Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984a%26a...135..309m&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 135, no. 2, June 1984, p. 309-312.
Astronomy and Astrophysics
Astrophysics
2
Abundance, Fine Structure, Linear Energy Transfer (Let), Photosphere, Solar Spectra, Titanium, Anisotropy, Damping, Kinetic Energy, Line Spectra, Van Der Waals Forces
Scientific paper
An LTE analysis is made of the solar lines of multiplet 38 of Ti I. Their profiles are synthesized at the center of the disk, assuming the model atmosphere of Holweger and Müller (1974) and the oscillator strengths of Blackwell et al. (1982). The author finds that the best-fitting solar abundance of titanium is log Ti/H = 5.08 (in the usual scale log NH = 12.0), the enhancement factor to the van der Waals broadening is E ≈ 3, the microturbulence is 0.0 km s-1 ⪉ ζ ⪉ 0.5 km s-1 and the macroturbulence is 1.7 km s-1 ⪉ M ⪉ 1.9 km s-1. It is therefore found that most of the nonthermal broadening is in the macro-limit rather than in the micro-limit. The author also discusses the difficulties of interpretation of equivalent widths and profiles of medium lines.
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