Professor John Norris
Areas of expertise
- Stellar Astronomy And Planetary Systems 020110
- Galactic Astronomy 020104
Publications
- Chiti, A, Frebel, A, Ji, A et al. 2023, 'Detailed Chemical Abundances of Stars in the Outskirts of the Tucana II Ultrafaint Dwarf Galaxy', The Astronomical Journal, vol. 165, no. 2, p. 18.
- Norris, J, Yong, D, Frebel, A et al. 2023, 'A critique of the Spite Plateau and the astration of primordial lithium', Monthly Notices of the Royal Astronomical Society, vol. 522, no. 1, pp. 1358-1376.
- Salgado Escalona, C, Da Costa, G, Yong, D et al. 2022, 'Evidence of globular cluster abundance anomalies in the SMC intermediate-age cluster Kron 3', Monthly Notices of the Royal Astronomical Society, vol. 515, no. 2, pp. 2511-2528.
- Cordoni, G, Da Costa, G, Yong, D et al. 2021, 'Exploring the Galaxy's halo and very metal-weak thick disc with SkyMapper and Gaia DR2', Monthly Notices of the Royal Astronomical Society, vol. 503, no. 2, pp. 2539-2561.
- Limberg, G, Rossi, S, Beers, T et al. 2021, 'Dynamically Tagged Groups of Very Metal-poor Halo Stars from the HK and Hamburg/ESO Surveys', The Astrophysical Journal, vol. 907, no. 1.
- Chiti, A, Frebel, A, Simon, J et al. 2021, 'An extended halo around an ancient dwarf galaxy', Nature Astronomy, vol. 5, pp. 392-400.
- Yong, D, Da Costa, G, Bessell, M et al. 2021, 'High resolution spectroscopic follow-up of the most metal-poor candidates from SkyMapper DR1.1', Monthly Notices of the Royal Astronomical Society, vol. 507, no. 3, pp. 4102-4119.
- Chiti, A, Frebel, A, Jerjen, H et al. 2020, 'Stellar Metallicities from SkyMapper Photometry I: A Study of the Tucana II Ultra-faint Dwarf Galaxy', The Astrophysical Journal, vol. 891, no. 1, pp. 1-18.
- Cordoni, G, Milone, A, Marino, A et al. 2020, 'Gaia and Hubble Unveil the Kinematics of Stellar Populations in the Type II Globular Clusters Omega Centauri and M22', The Astrophysical Journal, vol. 898, no. 2, p.147.
- Norris, J & Yong, D 2019, 'The Most Metal-poor Stars. V. the CEMP-no Stars in 3D and Non-LTE', The Astrophysical Journal, vol. 879, no. 37, pp. 1-20.
- Salgado Escalona, C, Da Costa, G, Norris, J et al. 2019, 'An investigation of C, N, and Na abundances in red giant stars of the Sculptor dwarf spheroidal galaxy', Monthly Notices of the Royal Astronomical Society, vol. 484, no. 3, pp. 3093-3118.
- Marino, A, Da Costa, G, Casey, A et al. 2019, 'Keck HIRES spectroscopy of SkyMapper commissioning survey candidate extremely metal-poor stars', Monthly Notices of the Royal Astronomical Society, vol. 485, no. 4, pp. 5153-5167.
- Nordlander, T, Bessell, M, Da Costa, G et al. 2019, 'The lowest detected stellar Fe abundance: the halo star SMSS J160540.18-144323.1', Monthly Notices of the Royal Astronomical Society, vol. 488, no. 1, pp. L109-L113.
- Da Costa, G, Bessell, M, Mackey, D et al. 2019, 'The SkyMapper DR1.1 search for extremely metal-poor stars', Monthly Notices of the Royal Astronomical Society, vol. 489, no. 4, pp. 5900-5918.
- Chiti, A, Frebel, A, Ji, A et al. 2018, 'Chemical Abundances of New Member Stars in the Tucana II Dwarf Galaxy', The Astrophysical Journal, vol. 857, no. 74, pp. 13pp.
- Chiti, A, Frebel, A, Ji, A et al. 2018, 'Erratum: Chemical Abundances of New Member Stars in the Tucana II Dwarf Galaxy (vol 857, 74, 2018)', The Astrophysical Journal, vol. 860, no. 1, pp. -.
- Chiti, A, Frebel, A, Ji, A et al 2018, 'Chemical Abundances of New Member Stars in the Tucana II Dwarf Galaxy', The Astrophysical Journal, 857, 74 (13pp).
- Norris, J 2017, 'Very Metal-Poor Stars and the Early Universe', International Astronomical Union. Proceedings, vol. 13, no. S334, pp. 3-10.
