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Results 1 - 52 of 52

Chemical Evolution of R-process Elements in Stars (CERES). III. Chemical abundances of neutron capture elements from Ba to Eu
- Virtual Journal - Volume 22, Issue 50 - article #1
- L. Lombardo (OAT), C. J. Hansen (OAT), F. Rizzuti (OAT), G. Cescutti (INASAN), L. I. Mashonkina (INASAN), P. Franc{c}ois (GEPI), P. Bonifacio (GEPI), E. Caffau (GEPI), A Alencastro Puls (AIP), R. Fernandes de Melo (AIP), A. J. Gallagher (AIP), 'A. Sk'ulad'ottir (UniFI), A. J. Koch-Hansen (ZAH), L. Sbordone (ESO)
- https://arxiv.org/abs/2412.09141
Non-LTE abundances of nitrogen in the Sun and reference A-F type stars
- Virtual Journal - Volume 22, Issue 25 - article #8
- L. I. Mashonkina, T. A. Ryabchikova
- https://arxiv.org/abs/2406.11367
1D non-LTE corrections for chemical abundance analyses of very metal-poor stars. (arXiv:2307.04523v1 [astro-ph.SR])
- Virtual Journal - Volume 21, Issue 28 - article #1
- L. Mashonkina, Yu. Pakhomov, T. Sitnova, A. Smogorzhevskii, P. Jablonka, V. Hill
- http://arxiv.org/abs/2307.04523
Chemical diversity among A-B stars with low rotational velocities: non-LTE abundance analysis. (arXiv:2010.02058v1 [astro-ph.SR])
- Virtual Journal - Volume 18, Issue 41 - article #2
- L. Mashonkina, T. Ryabchikova, S. Alexeeva, T. Sitnova, O. Zatsarinny
- http://arxiv.org/abs/2010.02058
Mono-enriched stars and Galactic chemical evolution -- Possible biases in observations and theory. (arXiv:2009.11876v1 [astro-ph.SR])
- Virtual Journal - Volume 18, Issue 40 - article #6
- Camilla Juul Hansen, Andreas Koch, Lyudmila Mashonkina, Mattis Magg, Maria Bergemann, Tatyana Sitnova, Andrew J. Gallagher, Ilya Ilyin, Elisabetta Caffau, Huawei W. Zhang, Klauss G. Strassmeier, Ralf S. Klessen
- http://arxiv.org/abs/2009.11876
Influence of inelastic collisions with hydrogen atoms on the non-LTE line formation for Fe I and Fe II in the 1D model atmospheres of late-type stars. (arXiv:1908.02478v1 [astro-ph.SR])
- Virtual Journal - Volume 17, Issue 32 - article #3
- Lyudmila Mashonkina, Tatyana Sitnova, Svetlana A. Yakovleva, Andrey K. Belyaev
- http://arxiv.org/abs/1908.02478
Contribution of type Ia supernovae to the chemical enrichment of the ultra-faint dwarf galaxy Bootes I. (arXiv:1906.11540v1 [astro-ph.GA])
- Virtual Journal - Volume 17, Issue 26 - article #2
- Yu.V. Pakhomov, L.I. Mashonkina, T.M. Sitnova, P. Jablonka
- http://arxiv.org/abs/1906.11540
Even-to-Odd Barium Isotope Ratio in Selected Galactic Halo Stars. (arXiv:1906.10600v1 [astro-ph.SR])
- Virtual Journal - Volume 17, Issue 26 - article #3
- Lyudmila Mashonkina, Andrey K. Belyaev
- http://arxiv.org/abs/1906.10600
Chemical composition of metal-poor stars in Coma Berenices ultra-faint dwarf galaxy as a proxy to individual chemical enrichment events. (arXiv:1809.09425v1 [astro-ph.SR])
- Virtual Journal - Volume 16, Issue 39 - article #6
