Publications

Note, the vast majority of my papers are available free at arXiv.org.

Lists of publications from ADS:

Click links below to jump to a certain category on this page:

Refereed Journal Articles

    2012

  1. Inelastic Mg+H collision data for non-LTE applications in stellar atmospheres
    P. S. Barklem, A. K. Belyaev, A. Spielfiedel, M. Guitou, N. Feautrier,
    A&A accepted (2012)     arXiv

  2. Cross sections for low-energy inelastic Mg + H and Mg+ + H− collisions
    A. K. Belyaev, P. S. Barklem, A. Spielfiedel, M. Guitou, N. Feautrier, D. S. Rodionov, D. V. Vlasov,
    Physical Review A85, 032704 (2012) PRA site

    2011

  3. On inelastic hydrogen atom collisions in stellar atmospheres
    P. S. Barklem, A. K. Belyaev, M. Guitou, N. Feautrier, F.X. Gadea, A. Spielfiedel,
    A&A 530, A94 (2011) ADS Entry

  4. The influence of electron collisions on non-LTE Li line formation in stellar atmospheres
    Y. Osorio, P. S. Barklem, K. Lind, M. Asplund
    A&A 529, A31 (2011) ADS Entry

  5. Non-LTE calculations for neutral Na in late-type stars using improved atomic data
    K. Lind, M. Asplund, P. S. Barklem, A. K. Belyaev
    A&A 528, 103 (2011) ADS Entry

  6. Multichannel cross sections for excitation of sodium atoms in slow collisions with hydrogen atoms.
    V. D. Vlasov, P. S. Barklem, A. K. Belyaev
    Optika i Spektroskopiya 110, 355-361, 2011 [in Russian]; English translation: Optics and Spectroscopy, 321-327 (2011)

  7. The Hamburg/ESO R-process Enhanced Star survey (HERES) VI. The Galactic Chemical Evolution of Silicon
    L. Zhang, T. Karlsson, N. Christlieb, A. J. Korn, P. S. Barklem, G. Zhao
    A&A 528, 92 (2011) ADS Entry

  8. Inelastic Mg+H collision processes at low energies
    M. Guitou, A. K. Belyaev, P. S. Barklem, A. Spielfiedel, N. Feautrier
    J. Phys. B: At. Mol. Opt. Phys. 44, 035202 (2011) Journal Entry

    2010

  9. Inelastic Na+H collision data for non-LTE applications in stellar atmospheres
    P. S. Barklem, A. K. Belyaev, A. S. Dickinson, F. X. Gadea
    A&A 519, 20 (2010) ADS Entry

  10. The Hamburg/ESO R-process Enhanced Star survey (HERES).
    V. Detailed abundance analysis of the r-process enhanced star HE 2327-5642
    L. Mashonkina, N. Christlieb, P.S. Barklem, V. Hill, T.C. Beers, A. Velichko
    A&A 516, 46 (2010) ADS Entry

  11. Cross sections for low-energy inelastic H+Na collisions
    A. K. Belyaev, P. S. Barklem, A. S. Dickinson, F. X. Gadea
    Physical Review A 81, 032706 (2010) PRA link ADS Entry

    2009

  12. The stellar content of the Hamburg/ESO survey.
    V. The metallicity distribution function of the Galactic halo.
    T. Schörck, N. Christlieb, J. G. Cohen, T. C. Beers, S. Shectman, I. Thompson, A. McWilliam, M. S. Bessell, J. E. Norris, J. Melendez, S. Solange Ramirez, D. Haynes, P. Cass, M. Hartley, K. Russell, F. Watson, F.-J. Zickgraf, B. Behnke, C. Fechner, B. Fuhrmeister, P. S. Barklem, B. Edvardsson, A. Frebel, L. Wisotzki, and D. Reimers
    A&A 507, 817-832 (2009) ADS Entry

  13. The Hamburg/ESO R-process Enhanced Star survey (HERES).
    IV. Detailed abundance analysis and age dating of the strongly r-process enhanced stars CS 29491-069 and HE 1219-0312.
    W. Hayek, U. Wiesendahl, N. Christlieb, K. Eriksson, A.J. Korn, P. S. Barklem, V. Hill, T. C. Beers, S.G. Ryan, K.-L. Kratz, B. Pfeiffer, and K. Farouqi
    A&A 504, 511-524 (2009) ADS Entry

  14. Departures from LTE for neutral Li in late-type stars
    K. Lind, M. Asplund, P. S. Barklem
    A&A 503, 541-544 (2009) ADS Entry