- Beers, T, Placco, V, Carollo, D et al 2017, 'BRIGHT METAL-POOR STARS from the HAMBURG/ESO SURVEY. II. A CHEMODYNAMICAL ANALYSIS', Astrophysical Journal, The, vol. 835, no. 81 (22pp).
- Beers, T, Placco, V, Carollo, D et al 2017, 'BRIGHT METAL-POOR STARS from the HAMBURG/ESO SURVEY. II. A CHEMODYNAMICAL ANALYSIS', Astrophysical Journal, The, vol. 835, no. 81 (22pp).
- Norris, J, Yong, D, Venn, K et al 2017, 'The Populations of Carina. I. Decoding the Color-Magnitude Diagram', Astrophysical Journal Supplement Series, vol. 230, 27 (19pp).
- Norris, J, Yong, D, Venn, K et al 2017, 'The Populations of Carina. II. Chemical Enrichment', Astrophysical Journal Supplement Series, vol. 230, 28 (40pp).
- Yong, D, Norris, J, Da Costa, G et al 2017, 'A Chemical Signature from Fast-rotating Low-metallicity Massive Stars: ROA 276 in omega Centauri', Astrophysical Journal, The, vol. 837, 176 (8 pp).
- Yong, D, Norris, J, Da Costa, G et al 2017, 'A Chemical Signature from Fast-rotating Low-metallicity Massive Stars: ROA 276 in omega Centauri', Astrophysical Journal, The, vol. 837, no. 2, pp. 1-8.
- Yong, D, Da Costa, G & Norris, J 2016, 'Confirming the intrinsic abundance spread in the globular cluster NGC 6273 (M19) with calcium triplet spectroscopy', Monthly Notices of the Royal Astronomical Society, vol. 460, no. 2, pp. 1846-1853.
- Venn, K, Jablonka, P, Hill, V et al. 2016, 'Chemical Abundances of Metal-poor stars in Dwarf Galaxies', International Astronomical Union IAUS 317: The General Assembly of Galaxy Halos: Structure, Origin and Evolution, ed. Angela Bragaglia, Magda Arnaboldi, Marina Rejkuba, Donatella Romano, Cambridge University Press, United Kingdom, pp. 159-163.
- Frebel, A, Norris, J, Gilmore, G et al 2016, 'THE CHEMICAL EVOLUTION of the BOOTES i ULTRA-FAINT DWARF GALAXY', Astrophysical Journal, The, vol. 826, 110 (14pp).
- Salgardo, C., Da Costa, G, Yong, D et al 2016, 'Scl-1013644: A CEMP-s star in the Sculptor dwarf spheroidal galaxy', Monthly Notices of the Royal Astronomical Society, vol. 463, no. 1, pp. 598-603.
- Yong, D, Grundahl, F, Melendez, J et al 2015, 'Precision Chemical Abundance Measurements', International Astronomical Union. Proceedings, vol. 10, no. H16, pp. 237-238.
- Yong, D, Grundahl, F & Norris, J 2015, 'CNO abundances in the globular clusters NGC 1851 and NGC 6752', Monthly Notices of the Royal Astronomical Society, vol. 446, no. 4, pp. 3319-3329.
- Bessell, M, Collet, R, Keller, S et al 2015, 'Nucleosynthesis in a primordial supernova: Carbon and oxygen abundances in SMSS J031300.36-670839.3', Astrophysical Journal Letters, vol. 806, L16.
- Frebel, A & Norris, J 2015, 'Near-field cosmology with extremely metal-poor stars', Annual Review of Astronomy and Astrophysics, vol. 53, pp. 631-688.
- Hansen, T, Hansen, C, Christlieb, N et al 2015, 'AN ELEMENTAL ASSAY of VERY, EXTREMELY, and ULTRA-METAL-POOR STARS', Astrophysical Journal, The, vol. 807, 173, (17pp)
- Jacobson, H, Keller, S, Frebel, A et al 2015, 'HIGH-RESOLUTION SPECTROSCOPIC STUDY of EXTREMELY METAL-POOR STAR CANDIDATES from the SKYMAPPER SURVEY', Astrophysical Journal, The, vol. 807, 171 (20pp).
- Marino, A, Milone, A, Karakas, A et al 2015, 'Iron and s-elements abundance variations in NGC 5286: Comparison with 'anomalous' globular clusters and Milky Way satellites', Monthly Notices of the Royal Astronomical Society, vol. 450, pp. 815-845.
- Jacobson, H, Asplund, M, Bessell, M et al. 2014, 'Detailed element abundances of SkyMapper EMP stars: first results of the high-resolution spectroscopic follow up', Memorie Della Societa Astronomica Italiana, vol. 85, pp. 227-231.
- Marino, A, Milone, A, Yong, D et al. 2014, 'The halo plus cluster system of the Galactic globular cluster NGC 1851(a similar to...)', Monthly Notices of the Royal Astronomical Society, vol. 442, no. 4, pp. 3044-3064.
