
|
| 1997 |
Deliyannis CP, Ryan SG. Keck observation of lithium in a cool halo dwarf common proper motion pair Astrophysical Journal. 480. DOI: 10.1086/310609 |
0.538 |
|
| 1997 |
Norris JE, Ryan SG, Beers TC. Extremely metal-poor stars. IV. The carbon-rich objects Astrophysical Journal. 488: 350-363. DOI: 10.1086/304695 |
0.717 |
|
| 1997 |
Duncan DK, Primas F, Rebull LM, Boesgaard AM, Deliyannis CP, Hobbs LM, King JR, Ryan SG. The evolution of galactic boron and the production site of the light elements Astrophysical Journal. 488: 338-349. DOI: 10.1086/304683 |
0.517 |
|
| 1997 |
Yoshii Y, Kajino T, Ryan SG. Evolution of the Light Elements and the Cosmic‐Ray Flux in the Galaxy The Astrophysical Journal. 485: 605-610. DOI: 10.1086/304475 |
0.565 |
|
| 1997 |
Norris JE, Ryan SG, Beers TC, Deliyannis CP. Extremely metal-poor stars. III. The lithium-depleted main-sequence turnoff dwarfs Astrophysical Journal. 485: 370-379. DOI: 10.1086/304390 |
0.742 |
|
| 1997 |
Beers TC, Ryan SG, Norris JE. High-resolution abundance determinations of extremely-metal-poor stars and galactic chemical evolution Nuclear Physics A. 621: 37C-40C. DOI: 10.1016/S0375-9474(97)00208-X |
0.731 |
|
| 1996 |
Norris JE, Ryan SG, Beers TC. Extremely metal-poor stars. I. spectroscopic data Astrophysical Journal, Supplement Series. 107: 391-421. DOI: 10.1086/192368 |
0.752 |
|
| 1996 |
Ryan SG, Norris JE, Beers TC. Extremely metal-poor stars. II. Elemental abundances and the early chemical enrichment of the galaxy Astrophysical Journal. 471: 254-278. DOI: 10.1086/177967 |
0.712 |
|
| 1996 |
Ryan SG, Beers TC, Deliyannis CP, Thorburn JA. Lithium Processing in Halo Dwarfs, and T eff, [Fe/H] Correlations on the Spite Plateau The Astrophysical Journal. 458: 543. DOI: 10.1086/176838 |
0.44 |
|
| 1995 |
Ryan SG, Deliyannis CP. Lithium in short-period tidally locked binaries: A test of rotationally induced mixing Astrophysical Journal. 453: 819-836. DOI: 10.1086/176444 |
0.575 |
|
| 1995 |
Ryan SG, Lambert DL. The Demise of the Metal Poor Disk?: Spectroscopic Iron Abundances The Astronomical Journal. 109: 2068. DOI: 10.1086/117432 |
0.414 |
|
| 1994 |
Deliyannis CP, King JR, Boesgaard AM, Ryan SG. Lithium in a short-period tidally locked binary of M67: Implications for stellar evolution, galactic lithium evolution, and cosmology Astrophysical Journal. 434. DOI: 10.1086/187577 |
0.423 |
|
| 1994 |
Deliyannis CP, Ryan SG, Beers TC, Thorburn JA. Detection of lithium in the cool halo dwarfs groombridge 1830 and HD 134439: Implications for internal stellar mixing and cosmology Astrophysical Journal. 425. DOI: 10.1086/187301 |
0.544 |
|
| 1994 |
Norris JE, Ryan SG, Stringfellow GS. Lithium abundances in the most metal-deficient stars The Astrophysical Journal. 423: 386. DOI: 10.1086/173815 |
0.721 |
|
| 1992 |
Ryan SG, Norris JE, Bessell MS, Deliyannis C. Evolution of beryllium abundances in the galactic halo The Astrophysical Journal. 388: 184. DOI: 10.1086/171141 |
0.721 |
|
| 1992 |
Ryan SG. Halo common proper motion stars - Subdwarf distance scale, halo binary fraction, and UBVRI colors The Astronomical Journal. 104: 1144. DOI: 10.1086/116303 |
0.485 |
|
| 1991 |
Norris JE, Ryan SG. Population studies. XI - The extended disk, halo configuration The Astrophysical Journal. 380: 403. DOI: 10.1086/170599 |
0.616 |
|
| 1991 |
Ryan SG, Norris JE, Bessell MS. Subdwarf studies. IV - Abundance ratios in extremely metal-deficient stars The Astronomical Journal. 102: 303. DOI: 10.1086/115878 |
0.742 |
|
| 1991 |
Ryan SG, Norris JE. Subdwarf Studies. III. The Halo Metallicity Distribution The Astronomical Journal. 101: 1865. DOI: 10.1086/115812 |
0.679 |
|
| 1991 |
Ryan SG, Norris JE. Subdwarf studies. II - Abundances and kinematics from medium resolution spectra. III - The halo metallicity distribution The Astronomical Journal. 101: 1835. DOI: 10.1086/115811 |
0.706 |
|
| 1990 |
Ryan SG, Bessell MS, Sutherland RS, Norris JE. Be-9 abundances in population II stars - Implications for light element nucleosynthesis The Astrophysical Journal. 348: L57. DOI: 10.1086/185630 |
0.691 |
|
| 1990 |
Ryan SG. Erratum - Subdwarf Studies - Part One - UBVRI Photometry of NLTT Stars The Astronomical Journal. 99: 1336. DOI: 10.1086/115421 |
0.474 |
|
| 1989 |
Norris JE, Ryan SG. Population studies - Evidence for accretion of the galactic halo The Astrophysical Journal. 336: L17. DOI: 10.1086/185351 |
0.643 |
|
| 1989 |
Norris JE, Ryan SG. Population studies. VII - On the use of UBV data for kinematically selected samples to determine the dependence of kinematics on abundance The Astrophysical Journal. 340: 739. DOI: 10.1086/167434 |
0.542 |
|
| 1989 |
Ryan SG. Subdwarf studies. I - UBVRI photometry of NLTT stars The Astronomical Journal. 98: 1693. DOI: 10.1086/115256 |
0.534 |
|
| 1987 |
Wright AE, Slee OB, Nelson GJ, Stewart RT, Jauncey DL, White GL, Vaughan AE, Lim J, Large MI, Bunton JD, Thompson K, Coates DW, Innis JL, Peters WL, Ryan SG, et al. The Australian Radio Star Survey Publications of the Astronomical Society of Australia. 7: 159-162. DOI: 10.1017/s132335800002213x |
0.373 |
|
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