  15. Neutral oxygen spectral line formation revisted with new collisional data: large departures from LTE at low metallicity
    D. Fabbian, M. Asplund, P. S. Barklem, M. Carlsson, D. Kiselman
    A&A 500, 1221-1238 (2009) ADS Entry

  16. Lithium Abundances of Extremely Metal-Poor Turn-off Stars.
    W. Aoki, P. S. Barklem, T. C. Beers, N. Christlieb, S. Inoue, A. E. Garcia Perez, J. E. Norris, D. Carollo
    ApJ 698, 1803- (2009) ADS Entry

    2008

  17. Hydrogen Lines (non-refereed, edited)
    P. S. Barklem
    Physica Scripta 133, 014023 (2008) ADS Entry

  18. Atomic diffusion and mixing in old stars.
    II. Observations of stars in the globular cluster NGC 6397 with VLT/FLAMES-GIRAFFE
    K. Lind, A. J. Korn, P. S. Barklem, F. Grundahl
    A&A 490, 777-786 (2008) ADS Entry

    2007

  19. Atomic Diffusion and Mixing in Old Stars
    I. VLT/FLAMES-UVES Observations of Stars in NGC 6397
    A. J. Korn, F. Grundahl, O. Richard, P. S. Barklem, L. Mashonkina, R. Collet, B. Gustafsson, N. Piskunov
    ApJ 671, 402- (2007). ADS Entry

  20. Non-LTE Balmer line formation in late-type spectra: Effects of atomic processes involving hydrogen atoms
    P. S. Barklem
    A&A 466, 327-337 (2007) ADS Entry

  21. Multipole rates for atomic polarization studies: the case of complex atoms in non-spherical states colliding with atomic hydrogen
    S. Sahal-Bréchot, M. Derouich, V. Bommier, P. S. Barklem
    A&A 465, 667-677 (2007) ADS Entry

  22. Spin depolarizing effect in collisions with neutral hydrogen.
    II. Application to simple/complex ions in spherically symmetric states
    M. Derouich, P. S. Barklem
    A&A 462, 1171-1177 (2007) ADS Entry

  23. Electron-impact excitation of neutral oxygen
    P. S. Barklem
    A&A 462, 781-788 (2007) ADS Entry

    2006

  24. The frequency of carbon-enhanced metal-poor stars in the galaxy from the HERES sample
    S. Lucatello, T.C. Beers, N. Christlieb, P. S. Barklem, S. Rossi, B. Marsteller, T. Sivarani, Y. Sun Lee
    ApJ 652, L37-L40 (2006) ADS Entry

  25. A probable stellar solution to the cosmological lithium discrepancy
    A. J. Korn, F. Grundahl, O. Richard, P. S. Barklem, L. Mashonkina, R. Collet, N. Piskunov, B. Gustafsson
    Nature 442, 657-659 (2006) ADS Entry

  26. The Hamburg/ESO R-process Enhanced Star survey (HERES).
    III. HE 0338-3945 and the formation of the r+s stars
    K. Jonsell, P. S. Barklem, B. Gustafsson, N. Christlieb, V. Hill, T. C. Beers, and J. Holmberg
    A&A 451, 651-670 (2006) ADS Entry

  27. HE 1327-2326, an Unevolved Star with [Fe/H] < -5.0.
    I. A Comprehensive Abundance Analysis
    W. Aoki, A. Frebel, N. Christlieb, J. E. Norris, T. C. Beers, T. Minezaki, P. S. Barklem, S. Honda, M. Takada-Hidai, M. Asplund, S. G. Ryan, S. Tsangarides, K. Eriksson, A. Steinhauer, C. P. Deliyannis, K. Nomoto, M. Y. Fujimoto, H. Ando, Y. Yoshii, and T. Kajino
    ApJ 639, 897-917 (2006) ADS Entry

    2005

  28. Spin depolarizing effect in collisions of simple/complex atoms in spherically symmetric states with neutral hydrogen
    M. Derouich, P. S. Barklem, S. Sahal-Bréchot
    A&A 441, 395-406 (2005) ADS Entry

  29. The Hamburg/ESO R-process Enhanced Star survey (HERES).
    II. Spectroscopic analysis of the survey sample
    P. S. Barklem, N. Christlieb, T. C. Beers, V. Hill, M. S. Bessell, J. Holmberg, B. Marsteller, S. Rossi, F.-J. Zickgraf, D. Reimers
    A&A 439, 129-151 (2005) ADS Entry

  30. Nucleosynthetic signatures of the first stars
    A. Frebel, W. Aoki, N. Christlieb, H. Ando, M. Asplund, P. S. Barklem, T. C. Beers, K. Eriksson, C. Fechner, M. Fujimoto, S. Honda, T. Kajino, T. Minezaki, K. Nomoto, J. E. Norris, S. G. Ryan, M. Takada-Hidai, S. Tsangarides, Y. Yoshii
    Nature 434, 871-873 (2005) ADS Entry

  31. The broadening of Fe II lines by neutral hydrogen collisions
    P. S. Barklem, J. Aspelund-Johansson
    A&A 435, 373-377 (2005) ADS Entry, tables

  32. Collisional depolarization of the lines of complex atoms/ions by neutral hydrogen
    M. Derouich, S. Sahal-Bréchot, P. S. Barklem
    A&A 434, 779-784 (2005) ADS Entry.

