Fe i line shifts in the optical spectrum of the Sun

Free access article

Issue		Astron. Astrophys. Suppl. Ser. Volume 129, Number 1, April I 1998


Page(s)		41 - 44
DOI		http://dx.doi.org/10.1051/aas:1998173

DOI: 10.1051/aas:1998173

A&A Supplement series, Vol. 129, April I 1998, 41-44

Received August 5; accepted September 17, 1997

FeI line shifts in the optical spectrum of the Sun

C. Allende Prieto - R.J. Garcıa López

Send offprint request: C. Allende Prieto (callende@iac.es)
Instituto de Astrofísica de Canarias, E-38200 La Laguna, Tenerife, Spain

Abstract:

New improvements in the measurement of both the optical solar spectrum and laboratory wavelengths for lines of neutral iron are combined to extract central wavelength shifts for 1446 lines observed in the Sun. This provides the largest available database of accurate solar wavelengths useful as a reference for comparison with other solar-type stars. It is shown how the velocity shifts correlate with line strength, approaching a constant value, close to zero, for lines with equivalent widths larger than 200 mÅ.

keywords: convection -- atlases -- Sun: photosphere -- stars: atmospheres

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