- Tatyana Sitnova, Lyudmila Mashonkina, Andrey Tatarnikov, Olga Voziakova, Marina Burlak, Yuriy Pakhomov
- http://arxiv.org/abs/1809.09425
NLTE abundances of C, O, Ca, Ti, and Fe in the reference BAF-type stars. (arXiv:1710.06726v1 [astro-ph.SR])
- Virtual Journal - Volume 15, Issue 42 - article #42
- Tatyana Sitnova, Tatyana Ryabchikova, Sofya Alexeeva, Lyudmila Mashonkina
- http://arxiv.org/abs/1710.06726
Impact of NLTE on determinations of atmospheric parameters and chemical abundances of very metal-poor stars. (arXiv:1708.06757v1 [astro-ph.SR])
- Virtual Journal - Volume 15, Issue 34 - article #9
- Lyudmila Mashonkina, Tatyana Sitnova, Yuri Pakhomov, Tatyana Ryabchikova
- http://arxiv.org/abs/1708.06757
The formation of the Milky Way halo and its dwarf satellites, a NLTE-1D abundance analysis. I. Homogeneous set of atmospheric parameters. (arXiv:1704.07656v1 [astro-ph.SR])
- Virtual Journal - Volume 15, Issue 17 - article #10
- L. Mashonkina, P. Jablonka, Yu. Pakhomov, T. Sitnova, P. North
- http://arxiv.org/abs/1704.07656
Systematic non-LTE study of the $-2.6 le$ [Fe/H] $le 0.2$ F and G dwarfs in the solar neighbourhood. II. Abundance patterns from Li to Eu. (arXiv:1610.00193v1 [astro-ph.SR])
- Virtual Journal - Volume 14, Issue 41 - article #15
- G. Zhao, L. Mashonkina, H. L. Yan, S. Alexeeva, C. Kobayashi, Yu. Pakhomov, J. R. Shi, T. Sitnova, K. F. Tan, H. W. Zhang, J. B. Zhang, Z. M. Zhou, M. Bolte, Y. Q. Chen, X. Li, F. Liu, M. Zhai
- http://arxiv.org/abs/1610.00193
Influence of departures from LTE on calcium, titanium, and iron abundance determinations in cool giants of different metallicities. (arXiv:1609.02731v1 [astro-ph.SR])
- Virtual Journal - Volume 14, Issue 38 - article #6
- Lyudmila Mashonkina, Tatyana Sitnova, Yuri Pakhomov
- http://arxiv.org/abs/1609.02731
NLTE carbon abundance determination in selected A- and B-type stars and the interpretation of C I emission lines
- Virtual Journal - Volume 14, Issue 33 - article #35
- Alexeeva, S. A., Ryabchikova, T. A., Mashonkina, L. I.
- >Oxford University Press
- http://mnras.oxfordjournals.org/cgi/content/short/462/1/1123?rss=1
Carbon abundances of the reference late-type stars from 1D analysis of atomic C I and molecular CH lines
- Virtual Journal - Volume 13, Issue 26 - article #3
- S. A. Alexeeva, L. I. Mashonkina
- arXiv.org - Astrophysics - Volume: 2015, Issue: 24 Jul
- arXiv:1507.05446 [pdf, ps, other]
The early days of the Sculptor dwarf spheroidal galaxy
- Virtual Journal - Volume 13, Issue 25 - article #34
- P. Jablonka, P. North, L. Mashonkina, V. Hill, Y. Revaz, M. Shetrone, E. Starkenburg, M. Irwin, E. Tolstoy, G. Battaglia, K. Venn, A. Helmi, F. Primas, P. Francois
- arXiv.org - Astrophysics - Volume: 2015, Issue: 3 Jul
- arXiv:1506.08636 [pdf, other]
The Hamburg/ESO R-process Enhanced Star survey (HERES) - X. HE 2252âˆ’4225, one more r-process enhanced and actinide-boost halo star
- Virtual Journal - Volume 12, Issue 23 - article #116
- L. Mashonkina, N. Christlieb and K. Eriksson
- Astronomy and Astrophysics - Volume: 569, Issue: September 2014
- http://dx.doi.org/10.1051/0004-6361/201424017
  Abstract Full HTML PDF (1.180 MB) ePUB (1.762 MB) References Tables at CDS NASA ADS Abstract Service
The Hamburg/ESO R-process Enhanced Star survey (HERES) - IX. Constraining pure r-process Ba/Eu abundance ratio from observations of r-II stars
- Virtual Journal - Volume 12, Issue 21 - article #104
- L. Mashonkina and N. Christlieb
- Astronomy and Astrophysics - Volume: 565, Issue: May 2014
- http://dx.doi.org/10.1051/0004-6361/201423651
  Abstract Full HTML PDF (256.4 KB) ePUB (1.522 MB) References Online Material NASA ADS Abstract Service
The Hamburg/ESO R-process Enhanced Star survey (HERES) X. HE 2252-4225, one more r-process enhanced and actinide-boost halo star
- Virtual Journal - Volume 12, Issue 20 - article #86
- L. Mashonkina, N. Christlieb, K. Eriksson
- arXiv.org - Astrophysics - Volume: 2014, Issue: 25 Jul
- arXiv:1407.5379 [pdf, ps, other]
The Hamburg/ESO R-process Enhanced Star survey (HERES) IX. Constraining pure r-process Ba/Eu abundance ratio from observations of r-II stars
- Virtual Journal - Volume 12, Issue 14 - article #13
- Lyudmila Mashonkina, Norbert Christlieb
- arXiv.org - Astrophysics - Volume: 2014, Issue: 4 Apr
- arXiv:1404.0511 [pdf, ps, other]
Atomic diffusion and mixing in old stars - IV. Weak abundance trends in the globular cluster NGC 6752
- Virtual Journal - Volume 11, Issue 29 - article #28
- P. Gruyters, A. J. Korn, O. Richard, F. Grundahl, R. Collet, L. I. Mashonkina, Y. Osorio and P. S. Barklem
- Astronomy and Astrophysics - Volume: 555, Issue: July 2013
- http://dx.doi.org/10.1051/0004-6361/201220821
  Abstract Full HTML PDF (831.8 KB) References Online Material NASA ADS Abstract Service
Review: progress in NLTE calculations and their application to large data-sets
- Virtual Journal - Volume 11, Issue 26 - article #13
- L. Mashonkina
- arXiv.org - Astrophysics - Volume: 2013, Issue: 28 Jun
- arXiv:1306.6426 [pdf, ps, other]
Atomic diffusion and mixing in old stars IV: Weak abundance trends in the globular cluster NGC 6752
- Virtual Journal - Volume 11, Issue 19 - article #1
- Pieter Gruyters, Andreas J. Korn, Olivier Richard, Frank Grundahl, Remo Collet, Lyudmila I. Mashonkina, Yeisson Osorio, Paul S. Barklem
- arXiv.org - Astrophysics - Volume: 2013, Issue: 10 May
- arXiv:1305.1774 [pdf, other]
Influence of Departures from LTE on Oxygen Abundance Determination
- Virtual Journal - Volume 11, Issue 6 - article #5
- T. M. Sitnova, L. I. Mashonkina, T. A. Ryabchikova
- arXiv.org - Astrophysics - Volume: 2013, Issue: 8 Feb
- arXiv:1302.1048 [pdf, ps, other]
Astrophysical tests of atomic data important for stellar Mg abundance determinations
- Virtual Journal - Volume 10, Issue 50 - article #5
- Lyudmila Mashonkina
- arXiv.org - Astrophysics - Volume: 2012, Issue: 14 Dec
- arXiv:1212.3192 [pdf, ps, other]
A primordial star in the heart of the Lion