  33. Efficient Searches for r-Process-Enhanced, Metal-Poor Stars
    T. C. Beers, P. S. Barklem, N. Christlieb, V. Hill,
    Nuclear Physics A 758, 595-598 (2005) ADS Entry.

    2004

  34. The Hamburg/ESO R-process Enhanced Star survey (HERES).
    I. Project description, and discovery of two stars with strong enhancements of neutron-capture elements
    N. Christlieb, T. C. Beers, P. S. Barklem, M. Bessell, V. Hill, J. Holmberg, A.J. Korn, B. Marsteller, L. Mashonkina, Y.-Z. Qian, S. Rossi, G.J. Wasserburg, F.-J. Zickgraf, K.-L. Kratz, B. Nordstrom, B. Pfeiffer, J. Rhee, S.G. Ryan
    A&A 428, 1027-1037 (2004) ADS entry.

  35. S4N: A Spectroscopic Survey of Stars in the Solar Neighborhood
    C. Allende Prieto, P. S. Barklem, D. L. Lambert, K. Cunha,
    A&A 420, 183-205 (2004) ADS Entry. S4N web page (Uppsala Mirror).

  36. Collisional depolarization and transfer rates of spectral lines by atomic hydrogen.
    IV: Application to ionised atoms
    M. Derouich, S. Sahal-Bréchot, P. S. Barklem
    A&A 426, 707-715 (2004) ADS Entry.

  37. Collisional broadening of Mg, Sr, Ca and Na resonance lines by atomic hydrogen
    B. Kerkeni, P. S. Barklem, A. Spielfiedel, N. Feautrier
    J. Phys. B: At. Mol. Opt. Phys., 37(3), 677-688 (2004) ADS Entry .

  38. A Chemically Ancient Star.
    I. A Detailed Abundance Analysis
    N. Christlieb, B. Gustafsson, A. J. Korn, P. S. Barklem, T. C. Beers, M. S. Bessell, T. Karlsson, M. Mizuno-Wiedner
    ApJ, 603, 708-728 (2004) ADS Entry.

  39. On the collisional depolarization and transfer rates of spectral lines by atomic hydrogen.
    III: Application to f states of neutral atoms
    M. Derouich, S. Sahal-Bréchot, P. S. Barklem
    A&A, 414, 373-376 (2004) ADS Entry

    2003

  40. Cross sections for low-energy inelastic H+Li collisions
    A. K. Belyaev, P. S. Barklem
    Physical Review A, 062703 (2003) ADS Entry.

  41. Inelastic H+Li and H^-+Li^+ collisions and non-LTE Li I line formation in stellar atmospheres
    P. S. Barklem, A. K. Belyaev, M. Asplund
    A&A, 409, L1-L4 (2003) ADS Entry

  42. Semi-classical theory of collisional depolarization of spectral lines by atomic hydrogen.
    II: Application to d states of neutral atoms
    M. Derouich, S. Sahal-Bréchot, P. S. Barklem
    A&A, 409, 369-373 (2003) ADS Entry

  43. Accurate atomic parameters for near-infrared spectral lines
    J. M. Borrero, L. R. Bellot Rubio, P. S. Barklem, J. C. del Toro Iniesta
    A&A, 404, 749-762 (2003) ADS Entry

  44. Semi-classical theory of collisional depolarization of spectral lines by atomic hydrogen.
    I: Application to p states of neutral atoms
    M. Derouich, S. Sahal-Bréchot, P. S. Barklem, B. J. O'Mara
    A&A, 404, 763-773 (2003) ADS Entry

    2002

  45. A stellar relic from the early Milky Way
    N. Christlieb, M. S. Bessell, T. C. Beers, B. Gustafsson, A. Korn, P. S. Barklem, T. Karlsson, M. Mizuno-Wiedner, S. Rossi
    Nature 419, 904-907 (2002) astro-ph , ADS Entry.

  46. Interpretation of the Core-Wing Anomaly of Balmer line profiles of cool Ap stars
    O. Kochukhov, S. Bagnulo, and P. S. Barklem
    ApJ Letters, 578, 75-78 (2002) ADS Entry.