- Yong, D, Alves Brito, A, Da Costa, G et al. 2014, 'Chemical abundances in bright giants of the globular cluster M62 (NGC 6266)(star)', Monthly Notices of the Royal Astronomical Society, vol. 439, no. 3, pp. 2638-2650.
- Keller, S, Bessell, M, Frebel, A et al. 2014, 'A single low-energy, iron-poor supernova as the source of metals in the star SMSS J031300.36-670839.3', Nature, vol. 506, no. 7489, pp. 463-466.
- Yong, D, Roederer, I, Grundahl, F et al. 2014, 'Iron and neutron-capture element abundance variations in the globular cluster M2 (NGC 7089)', Monthly Notices of the Royal Astronomical Society, vol. 441, no. 4, pp. 3396-3416.
- Beers, T, Norris, J, Placco, V et al 2014, 'Population studies. XIII. A new analysis of the Bidelman-Macconnell "weak-metal" stars - Confirmation of metal-poor stars in the thick disk of the galaxy', Astrophysical Journal, The, vol. 794, 58 (19pp).
- Hansen, T, Hansen, C, Christlieb, N et al 2014, 'Exploring the origin of lithium, carbon, strontium, and barium with four new ultra metal-poor stars', Astrophysical Journal, The, vol. 787, 162 (9pp).
- Mack III, C, Schuler, S, Stassun, K et al 2014, 'Detailed abundances of planet-hosting wide binaries. I. Did planet formation imprint chemical signatures in the atmospheres of HD 20782/81?', Astrophysical Journal, The, vol. 787, 98, (8 pp)
- Milone, A, Marino, A, Dotter, A et al 2014, 'Global and nonglobal parameters of horizontal-branch morphology of globular clusters', Astrophysical Journal, The, vol. 785, 21 (17pp)
- Gilmore, G, Koposov, S, Norris, J et al 2013, 'Bootes-I, Segue 1, the Orphan Stream and CEMP-no Stars: Extreme Systems Quantifying Feedback and Chemical Evolution in the Oldest and Smallest Galaxies', The Messenger, vol. 151, no. March 2013, pp. 25-28.
- Frebel, A & Norris, J 2013, 'Metal-Poor Stars and the Chemical Enrichment of the Universe', in Terry D. Oswalt, Gerard Gilmore (ed.), Planets, Stars and Stellar Systems, Springer Netherlands, Netherlands, pp. 55-114.
- Da Costa, G, Norris, J & Yong, D 2013, 'Magnesium isotope ratios in omega Centauri red giants', Astrophysical Journal, The, vol. 769, 8 (15pp).
- Frebel, A, Lunnan, R, Casey, A et al 2013, 'The 300 km s-1 stellar stream near Segue 1: Insights from high-resolution spectroscopy of its brightest star', Astrophysical Journal, The, vol. 771, 39 (12pp).
- Yong, D, Melendez, J, Grundahl, F et al 2013, 'High precision differential abundance measurements in globular clusters: Chemical inhomogeneities in NGC 6752', Monthly Notices of the Royal Astronomical Society, vol. 434, 3542-3565.
- Yong, D, Norris, J, Bessell, M et al 2013, 'The most metal-poor stars. III. the metallicity distribution function and carbon-enhanced metal-poor fraction', Astrophysical Journal, The, vol. 762, 27 (11pp)
- Norris, J 2012, 'The Galactic halo: Stellar populations and their chemical properties', International Astronomical Union. Proceedings, vol. 10, no. H16, pp. 280-281.
- Marino, A, Sneden, C, Kraft, R et al. 2011, 'The two metallicity groups of the globular cluster M22: a chemical perspective', Astronomy and Astrophysics, vol. 532.
- Hosford, A, Garcia Perez, A, Collet, R et al 2010, 'Lithium abundances of halo dwarfs based on excitation temperatures. II. Non-local thermodynamic equilibrium', Astronomy and Astrophysics, vol. 511, A47.
- Yong, D, Melendez, J, Cunha, K et al. 2009, 'Chemical abundances in tidally disrupted globular clusters', Star clusters: basic galactic building blocks throughout time and space, ed. Richard de Grijs, Jacques R D Lepine, Cambridge University Press, Cambridge, pp. 157-160.
- Krugler, J, Beers, T, Lee, Y et al 2008, 'Revised parameter estimates for the most metal-poor candidates in SDSS-I and SEGUE', First Stars III, ed. Brian W. O'Shea , Alexander Heger and Tom Abel, American Institute of Physics (AIP), California USA, pp. 151-153.
- Christlieb, N, Korn, A, Eriksson, K et al. 2008, 'The giants stars HE 0107-5240 and HE 0557-4840 and new searches for metal-poor stars', First Stars III, ed. Brian W. O'Shea , Alexander Heger and Tom Abel, American Institute of Physics (AIP), California USA, pp. 109-112.
