Publikationen von I. Ramírez

Casagrande, L.; Schönrich, R.; Asplund, M.; Cassisi, S.; Ramírez, I.; Meléndez, J.; Bensby, T.; Feltzing, S.: New constraints on the chemical evolution of the solar neighbourhood and galactic disc(s) - improved astrophysical parameters for the Geneva-Copenhagen Survey. Astronomy & Astrophysics 530, A138, S. 1 - 21 (2011)

Meléndez, J.; Schuster, W. J.; Silva, J. S.; Ramírez, I.; Casagrande, L.; Coelho, P.: uvby-β photometry of solar twins - the solar colors, model atmospheres, and the Teff and metallicity scales. Astronomy & Astrophysics 522, A98, S. 1 - 15 (2010)

Ramírez, I.; Asplund, M.; Baumann, P.; Meléndez, J.; Bensby, T.: A possible signature of terrestrial planet formation in the chemical composition of solar analogs. Astronomy & Astrophysics 521, A33, S. 1 - 12 (2010)

Baumann, P.; Ramírez, I.; Meléndez, J.; Asplund, M.; Lind, K.: Lithium depletion in solar-like stars: no planet connection. Astronomy & Astrophysics 519, A87, S. 1 - 11 (2010)

Meléndez, J.; Ramírez, I.; Casagrande, L.; Asplund, M.; Gustafsson, B.; Yong, D.; do Nascimento, J. D.; Castro, M.; Bazot, M.: The solar, exoplanet and cosmological lithium problems. Astrophysics and Space Science 328 (1-2), S. 193 - 200 (2010)

Meléndez, J.; Casagrande, L.; Ramírez, I.; Asplund, M.; Schuster, W. J.: Observational evidence for a broken Li Spite plateau and mass-dependent Li depletion. Astronomy & Astrophysics 515, L3, S. 1 - 7 (2010)

Alves-Brito, A.; Meléndez, J.; Asplund, M.; Ramírez, I.; Yong, D.: Chemical similarities between galactic bulge and local thick disk red giants: O, Na, Mg, Al, Si, Ca, and Ti. Astronomy & Astrophysics 513, A35, S. 1 - 17 (2010)

Ramírez, I.; Meléndez, J.; Asplund, M.: Accurate abundance patterns of solar twins and analogs - Does the anomalous solar chemical composition come from planet formation? Astronomy & Astrophysics 508 (1), S. L17 - L20 (2009)

Ramírez, I.; Allende Prieto, C.; Koesterke, L.; Lambert, D. L.; Asplund, M.: Granulation in K-type dwarf stars - II. Hydrodynamic simulations and 3D spectrum synthesis. Astronomy & Astrophysics 501 (3), S. 1087 - 1101 (2009)

Wittenmeyer, R. A.; Endl, M.; Cochran, W. D.; Ramírez, I.; Reffert, S.; MacQueen, P. J.; Shetrone, M.: HD 91669B: a new brown dwarf candidate from the McDonald observatory planet search. Astronomical Journal 137 (3), S. 3529 - 3532 (2009)

Ramírez, I.; Allende Prieto, C.; Lambert, D. L.: Granulation in K-type dwarf stars - I. Spectroscopic observations. Astronomy & Astrophysics 492 (3), S. 841 - 855 (2008)

Meléndez, J.; Asplund, M.; Gustafsson, B.; Yong, D.; Ramírez, I.: Unprecedented accurate abundances: Signatures of other Earths? In: Chemical Abundances in the Universe: Connecting First Stars to Planets, S. 412 - 415 (Hg. Cunha, K.; Spite, M.; Barbuy, B.). 265th Symposium of the International Astronomical Union, Rio de Janeiro, Brazil, 10. August 2009 - 14. August 2009. (2010)

Meléndez, J.; Casagrande, L.; Ramírez, I.; Asplund, M.: Precise Li abundances in metal-poor stars: depletion in the Spite plateau. In: Chemical Abundances in the Universe: Connecting First Stars to Planets, S. 71 - 72 (Hg. Cunha, K.; Spite, M.; Barbuy, B.). 265th Symposium of the International Astronomical Union, Rio de Janeiro, Brazil, 10. August 2009 - 14. August 2009. (2010)

Meléndez, J.; Casagrande, L.; Ramirez, I.; Asplund, M.; Schuster, W. J.: Observational signatures for depletion in the Spite plateau: Solving the cosmological Li discrepancy? In: Light Elements in the Universe, S. 211 - 214 (Hg. Charbonnel, C.; Tosi, M.; Primas, F.; Chiappini, C.). 268th Symposium of the International Astronomical Union, Geneva, Switzerland, 09. November 2009 - 13. November 2009. (2010)

Meléndez, J.; Ramírez, I.; Asplund, M.; Baumann, P.: Lithium in other Suns: no connection between stars and planets. In: Light Elements in the Universe, S. 341 - 342 (Hg. Charbonnel, C.; Tosi, M.; Primas, F.; Chiappini, C.). 268th Symposium of the International Astronomical Union, Geneva, Switzerland, 09. November 2009 - 13. November 2009. (2010)

Ramirez, I.: The impact of IAU educational programs on Peruvian astronomy. In: Highlights of Astronomy as presented at the XXVII IAU General Assembly, 2009, S. 657 - 657 (Hg. Corbett, I. F.). XXVII IAU General Assembly, Rio de Janeiro, Brazil, 2009. (2010)

Ramirez, I.; Allende Prieto, C.; Lambert, D. L.; Koesterke, L.; Asplund, M.: Granulation across the HR diagram. In: Highlights of Astronomy as presented at the XXVII IAU General Assembly, 2009, S. 332 - 332 (Hg. Corbett, I. F.). XXVII IAU General Assembly, Rio de Janeiro, Brazil, 2009. (2010)

Allende Prieto, C.; Koesterke, L.; Ramírez, I.; Ludwig, H.-G.; Asplund, M.: Accounting for convective blue-shifts in the determination of absolute stellar radial velocities. 3D views on cool stellar atmospheres: theory meets observation: Joint Discussion 10, IAU General Assembly, Rio de Janeiro, Brazil, 10. August 2009 - 11. August 2009. 3D views on cool stellar atmospheres: theory meets observation, S. 622 - 626 (2009)

Ramírez, I.; Allende Prieto, C.; Lambert, D. L.; Koesterke, L.; Asplund, M.: Granulation across the HR diagram. 3D views on cool stellar atmospheres: theory meets observation: Joint Discussion 10, IAU General Assembly, Rio de Janeiro, Brazil, 10. August 2009 - 11. August 2009. 3D views on cool stellar atmospheres: theory meets observation, S. 618 - 621 (2009)