Search Results - "NORRIS, E. J"

The lowest detected stellar Fe abundance: the halo star SMSS J160540.18−144323.1 by Nordlander, T, Bessell, M S, Da Costa, G S, Mackey, A D, Asplund, M, Casey, A R, Chiti, A, Ezzeddine, R, Frebel, A, Lind, K, Marino, A F, Murphy, S J, Norris, J E, Schmidt, B P, Yong, D

“…ABSTRACT We report the discovery of SMSS J160540.18−144323.1, a new ultra metal-poor halo star discovered with the SkyMapper telescope. We measure $\left[\rm…”
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The SkyMapper DR1.1 search for extremely metal-poor stars by Da Costa, G S, Bessell, M S, Mackey, A D, Nordlander, T, Asplund, M, Casey, A R, Frebel, A, Lind, K, Marino, A F, Murphy, S J, Norris, J E, Schmidt, B P, Yong, D

“…ABSTRACT We present and discuss the results of a search for extremely metal-poor stars based on photometry from data release DR1.1 of the SkyMapper imaging…”
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High-resolution spectroscopic follow-up of the most metal-poor candidates from SkyMapper DR1.1 by Yong, D, Da Costa, G S, Bessell, M S, Chiti, A, Frebel, A, Gao, X, Lind, K, Mackey, A D, Marino, A F, Murphy, S J, Nordlander, T, Asplund, M, Casey, A R, Kobayashi, C, Norris, J E, Schmidt, B P

“…ABSTRACT We present chemical abundances for 21 elements (from Li to Eu) in 150 metal-poor Galactic stars spanning −4.1 < [Fe/H] < −2.1. The targets were…”
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The origin of Segue 1 by Niederste-Ostholt, M., Belokurov, V., Evans, N. W., Gilmore, G., Wyse, R. F. G., Norris, J. E.

“…We apply the optimal filter technique to Sloan Digital Sky Survey photometry around Segue 1 and find that the outer parts of the cluster are distorted. There…”
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Origin of abundance inhomogeneity in globular clusters by Bekki, K., Campbell, S. W., Lattanzio, J. C., Norris, J. E.

“…We numerically investigate abundance properties of the Galactic globular clusters (GCs) by adopting a new ‘external pollution’ scenario. In this framework, GCs…”
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HE 1327–2326, an Unevolved Star with [Fe/H] < –5.0. I. A Comprehensive Abundance Analysis by Aoki, W, Frebel, A, Christlieb, N, Norris, J. E, Beers, T. C, Minezaki, T, Barklem, P. S, Honda, S, Takada-Hidai, M, Asplund, M, Ryan, S. G, Tsangarides, S, Eriksson, K, Steinhauer, A, Deliyannis, C. P, Nomoto, K, Fujimoto, M. Y, Ando, H, Yoshii, Y, Kajino, T

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Genetic diversity and population structure of castor (Ricinus communis L.) germplasm within the US collection assessed with EST-SSR markers by Wang, M L, Dzievit, M, Chen, Z, Morris, J B, Norris, J E, Barkley, N A, Tonnis, B, Pederson, G A, Yu, J

“…Castor is an important oilseed crop and although its oil is inedible, it has multiple industrial and pharmaceutical applications. The entire US castor…”
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A critique of the Spite Plateau and the astration of primordial lithium by Norris, J E, Yong, D, Frebel, A, Ryan, S G

“…ABSTRACT We investigate the distribution of the lithium abundances, A(Li), of metal-poor dwarf and subgiant stars within the limits 5500 K < Teff < 6700 K,…”
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AN ELEMENTAL ASSAY OF VERY, EXTREMELY, AND ULTRA-METAL-POOR STARS by Hansen, T, Hansen, C J, Christlieb, N, Beers, T C, Yong, D, Bessell, M S, Frebel, A, Perez, A E Garcia, Placco, V M, Norris, J E, Asplund, M

“…We present a high-resolution elemental-abundance analysis for a sample of 23 very metal-poor ([Fe/H] < -2.0) stars, 12 of which are extremely metal-poor…”
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Iron and s-elements abundance variations in NGC 5286: comparison with ‘anomalous' globular clusters and Milky Way satellites by Marino, A. F., Milone, A. P., Karakas, A. I., Casagrande, L., Yong, D., Shingles, L., Da Costa, G., Norris, J. E., Stetson, P. B., Lind, K., Asplund, M., Collet, R., Jerjen, H., Sbordone, L., Aparicio, A., Cassisi, S.

