Skip to main content Accessibility help

The Solar Photospheric Nitrogen Abundance: Determination with 3D and 1D Model Atmospheres

  • E. Maiorca (a1), E. Caffau (a2), P. Bonifacio (a2) (a3) (a4), M. Busso (a1) (a5), R. Faraggiana (a6), M. Steffen (a7), H.-G. Ludwig (a2) (a3) and I. Kamp (a8)...


We present a new determination of the solar nitrogen abundance making use of 3D hydrodynamical modelling of the solar photosphere, which is more physically motivated than traditional static 1D models. We selected suitable atomic spectral lines, relying on equivalent width measurements already existing in the literature. For atmospheric modelling we used the co 5 bold 3D radiation hydrodynamics code. We investigated the influence of both deviations from local thermodynamic equilibrium (non-LTE effects) and photospheric inhomogeneities (granulation effects) on the resulting abundance. We also compared several atlases of solar flux and centre-disc intensity presently available. As a result of our analysis, the photospheric solar nitrogen abundance is A(N) = 7.86 ± 0.12.


Corresponding author

I Corresponding author. Email:


Hide All
Allende Prieto, C., Lambert, D. L. & Asplund, M., 2001, ApJ, 556, L63
Asplund, M., Grevesse, N., Sauval, A. J., Allende Prieto, C. & Kiselman, D., 2004, A&A, 417, 751
Asplund, M., Grevesse, N. & Sauval, A. J., 2005, ASPC, 336, 25
Aufdenberg, J. P., Ludwig, H.-G. & Kervella, P., 2005, ApJ, 633, 424
Basu, S. & Antia, H. M., 2008, PhR, 457, 217
Biémont, E., Froese Fischer, C., Godefroid, M.,Vaeck, N. & Hibbert, A., 1990, in Proc. 3rd International Colloquium of the Royal Netherlands Academy of Arts and Sciences, Ed. Hansen J. E. (Amsterdam: North–Holland), 59
Caffau, E. & Ludwig, H.-G., 2007, A&A, 467, L11
Caffau, E., Bonifacio, P., Faraggiana, R., François, P., Gratton, R. G. & Barbieri, M., 2005, A&A, 441, 533
Caffau, E., Ludwig, H.-G., Steffen, M., Ayres, T. R., Bonifacio, P., Cayrel, R., Freytag, B. & Plez, B., 2008, A&A, 488, 1031
Castelli, F., 2005, MmSAI, 8, 44
Castelli, F. & Kurucz, R. L., 2003, IAUS, 210, A20
Delbouille, L., Roland, G. & Neven, L., 1973, Atlas photometrique du spectre solaire de λ3000 a λ10 000 (Liege: Universite de Liege, Institut d'Astrophysique)
Delbouille, L., Roland, G., Brault, J. & Testerman, L., 1981, Photometric Atlas of the Solar Spectrum from 1850 to 10 000 cm−1,
Drawin, H. W., 1969, ZPhy, 225, 483
Freytag, B., Steffen, M. & Dorch, B., 2002, AN, 323, 213
Freytag, B., Steffen, M., Wedemeyer-Böhm, S. & Ludwig, H.-G., 2003, CO5BOLD User Manual,
Grevesse, N., Lambert, D. L., Sauval, A. J., van Dishoeck, E. F., Farmer, C. B. & Norton, R. H., 1990, A&A, 232, 225
Grevesse, N. & Sauval, A. J., 1998, SSRv, 85, 161
Holweger, H., 1967, ZA, 65, 365
Holweger, H. & Müller, E. A., 1974, SoPh, 39, 19
Kurucz, R., 1993a, ATLAS9 Stellar Atmosphere Programs and 2 km/s grid (Cambridge, Mass.: Smithsonian Astrophysical Observatory)
Kurucz, R., 1993b, SYNTHE Spectrum Synthesis Programs and Line Data (Cambridge, Mass.: Smithsonian Astrophysical Observatory)
Kurucz, R. L., 2005a, MSAIS, 8, 189
Kurucz, R. L., 2005b, MSAIS, 8, 14
Neckel, H. & Labs, D., 1984, SoPh, 90, 205
Rentzsch-Holm, I., 1996, A&A, 305, 275
Sbordone, L., 2005, MSAIS, 8, 61
Sbordone, L., Bonifacio, P., Castelli, F. & Kurucz, R. L., 2004, MSAIS, 5, 93
Steenbock, W. & Holweger, H., 1984, A&A, 130, 319
Wedemeyer, S., Freytag, B., Steffen, M., Ludwig, H.-G. & Holweger, H., 2004, A&A, 414, 1121



Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed