One- and multi-component models of the upper photosphere based on molecular spectra |
| |
| Authors: | George H Mount Jeffrey L Linsky |
| |
| Institution: | 1. Joint Institute for Laboratory Astrophysics, University of Colorado and National Bureau of Standards, 80302, Boulder, Colo., U.S.A.
|
| |
| Abstract: | Non-LTE synthetic spectra derived from a detailed analysis of the formation of the CN (0, 0) λ13883 Å spectrum are compared with center-limb photoelectric spectra taken at Kitt Peak National Observatory.Kitt Peak National Observatory is operated by the Association of Universities for Research in Astronomy, Inc., under contract with the National Science Foundation. Significant non-LTE effects are found and the Kurucz, Altrock-Cannon, Mount-Linsky II, and HSRA models are compared. We derive a solar carbon abundance of A c =8.30±0.10 for the Mount-Linsky model and A c =8.40±0.10 for the Altrock-Cannon model, compared to the HSRA value of A c =8.55±0.10, assuming a nitrogen abundance of logA N=7.93. In addition we specify the regions of formation for the CN(0, 0) 3883.35 Å bandhead at disc center and limb. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