- Virtual Journal - Volume 10, Issue 11 - article #4
- E. Caffau (1,2,3), P. Bonifacio (2,3), P. François (2,4), M. Spite (2), F. Spite (2), S. Zaggia (5), H.-G. Ludwig (1,2), M. Steffen (6), L. Mashonkina (7), L. Monaco (3), L. Sbordone (1,2), P. Molaro (8), R. Cayrel (2), B. Plez (9), V. Hill (10), F. Hammer (2), S. Randich (11) ((1) ZAH-LSW Heidelberg, (2) GEPI - Obs. de Paris, CNRS, Univ. Paris Diderot, (3) ESO - Santiago, (4) Univ. de Picardie Jules Verne,(5) INAF - Osservatorio Astronomico di Padova, (6) Leibniz Institut für Astrophysik Potsdam, (7) Institute of Astronomy, Russian Academy of Sciences, (8) INAF - Osservatorio Astronomico di Trieste, (9) LUPM - Univ. Montpellier 2, CNRS, (10) Univ. de Nice Sophia Antipolis, CNRS, OCA, Lab. Cassiopée, (11) INAF - Osservatorio Astrofisico di Arcetri)
- arXiv.org - Astrophysics - Volume: 2012, Issue: 16 Mar
- arXiv:1203.2607 [pdf, ps, other]
Non-LTE effects on the lead and thorium abundance determinations for cool stars
- Virtual Journal - Volume 10, Issue 7 - article #14
- Lyudmila Mashonkina, Alexander Ryabtsev, Anna Frebel
- arXiv.org - Astrophysics - Volume: 2012, Issue: 17 Feb
- arXiv:1202.2630 [pdf, ps, other]
The r- and s-process contributions to heavy-element abundances in the halo star HD 29907
- Virtual Journal - Volume 9, Issue 31 - article #9
- T. M. Sitnova and L. I. Mashonkina
- Astronomy Letters - Volume: 37, Issue: 7
- Download PDF (848.3 KB)
Formation of Zr I and II lines under non-LTE conditions of stellar atmospheres
- Virtual Journal - Volume 9, Issue 8 - article #25
- A. B. Velichko, L. I. Mashonkina and H. Nilsson
- Astronomy Letters - Volume: 36, Issue: 9
- Download PDF (861.7 KB)
Formation of Zr I and II lines under non-LTE conditions of stellar atmospheres
- Virtual Journal - Volume 9, Issue 5 - article #3
- A. Velichko, L. Mashonkina, H. Nilsson
- arXiv.org - Astrophysics - Volume: 2011, Issue: 4 Feb
- arXiv:1102.0085 [pdf, ps, other]
The Hamburg/ESO R-process Enhanced Star survey (HERES). V. Detailed abundance analysis of the r-process enhanced star HE 2327-5642
- Virtual Journal - Volume 8, Issue 12 - article #8
- L. Mashonkina, N. Christlieb, P.S. Barklem, V. Hill, T.C. Beers, A. Velichko
- arXiv.org - Astrophysics - Volume: 2010, Issue: 19 Mar
- arXiv:1003.3571 [ps, pdf, other]
Statistical equilibrium of silicon in the atmospheres of metal-poor stars
- Virtual Journal - Volume 7, Issue 35 - article #13
- J. R. Shi, T. Gehren, L. Mashonkina, and G. Zhao
- Astronomy and Astrophysics - Volume: 503, Issue: 2
- Abstract | PDF file (207.5 KB) | PS file (99.90 KB)
Statistical equilibrium of silicon in the atmospheres of metal-poor stars
- Virtual Journal - Volume 7, Issue 31 - article #8
- J.R. Shi, T. Gehren, L. Mashonkina, G. Zhao
- arXiv.org - Astrophysics - Volume: 2009, Issue: 31 Jul
- arXiv:0907.4928 [ps, pdf, other]
He 1327–2326, An Unevolved Star with [Fe/H] < –5.0. III. Does its Atmosphere Reflect its Natal Composition?