- Garcia Perez, A, Christlieb, N, Ryan, S et al. 2008, 'A new sample of extremely/ultra metal-poor stars', Physica Scripta, vol. 133, no. 1, p. 014036.
- Jayaraman, A, Gilmore, G, Wyse, R et al 2013, 'A 10 000 star spectroscopic survey of the thick disc-halo interface: Phase-space sub-structure in the thick disc', Monthly Notices of the Royal Astronomical Society, vol. 431, 930-953.
- Gilmore, G, Norris, J, Monaco, L et al 2013, 'Elemental abundances and their implications for the chemical enrichment of the Bootes I ultrafaint galaxy', Astrophysical Journal, The, vol. 763, 61 (20pp).
- Norris, J, Yong, D, Bessell, M et al 2013, 'The most metal-poor stars. IV. The two populations with [Fe/H] < -3.0', Astrophysical Journal, The, vol. 762, 28, (19pp).
- Yong, D, Norris, J, Bessell, M et al 2013, 'The most metal-poor stars. II. Chemical abundances of 190 metal-poor stars including 10 new stars with [Fe/H] < -3.5', Astrophysical Journal, The, vol. 762, 26 (49pp).
- Norris, J, Bessell, M, Yong, D et al 2013, 'The most metal-poor stars. I. Discovery, data, and atmospheric parameters', Astrophysical Journal, The, vol. 762, 25 (16pp).
- Norris, J, Christlieb, N, Bessell, M et al 2012, 'The oxygen abundance of the ultra-metal-poor star HE 0557-4840', Astrophysical Journal, The, vol. 753, 150-156.
- Beers, T, Carollo, D, Ivezic, Z et al 2012, 'The case for the dual halo of the Milky Way', Astrophysical Journal, The, vol. 746, 34 (23pp).
- Carollo, D, Beers, T, Bovy, J et al 2012, 'Carbon-enhanced metal-poor stars in the inner and outer halo components of the Milky Way', Astrophysical Journal, The, vol. 744, 195-216
- Norris, J 2011, 'ASTROPHYSICS A hint of normality at last?', Nature, vol. 477, no. 7362, pp. 37-38.
- Marino, A.F., Sneden, C., Kraft, R.P., Wallerstein, G., Norris, J.E., Da Costa, G.S., et al. 2011, 'The two metallicity groups of the globular cluster M 22: A chemical perspective', Astronomy & Astrophysics, vol. 532, id. A8.
- Norris, J 2011, 'Accurate stellar kinematics at faint magnitudes: Application to the Boötes i dwarf spheroidal galaxy', Astrophysical Journal, The, vol. 736, 146-162
- Norris, J, Wyse, R, Gilmore, G et al. 2010, 'Chemical enrichment in the faintest galaxies: The carbon and iron abundance spreads in the Bootes I dwarf spheroidal galaxy and the Segue 1 system', The Astrophysical Journal, vol. 723, no. 2, pp. 1632-1650.
- Norris, J, Gilmore, G, Wyse, R et al 2010, 'An extremely carbon-rich, extremely metal-poor star in the Segue 1 system', Astrophysical Journal, The, vol. 722, no. 1 PART 2, pp. L104
- Carollo, D, Beers, T, Chiba, M et al. 2010, 'Structure and kinematics of the stellar halos and thick disks of the milky way based on calibration stars from sloan digital sky survey DR7', The Astrophysical Journal, vol. 712, no. 1, pp. 692-727.
- Li, H, Christlieb, N, Schorck, T et al. 2010, 'The stellar content of the Hamburg/ESO survey: VI. Metallicity distribution of main-sequence turnoff stars in the Galactic halo', Astronomy and Astrophysics, vol. 521, pp. A10.
- Bond, N, Ivezic, Z, Sesar, B et al. 2010, 'The milky way tomography with SDSS. III. Stellar kinematics', The Astrophysical Journal, vol. 716, no. 1, pp. 1-29.
- Stanford, L, Da Costa, G & Norris, J 2010, 'Abundances of the star ROA 276 in omega Cen', Memorie Della Societa Astronomica Italiana, vol. 81, pp. 1090-1094.
- Hosford, A, Garcia Perez, A, Collet, R et al. 2010, 'Lithium abundances of halo dwarfs based on excitation temperatures. II. Non-local thermodynamic equilibrium', Astronomy and Astrophysics, vol. 511, no. 1, pp. A47.
- Norris, J, Yong, D, Gilmore, G et al 2010, 'Boo-1137 - An extremely metal-poor star in the ultra-faint dwarf spheroidal galaxy Bootes I', Astrophysical Journal, The, vol. 711, no. 1, pp. 350-360.