“…We present a high-resolution spectroscopic analysis of 62 red giants in the Milky Way globular cluster (GC) NGC 5286. We have determined abundances of…”
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Exploring the Galaxy’s halo and very metal-weak thick disc with SkyMapper and Gaia DR2 by Cordoni, G, Da Costa, G S, Yong, D, Mackey, A D, Marino, A F, Monty, S, Nordlander, T, Norris, J E, Asplund, M, Bessell, M S, Casey, A R, Frebel, A, Lind, K, Murphy, S J, Schmidt, B P, Gao, X D, Xylakis-Dornbusch, T, Amarsi, A M, Milone, A P

“…ABSTRACT In this work, we combine spectroscopic information from the SkyMapper survey for Extremely Metal-Poor stars and astrometry from Gaia DR2 to…”
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GLOBAL AND NONGLOBAL PARAMETERS OF HORIZONTAL-BRANCH MORPHOLOGY OF GLOBULAR CLUSTERS by Milone, A P, Marino, A F, Dotter, A, Norris, J E, Jerjen, H, Piotto, G, Cassisi, S, Bedin, L R, Blanco, A Recio, Sarajedini, A, Asplund, M, Monelli, M, Aparicio, A

“…The horizontal-branch (HB) morphology of globular clusters (GCs) is mainly determined by metallicity. However, the fact that GCs with almost the same…”
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An investigation of C, N, and Na abundances in red giant stars of the Sculptor dwarf spheroidal galaxy by Salgado, C, Da Costa, G S, Norris, J E, Yong, D

“…ABSTRACT The origin of the star-to-star abundance variations found for the light elements in Galactic globular clusters (GGCs) is not well understood, which is…”
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EXPLORING THE ORIGIN OF LITHIUM, CARBON, STRONTIUM, AND BARIUM WITH FOUR NEW ULTRA METAL-POOR STARS by Hansen, T, Hansen, C J, Christlieb, N, Yong, D, Bessell, M S, PEREZ, A E GARCIA, Beers, T C, PLACCO, V M, FREBEL, A, Norris, J E, Asplund, M

“…We present an elemental abundance analysis for four newly discovered ultra metal-poor stars from the Hamburg/ESO survey, with [Fe/H] [< or =, slant] -4. Based…”
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Plant essential oils synergize various pyrethroid insecticides and antagonize malathion in Aedes aegypti by Norris, E. J., Gross, A. D., Bartholomay, L. C., Coats, J. R.

“… Pyrethroid resistance is a significant threat to agricultural, urban and public health pest control activities. Because economic incentives for the…”
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Evidence of globular cluster abundance anomalies in the SMC intermediate-age cluster Kron 3 by Salgado, C, Da Costa, G S, Yong, D, Salinas, R, Norris, J E, Mackey, A D, Marino, A F, Milone, A P

“…ABSTRACT Using spectra obtained with the VLT/FORS2 and Gemini-S/GMOS-S instruments, we have investigated carbon, nitrogen, and sodium abundances in a sample of…”
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ACCURATE STELLAR KINEMATICS AT FAINT MAGNITUDES: APPLICATION TO THE BOÖTES I DWARF SPHEROIDAL GALAXY by Koposov, Sergey E., Gilmore, G., Walker, M. G., Belokurov, V., Evans, N. Wyn, Fellhauer, M., Gieren, W., Geisler, D., Monaco, L., Norris, J. E., Okamoto, S., Peñarrubia, J., Wilkinson, M., Wyse, R. F. G., Zucker, D. B.

“…We develop, implement, and characterize an enhanced data reduction approach which delivers precise, accurate, radial velocities from moderate resolution…”
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Gaia and Hubble Unveil the Kinematics of Stellar Populations in the Type II Globular Clusters ω Centauri and M22 by Cordoni, G., Milone, A. P., Marino, A. F., Da Costa, G. S., Dondoglio, E., Jerjen, H., Lagioia, E. P., Mastrobuono-Battisti, A., Norris, J. E., Tailo, M., Yong, D.

“…Abstract The origin of multiple stellar populations in globular clusters (GCs) is one of the greatest mysteries of modern stellar astrophysics. N -body…”
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Essential oils enhance the toxicity of permethrin against Aedes aegypti and Anopheles gambiae by GROSS, A. D., NORRIS, E. J., KIMBER, M. J., BARTHOLOMAY, L. C., COATS, J. R.

“…Insecticide resistance and growing public concern over the safety and environmental impacts of some conventional insecticides have resulted in the need to…”
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Scl-1013644: a CEMP-s star in the Sculptor dwarf spheroidal galaxy by Salgado, C., Da Costa, G. S., Yong, D., Norris, J. E.

“…Recent studies of the Milky Way and its satellites have paid special attention to the importance of carbon-enhanced metal-poor (CEMP) stars due to their…”
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