- Virtual Journal - Volume 7, Issue 22 - article #30
- <em >A. J. Korn, O. Richard, L. Mashonkina, M. S. Bessell, A. Frebel, and W. Aoki</em&gt,
- The Astrophysical Journal - Volume: 698, Issue: 1
- Abstract | References
Model atmospheres of chemically peculiar stars: Self-consistent empirical stratified model of HD24712
- Virtual Journal - Volume 7, Issue 13 - article #9
- D. Shulyak (1), T. Ryabchikova (1 and 2), L. Mashonkina (2), O. Kochukhov (3) ((1) Institute of Astronomy, Vienna University, Austria, (2) Institute of Astronomy, Russian Academy of Science, Russia, (3) Department of Astronomy and Space Physics, Uppsala University, Sweden)
- arXiv.org - Astrophysics - Volume: 2009, Issue: 27 Mar
- arXiv:0903.3474 [ps, pdf, other]
Nucleosynthesis Modes in the High-Entropy-Wind of Type II Supernovae: Comparison of Calculations with Halo-Star Observations
- Virtual Journal - Volume 7, Issue 4 - article #6
- K. Farouqi, K.-L. Kratz, L.I. Mashonkina, B.Pfeiffer, J.J Cowan, F.-K. Thielemann, J.W. Truran
- arXiv.org - Astrophysics - Volume: 2009, Issue: 22 Jan
- arXiv:0901.2541 [ps, pdf, other]
Neutron-capture elements in halo, thick-disk, and thin-disk stars. Strontium, yttrium, zirconium, cerium
- Virtual Journal - Volume 6, Issue 51 - article #15
- L. I. Mashonkina, A. B. Vinogradova, D. A. Ptitsyn, V. S. Khokhlova and T. A. Chernetsova
- Astronomy Reports - Volume: 51, Issue: 11
- PDF (756.2 KB)Free PreviewFree Preview
Nucleosynthesis modes in the high-entropy-wind of type II supernovae
- Virtual Journal - Volume 6, Issue 40 - article #21
- K.-L. Kratz, K. Farouqi, L.I. Mashonkina, B. Pfeiffer
- New Astronomy Reviews - Volume: 52, Issue: 7-10
- PDF (278 K) | Related Articles
Non-LTE line formation for heavy elements in four very metal-poor stars
- Virtual Journal - Volume 6, Issue 3 - article #32
- L. Mashonkina, G. Zhao, T. Gehren, W. Aoki, M. Bergemann, K. Noguchi, J. R. Shi, M. Takada-Hidai, and H. W. Zhang
- Astronomy and Astrophysics - Volume: 478, Issue: 2
- Abstract | PDF file (1.343 MB) | PS file (329.9 KB)
Non-LTE line formation for heavy elements in four very metal-poor stars
- Virtual Journal - Volume 5, Issue 48 - article #24
- L. Mashonkina, G. Zhao, T. Gehren, W. Aoki, M. Bergemann, K. Noguchi, J.R. Shi, M.Takada-Hidai, H.W. Zhang
- arXiv.org - Astrophysics - Volume: 2007, Issue: 29 Nov
- arXiv:0711.4454 [ps, pdf, other]
New Abundances for Old Stars - Atomic Diffusion at Work in NGC 6397
- Virtual Journal - Volume 4, Issue 40 - article #2
- A.J. Korn (1), F. Grundahl (2), O. Richard (3), P.S. Barklem (1), L. Mashonkina (4), R. Collet (1), N. Piskunov (1), B. Gustafsson (1) ((1) Department of Astronomy and Space Physics, Uppsala University, Sweden; (2) Department of Physics and Astronomy, University of Aarhus, Aarhus, Denmark; (3) 3GRAAL-UMR5024/ISTEEM (CNRS), Universite Montpellier II, Montpellier, France; (4) Institute of Astronomy, Russian Academy of Science, Moscow, Russia)
- ArXiv - Astrophysics
- astro-ph/0610077 [abs, pdf]
Barium even-to-odd isotope abundance ratios in thick disk and thin disk stars
- Virtual Journal - Volume 4, Issue 34 - article #16
- L. Mashonkina and G. Zhao
- Astronomy and Astrophysics - Volume 456, Issue 1 - August, 2006