- Stanford, L, Da Costa, G & Norris, J 2010, 'Abundances of C, N, Sr, and Ba on the Red Giant Branch of omega Centauri', Astrophysical Journal, The, vol. 714, no. 2, pp. 1001-1014.
- Niederste-Ostholt, M, Belokurov, V, Evans, N et al. 2009, 'The origin of Segue 1', Monthly Notices of the Royal Astronomical Society, vol. 398, no. 4, pp. 1771-1781.
- Aoki, W, Barklem, P, Beers, T et al. 2009, 'Lithium Abundances of Extremely Metal-Poor Turnoff Stars', The Astrophysical Journal, vol. 698, no. 2, pp. 1803-1812.
- Hosford, A, Ryan, S, Garcia Perez, A et al. 2009, 'Lithium abundances of halo dwarfs based on excitation temperature. I. Local thermodynamic equilibrium', Astronomy and Astrophysics, vol. 493, no. 2, pp. 601-612.
- Starkenburg, E, Helmi, A, Morrison, H et al. 2009, 'Mapping the Galactic Halo. VIII. Quantifying Substructure', The Astrophysical Journal, vol. 698, no. 1, pp. 567-579.
- Yong, D, Grundahl, F, D'Antona, F et al 2009, 'A Large C+N+O Abundance Spread in Giant Stars of the Globular Cluster NGC 1851', The Astrophysical Journal, vol. 695, no. 1, pp. L62-L66.
- Yanny, B, Rockosi, C, Newberg, H et al. 2009, 'SEGUE: A Spectroscopic Survey of 240,000 Stars with g = 14-20', The Astronomical Journal, vol. 137, no. 5, pp. 4377-4399.
- Schorck, T, Christlieb, N, Cohen, J et al. 2009, 'The stellar content of the Hamburg/ESO survey. V. The metallicity distribution function of the Galactic halo', Astronomy and Astrophysics, vol. 507, no. 2, pp. 817-832.
- Morrison, H, Helmi, A, Sun, J et al. 2009, 'Fashionably Late? Building Up The Milky Way's Inner Halo', The Astrophysical Journal, vol. 694, no. 1, pp. 130-143.
- Ivezic, Z, Sesar, B, Juric, M et al. 2008, 'The Milky Way Tomography with SDSS. II. Stellar Metallicity', The Astrophysical Journal, vol. 684, pp. 287-325.
- Lee, Y, Beers, T, Sivarani, T et al. 2008, 'The Segue Stellar Parameter Pipeline. I. Description and Comparison of Individual Methods', The Astronomical Journal, vol. 136, no. Nov, pp. 2022-2049.
- Norris, J, Gilmore, G, Wyse, R et al. 2008, 'The Abundance Spread in the Bootes I Dwarf Spheroidal Galaxy', The Astrophysical Journal, vol. 689, no. 2 PART 2, pp. L113-L116.
- Garcia Perez, A, Christlieb, N, Ryan, S et al. 2008, 'A new sample of extremely/ultra metal-poor stars', A Stellar Journey: A symposium in Celebration of Bengt Gustafsson's 65th Birthday, IOP Publishing, UK, p. 014036.
- Lee, Y, Beers, T, Sivarani, T et al. 2008, 'The Segue Stellar Parameter Pipeline. II. Validation with Galactic Globular and Open Clusters', The Astronomical Journal, vol. 136, no. Nov, pp. 2050-2069.
- Yong, D, Melendez, J, Cunha, K et al 2008, 'Chemical Abundances in Giants Stars of the Tidally Disrupted Globular Cluster NGC 6712 from High-resolution Infrared Spectroscopy', The Astrophysical Journal, vol. 689, pp. 1020-1030.
- Aoki, W, Beers, T, Sivarani, T et al. 2008, 'Carbon-Enhanced Metal-Poor Stars. III. Main-Sequence Turnoff Stars from the SDSS SEGUE Sample', The Astrophysical Journal, vol. 678, no. May, pp. 1351-1371.
- Carollo, D, Beers, T, Lee, Y et al. 2007, 'Two stellar components in the halo of the Milky Way', Nature, vol. 450, no. 7172, pp. 1020-5.
- Stanford, L, Da Costa, G, Norris, J et al. 2007, 'Abundances on the Main Sequence of ω Centauri', The Astrophysical Journal, vol. 667, no. 2, pp. 911-929.
- Aoki, W, Beers, T, Christlieb, N et al. 2007, 'Carbon-enhanced Metal-poor Stars. I. Chemical Compositions of 26 Stars', The Astrophysical Journal, vol. 655, no. 1, pp. 492-521.
- Kepley, A, Morrison, H, Helmi, A et al. 2007, 'Halo Star Streams in the Solar Neighborhood', The Astronomical Journal, vol. 134, no. 4, pp. 1579-1595.
