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New Model Atmospheres: Testing the Solar Spectrum in the UV

  • Lino H. Rodríguez-Merino
  • Octavio Cardona
  • Emanuele Bertone
  • Miguel Chávez
  • Alberto Buzzoni
Conference paper
Part of the Astrophysics and Space Science Proceedings book series (ASSSP)

Summary

We present preliminary results on the calculation of synthetic spectra obtained with the stellar model atmospheres developed by Cardona, Crivellari, and Simonneau. These new models have been used as input within the Synthe series of codes developed by Kurucz. As a first step we have tested if Synthe is able to handle these models which go down to logτRoss= -13. We have successfully calculated a synthetic solar spectrum in the wavelength region 2000–4500 Å at high resolution (R=522 000). Within this initial test we have found that layers at optical depths with logτRoss< -7 significantly affect the mid-UV properties of a synthetic spectrum computed from a solar model. We anticipate that these new extended models will be a valuable tool for the analysis of UV stellar light arising from the outermost layers of the atmospheres.

Keywords

Optical Depth Model Atmosphere Solar Model Stellar Atmosphere Synthetic Spectrum 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Buzzoni, A. 1995, ApJS, 98, 69CrossRefADSGoogle Scholar
  2. Crivellari, L., & Simonneau, E. 1994, ApJ, 429, 331CrossRefADSGoogle Scholar
  3. Crivellari, L., Cardona, O., & Simonneau, E. 2002, Astrophysics, 45, 480CrossRefADSGoogle Scholar
  4. Gustafsson, B., Bell, R. A., Eriksson, K., & Nordlund, A. 1975, A&A, 42, 407ADSGoogle Scholar
  5. Holweger, H. 1970, A&A, 4, 11ADSGoogle Scholar
  6. Hubeny, I., & Lanz, T. 1992, A&A, 262, 501ADSGoogle Scholar
  7. Kurucz, R. L. 1992, Revista Mexicana de Astronomia y Astrofisica, 23, 45ADSGoogle Scholar
  8. Kurucz, R. L. 1993a, SYNTHE Spectrum Synthesis Programs and Line Data. Kurucz CD-ROM No. 18 (Cambridge, Mass.: Smithsonian Astrophysical Observatory)Google Scholar
  9. Kurucz, R. L. 1993b, ATLAS9 Stellar Atmosphere Programs and 2 km/s grid. Kurucz CD-ROM No. 13. (Cambridge, Mass.: Smithsonian Astrophysical Observatory)Google Scholar
  10. Kurucz, R. L., Furenlid, I., Brault, L., & Testerman, L. 1984, Solar flux atlas from 296 to 1300 nm, National Solar Observatory Atlas, Sunspot (Nat. Sol. Obs.: New Mexico).Google Scholar
  11. Rodríguez-Merino, L. H., Chavez, M., Bertone, E., & Buzzoni, A. 2005, ApJ, 626, 411CrossRefADSGoogle Scholar
  12. Simonneau, E., & Crivellari, L. 1993, ApJ, 409, 830CrossRefADSGoogle Scholar

Copyright information

© Springer-Verlag New York 2009

Authors and Affiliations

  • Lino H. Rodríguez-Merino
    • 1
  • Octavio Cardona
    • 1
  • Emanuele Bertone
    • 1
  • Miguel Chávez
    • 1
    • 2
  • Alberto Buzzoni
    • 3
  1. 1.Instituto Nacional de Astrofísica, Óptica y ElectrÓnicaTonantzintlaMéxico
  2. 2.IAM- Instituto de Astronomía y Meteorología Universidad de GuadalajaraVallarta 2602México
  3. 3.INAF-Osservatorio Astronomico di BolognaVia Ranzani 1Italy

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