- Abstract, Full HTML, PDF file (241 KB), PS file (92.5 KB), References
A probable stellar solution to the cosmological lithium discrepancy
- Virtual Journal - Volume 4, Issue 32 - article #18
- A. J. Korn (1), F. Grundahl (2), O. Richard (3), P.S. Barklem (1), L. Mashonkina (4), R. Collet (1), N. Piskunov (1), B. Gustafsson (1) ((1) Department of Astronomy and Space Physics, Uppsala University, Sweden; (2) Department of Physics and Astronomy, University of Aarhus, Aarhus, Denmark; (3) 3GRAAL-UMR5024/ISTEEM (CNRS), Universite Montpellier II, Montpellier, France; (4) Institute of Astronomy, Russian Academy of Science, Moscow, Russia)
- ArXiv - Astrophysics
- astro-ph/0608201 [abs, ps, pdf, other]
A probable stellar solution to the cosmological lithium discrepancy
- Virtual Journal - Volume 4, Issue 32 - article #32
- A. J. Korn, F. Grundahl, O. Richard, P. S. Barklem, L. Mashonkina, R. Collet, N. Piskunov and B. Gustafsson
- Nature - Volume 442, Issue 7103
- First paragraph, Full Text, PDF (142K), Supplementary informationSee also: Editor's summary
Barium even-to-odd isotope abundance ratios in thick disk and thin disk stars
- Virtual Journal - Volume 4, Issue 15 - article #11
- L. Mashonkina, G. Zhao
- ArXiv - Astrophysics
- astro-ph/0604198 [abs, ps, pdf, other]
The Hamburg/ESO R-process Enhanced Star survey (HERES) - I. Project description, and discovery of two stars with strong enhancements of neutron-capture elements
- Virtual Journal - Volume 2, Issue 49 - article #32
- 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. NordstrÃ¶m, B. Pfeiffer, J. Rhee and S. G. Ryan
- Astronomy and Astrophysics – Vol 428, No 3 – December 2004
- Abstract , PDF file (306 KB) , PS file (112 KB)
The Hamburg/ESO R-process Enhanced Star survey (HERES). I. Project description, and discovery of two stars with strong enhancements of neutron-capture elements
- Virtual Journal - Volume 2, Issue 34 - article #22
- 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. Nordstr{Ã¶}m, B. Pfeiffer, J. Rhee, S.G. Ryan
- arXiv - Astrophysics - August 2004
- astro-ph/0408389 [ abs , ps , pdf , other ]
The Atmospheric Lithium Abundances of Solar Analogues
- Virtual Journal - Volume 2, Issue 25 - article #59
- A. I. Galeev, I. F. Bikmaev, L. I. Mashonkina, F. A. Musaev, and G. A. Galazutdinov
- Astronomy Reports – Volume 48, Issue 6 - June 2004
- Abstract Full Text: [ PDF (381 kB) GZipped PS ] Order

Magnesium abundances in mildly metal-poor stars from different indicators
- Virtual Journal - Volume 2, Issue 19 - article #34
- C. Abia, L. Mashonkina
- Monthly Notices of the Royal Astronomical Society - May 2004 - Volume 350 Issue 3
- Abstract , Full Text
Neutron-Capture Elements in Halo, Thick-Disk, and Thin-Disk Stars: Neodymium
- Virtual Journal - Volume 2, Issue 11 - article #17
- L. I. Mashonkina, L. A. Kamaeva, V. A. Samotoev, and N. A. Sakhibullin
- Astronomy Reports - Volume 48, Issue 3
- Abstract Full Text: [ PDF (337 kB) GZipped PS ] Order
Magnesium abundances in mildly metal-poor stars from different indicators
- Virtual Journal - Volume 2, Issue 7 - article #15
- Carlos Abia, Lyudmila Mashonkina
- arXiv.org – Astrophysics – February 2004
- astro-ph/0402368 [ abs , ps , pdf , other ]

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