- Re Fiorentin, P, Bailer-Jones, C, Lee, Y et al. 2007, 'Estimation of stellar atmospheric parameters from SDSS/SEGUE spectra', Astronomy and Astrophysics, vol. 467, no. 3, pp. 1373-1387.
- Aoki, W, Honda, S, Beers, T et al. 2007, 'Spectroscopic Studies of Extremely Metal-poor Stars with the Subaru High-Dispersion Spectrograph. IV. The α-Element-Enhanced Metal-poor Star BS 16934-002', The Astrophysical Journal, vol. 660, no. 1, pp. 747-761.
- Frebel, A, Norris, J, Aoki, W et al. 2007, 'Chemical Abundance Analysis of the Extremely Metal-poor Star HE 1300+0157', The Astrophysical Journal, vol. 658, no. 1, pp. 534-552.
- Bekki, K, Campbell, S, Lattanzio, J et al. 2007, 'Origin of abundance inhomogeneity in globular clusters', Monthly Notices of the Royal Astronomical Society, vol. 377, no. 1, pp. 335-351.
- Frebel, A, Christlieb, N, Norris, J et al. 2007, 'Discovery of HE 1523-0901, a Strongly r-Process-enhanced Metal-poor Star with Detected Uranium', The Astrophysical Journal, vol. 660, no. 2, pp. L117-L120.
- Norris, J, Christlieb, N, Korn, A et al. 2007, 'HE 0557-4840: Ultra-Metal-Poor and Carbon-Rich', The Astrophysical Journal, vol. 670, no. November 20, pp. 774-788.
- Battaglia, G, Helmi, A, Morrison, H et al. 2006, 'Erratum: The radial velocity dispersion profile of the Galactic halo: constraining the density profile of the dark halo of the Milky Way', Monthly Notices of the Royal Astronomical Society, vol. 370, pp. 1055-1056.
- Aoki, W, Frebel, A, Christlieb, N et al. 2006, 'HE 1327-2326, An Unevolved Star with [Fe/H] < -5.0. I. A Comprehensive Abundance Analysis', The Astrophysical Journal, vol. 639, pp. 897-917.
- Wyse, R, Gilmore, G, Norris, J et al. 2006, 'Further Evidence of a Merger Origin for the Thick Disk: Galactic Stars along Lines of Sight to Dwarf Spheroidal Galaxies', The Astrophysical Journal, vol. 639, pp. L13-L16.
- Stanford, L, Da Costa, G, Norris, J et al. 2006, 'The Age and Metallicity Relation of Omega Centauri', The Astrophysical Journal, vol. 647, pp. 1075-1092.
- Aoki, W, Bisterzo, S, Gallino, R et al. 2006, 'Carbon-Enhanced Metal-Poor Stars: Osmium and Iridium Abundances in the Neutron-Capture-Enhanced Subgiants CS 31062-050 and LP 625-44', The Astrophysical Journal, vol. 650, pp. L127-L130.
- Goswami, A, Aoki, W, Beers, T et al. 2006, 'A high-resolution spectral analysis of three carbon-enhanced metal-poor stars', Monthly Notices of the Royal Astronomical Society, vol. 372, pp. 343-356.
- Stanford, L, Da Costa, G, Norris, J et al. 2006, 'A Sr-Rich Star on the Main Sequence of omega Centauri', The Astrophysical Journal, vol. 653, pp. L117-L120.
- Frebel, A, Christlieb, N, Norris, J et al. 2006, 'The Oxygen Abundance of HE 1327-2326', The Astrophysical Journal, vol. 638, pp. L17-20.
- Frebel, A, Christlieb, N, Norris, J et al. 2006, 'Bright Metal-poor Stars from the Hamburg/ESO Survey. I. Selection and Follow-up Observations from 329 Fields', The Astrophysical Journal, vol. 652, pp. 1585-1603.
- Bekki, K & Norris, J 2006, 'The Origin of the Double Main Sequence in omega Centauri: Helium Enrichment Due to Gas Fueling from its Ancient Host Galaxy?', Astrophysical Journal, The, vol. 637, pp. L109-L112.
- Frebel, A, Aoki, W, Christlieb, N et al. 2005, 'Nucleosynthetic signatures of the first stars', Nature, vol. 434, pp. 871-873.
- Battaglia, G, Helmi, A, Morrison, H et al. 2005, 'The radial velocity dispersion profile of the Galactic halo: constraining the density profile of the dark halo of the Milky Way', Monthly Notices of the Royal Astronomical Society, vol. 364, pp. 433-442.
- Arnone, E, Ryan, S, Argast, D et al. 2005, 'Mg abundances in metal-poor halo stars as a tracer of early Galactic mixing', Astronomy and Astrophysics, vol. 430, pp. 507-522.