  47. Abundance analysis of two late A-type stars HD 32115 and HD 37594
    I. F. Bikmaev, T. A. Ryabchikova, H. Bruntt, F. A. Musaev, L. I. Mashonkina, E. V. Belyakova, V. V. Shimansky, P. S. Barklem, and G. Galazutdinov
    A&A, 389, 537-546 (2002) ADS Entry.

  48. Detailed analysis of Balmer lines in cool dwarf stars
    P. S. Barklem, H. C. Stempels, C. Allende Prieto, O. P. Kochukhov, N. Piskunov, and B. J. O'Mara,
    A&A, 385, 951-967 (2002) ADS Entry.

    2001

  49. Comments on alternative calculations of the broadening of spectral lines of neutral sodium by H-atom collisions
    P. S. Barklem, and B. J. O'Mara,
    J Phys B: At. Mol. Opt. Phys., 34(23), 4785-4800 (2001) ADS Entry.

  50. Chemical Abundances from Inversions of Stellar Spectra: Analysis of Solar-Type Stars with Homogeneous and Static Model Atmospheres
    C. Allende Prieto, P. S. Barklem, M. Asplund, B. Ruiz Cobo,
    ApJ, 558, 830-851 (2001) ADS Entry.

    2000

  51. Self broadening in Balmer line wing formation in stellar atmospheres
    P. S. Barklem, N. Piskunov, and B. J. O'Mara,
    A&A, 363, 1091-1105 (2000) ADS Entry.

  52. Self broadening of hydrogen lines: Initial results.
    P. S. Barklem, N. Piskunov and B. J. O'Mara,
    A&A, 355, L5-L8 (2000) ADS Entry.

  53. A list of data for the broadening of metallic lines by neutral hydrogen collisions.
    P. S. Barklem, N. Piskunov and B. J. O'Mara,
    A&AS, 142 (3), 467-473 (2000) ADS Entry.

  54. Broadening of lines of Be II, Sr II and Ba II by collisions with hydrogen atoms and the solar abundance of strontium.
    P. S. Barklem and B. J. O'Mara,
    MNRAS, 311, 535-540 (2000) ADS Entry.

    1998

  55. The broadening of strong lines of Ca+, Mg+ and Ba+ by collisions with neutral hydrogen atoms.
    P. S. Barklem and B. J. O'Mara,
    MNRAS, 300, 863-871 (1998) ADS Entry.

  56. Line broadening cross-sections for the broadening of transitions of neutral atoms by collisions with neutral hydrogen.
    P. S. Barklem, S. D. Anstee and B. J. O'Mara,
    Publications of the Astronomical Society of Australia, 15(3), 336-338 (1998) ADS Entry.

    A fortran program is described in this paper, which interpolates the data for the s-p, p-s, p-d, d-p, d-f, and f-d from the two papers below and that of Anstee and O'Mara is available here: Cross-Section Calculator Page

  57. The broadening of d-f and f-d transitions by collisions with neutral hydrogen atoms.
    P. S. Barklem, B. J. O'Mara and J. E. Ross,
    MNRAS, 296, 1057-1060 (1998) ADS Entry.

    1997

  58. The broadening of p-d and d-p transitions by collisions with neutral hydrogen atoms.
    P. S. Barklem and B. J. O'Mara,
    MNRAS, 290, 102-106 (1997) ADS Entry.

Selected Non-refereed Publications

(particularly non-refereed papers where parts of the content are not published in refereed articles above)

A reasonably complete list of non-refereed publications from ADS is available here.

  1. Hydrogen Lines
    P. S. Barklem
    Physica Scripta 133, 014023 (2008) ADS Entry

  2. New Abundances for Old Stars - Atomic Diffusion at Work in NGC 6397
    A. J. Korn, F. Grundahl, O. Richard, P. S. Barklem, L. Mashonkina, R. Collet, N. Piskunov, B. Gustafsson
    ESO Messenger 125, 6-10 (2006) ADS Entry

  3. Self broadening of Balmer Lines unsing asymptotic Potentials: Applications to Stellar Spectroscopy
    P. S. Barklem
    Proceedings of 17th International Conference on Spectral Line Shapes (2004) page 321
    Paper

  4. Hydrogen Balmer lines as probes of stellar atmospheres
    P. S. Barklem and N. Piskunov.
    Proceedings of Modelling of Stellar Atmospheres, IAU Symposium 210 (2003)
    Preprint

  5. The Broadening of Spectral Lines by Collisions with Neutral Hydrogen Atoms.
    P. S. Barklem,
    PhD Thesis, The University of Queensland (1998)
    Postscript available via request.