- Aoki, W, Honda, S, Beers, T et al. 2005, 'Spectroscopic studies of very metal-poor stars with the Subaru High Dispersion Spectrograph. III. Light neutron-capture elements', The Astrophysical Journal, vol. 632, no. 1 I, pp. 611-637.
- Beers, T, Christlieb, N, Norris, J et al. 2005, 'The Metallicity Distribution Function of the Halo of the Milky Way', in Vanessa Hill, Patrick Francois & Francesca Primas (ed.), From Lithium to Uranium (S228), Cambridge University Press, Cambridge, pp. 175-184.
- Ryan, S, Aoki, W, Norris, J et al. 2005, 'The origins of two classes of carbon-enhanced, metal-poor stars', The Astrophysical Journal, vol. 635, pp. 349-354.
- Clewley, L, Warren, S, Hewett, P et al. 2005, 'Distant field blue horizontal branch stars - III. Identification of a probable outer halo stream at Galactocentric distance r = 70kpc', Monthly Notices of the Royal Astronomical Society, vol. 362, pp. 349-360.
- Burstein, D, Li, Y, Freeman, K et al. 2004, 'Globular Cluster and Galaxy formation: M31, The Milky Way, and Implications for Globular Cluster Systems of Spiral Galaxies', The Astrophysical Journal, vol. 614, pp. 158-166.
- Norris, J 2004, 'Extremely Metal-Poor Stars', Origin and Evolution of the Elements, ed. Andrew McWilliam & Michael Rauch, Cambridge University Press, United Kingdom, pp. 138-153.
- Norris, J 2004, 'The Helium Abundances of &omega Centauri', The Astrophysical Journal, vol. 612, pp. L25-L28.
- Aoki, W, Norris, J, Ryan, S et al. 2004, 'Oxygen Overabundance in the Extremely Iron-Poor star CS 29498-043', The Astrophysical Journal, vol. 608, pp. 971-977.
- Honda, S, Aoki, W, Anderson, W et al. 2004, 'Spectroscopic Studies of Extremely Metal-Poor Stars with the SUBARU High Dispersion Spectrograph I. Observational Data', The Astrophysical Journal, vol. 152, pp. 113-128.
- Clewley, L, Warren, S, Hewett, P et al 2004, 'Distant field blue horizontal branch stars and the mass of the Galaxy - II. Photometry and the spectroscopy of UKST candidates 16<B, Monthly Notices of the Royal Astronomical Society, vol. 352, pp. 285-298.
- Morrison, H, Norris, J, Mateo, M et al. 2003, 'Mapping the Galactic Halo. VI. Spectroscopic Measures of Luminosity and Metallicity', The Astronomical Journal, vol. 125, pp. 2502-2520.
- Aoki, W, Ryan, S, Iwamoto, N et al. 2003, 'Europium Isotope Ratios in s-Process Element-enhanced Metal-poor Stars: A new probe of the 151 Sm branching', The Astrophysical Journal, vol. 592, no. 2, pp. L67-L70.
- Clewley, L, Warren, S, Hewett, P et al. 2002, 'Distant Field Blue Horizontal Branch Stars and the Mass of the Galaxy I: Classification of halo A-type stars', Monthly Notices of the Royal Astronomical Society, vol. 337, pp. 87-97.
- Aoki, W, Norris, J, Ryan, S et al. 2002, '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', The Astrophysical Journal, vol. 576, pp. L141-L144.
- Aoki, W, Norris, J, Ryan, S et al. 2002, 'The Chemical Composition of Carbon-rich, Very Metal Poor Stars: A New Class of Mildly Carbon Rich Objects Without Excess of Neutron-capture Elements', The Astrophysical Journal, vol. 567.
- Norris, J, Ryan, S, Beers, T et al. 2002, 'Extremely Metal-poor Stars. IX. CS 22949-037 and the Role of Hypernovae', The Astrophysical Journal, vol. 569, pp. L107-L110.
- Aoki, W, Ryan, S, Norris, J et al. 2002, 'A Subaru/High Dispersion Spectrograph Study of Lead (Pb) Abundances in Eight s-Process Element-Rich, Metal-Poor Stars', The Astrophysical Journal, vol. 580, pp. 1149-1158.
- Beers, T, Drilling, J, Rossi, S et al. 2002, 'Metal Abundances and Kinematics of Bright Metal-poor Giants Selected from the LSE Survey: Implications for the Metal-weak Thick Disk', The Astronomical Journal, vol. 124, pp. 931-948.
- Gilmore, G, Wyse, R & Norris, J 2002, 'Deciphering the Last Major Invasion of the Milky Way', The Astrophysical Journal, vol. 574, pp. L39-L42.
- Cunha, K, Smith, V, Suntzeff, N et al. 2002, 'The Evolution of Copper in the Globular Cluster Omega Centauri', The Astronomical Journal, vol. 124, no. 1, pp. 379-388.
- Aoki, W, Norris, J, Ryan, S et al 2002, '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, vol. 54, pp. 933-949.
- Blake, L, Ryan, S, Norris, J et al 2001, 'Neutron-capture elements in the Sr-rich, Ba-normal metal-poor giant CS22897-008', Nuclear Physics A, vol. 688, pp. 502-504.
- Norris, J, Ryan, S & Beers, T 2001, 'Extremely Metal-poor Stars. VIII. High-resolution, High Signal-to-noise Ratio Analysis of Five Stars with [Fe/H] ≤-3.5.', The Astrophysical Journal, vol. 561, pp. 1034-1059.
- Aoki, W, Ryan, S, Norris, J et al. 2001, 'Neutron Capture Elements in s-Process-rich, Very Metal-poor Stars', The Astrophysical Journal, vol. 561, pp. 346-363.
- Dohm-Palmer, R, Helmi, A, Morrison, H et al. 2001, 'Mapping the Galactic Halo. V. Sagittarius Dwarf Spheroidal Tidal Debris 60� from the Main Body', The Astrophysical Journal, vol. 555, pp. L37-L40.
- Harding, P, Morrison, H, Olszewski, E et al. 2001, 'Mapping the Galactic Halo. III. Simulated Observations of Tidal Streams', The Astronomical Journal, vol. 122, pp. 1397-1419.
- Morrison, H, Olszewski, E, Mateo, M et al. 2001, 'Mapping the Galactic Halo. IV. Finding Distant Giants Reliably with the Washington System', The Astronomical Journal, vol. 121, pp. 283-294.
- Ryan, S, Aoki, W, Norris, J et al 2001, 'Lead (Pb) in the C-rich, s-process rich, metal poor subgiant LP625-44', Nuclear Physics A, vol. 688, pp. 209-212.
- Morrison, H, Mateo, M, Morita, M et al. 2000, 'Mapping the Galactic Halo. I. The Spaghetti Survey', The Astronomical Journal, vol. 119, pp. 2254-2273.
- Norris, J, Beers, T & Ryan, S 2000, 'Extremely Metal-poor Stars. VII. The Most Metal-poor Dwarf, CS 22876-032', The Astrophysical Journal, vol. 540, pp. 456-467.
- Ryan, S, Beers, T, Olive, K et al. 2000, 'Primordial Lithium and Big Bang Nucleosynthesis', The Astrophysical Journal, vol. 530, pp. L57-L60.
- Dohm-Palmer, R, Mateo, M, Olszewski, E et al. 2000, 'Mapping the Galactic Halo II: Photometric Survey', The Astronomical Journal, vol. 120, pp. 2496-2512.
- Aoki, W, Norris, J, Ryan, S et al. 2000, '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, vol. 536, pp. L97-L100.
- Beers, T, Rossi, S, Norris, J et al. 1999, 'Estimation of Stellar Metal Abundance. II. A Recalibration of the Ca II K Technique, and the Autocorrelation Function Method', The Astronomical Journal, vol. 117, pp. 981-1009.
- de Zeeuw, P & Norris, J 1999, 'The Third Stromlo Symposium- The Galactic Halo: Bright Stars and Dark Matter', Publications of the Astronomical Society of the Pacific, vol. 111, pp. 653-655.
- Norris, J, Ryan, S & Beers, T 1999, 'A Search for Stars of Very Low Metals Abundance. III. UBV Photometry of Metal-Weak Candidates', The Astrophysical Journal, vol. 123, pp. 639-686.
- Ryan, S, Norris, J & Beers, T 1999, 'The Spite Lithium Plateau: Ultrathin but Postprimordial', The Astrophysical Journal, vol. 523, no. 2, pp. 654-677.
- Gibson, B, Madgwick, D, Jones, L et al. 1999, 'The Spectroscopic Age of 47 Tucanae', The Astronomical Journal, vol. 118, pp. 1268-1272.
Projects and Grants
Grants information is drawn from ARIES. To add or update Projects or Grants information please contact your College Research Office.
- Satellite galaxies as probe of structure formation in our cosmic backyard (Secondary Investigator)
- Discovery and characterisation of Milky Way satellite galaxies (Secondary Investigator)
- Exploiting the Discovery of Ultra-faint Dwarf Galaxies in the Southern Hemisphere Sky (Secondary Investigator)
- Probing the Origin of Cen & M2: Dwarf Galaxy Nuclear Remnants? (Secondary Investigator)
- Galactic Origins: The Milky Way Globular Cluster - Halo Connection (Primary Investigator)
- The Early Epochs of the Milky Way Galaxy (Primary Investigator)
- Nucleosynthetic Signatures of the First Stars (Secondary Investigator)
