Observing Convection: FeI Lineshifts in the Central Intensity Spectrum of the Sun

Details Observing Convection: FeI Lineshifts in the Central Intensity Spectrum of the Sun Observing Convection: FeI Lineshifts in the Central Intensity Spectrum of the Sun

Oct 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aas...196.4905h&link_type=abstract

American Astronomical Society, 196th AAS Meeting, #49.05; Bulletin of the American Astronomical Society, Vol. 32, p.1283

Astronomy and Astrophysics

Astronomy

Scientific paper

The central intensity spectrum of the Sun has been used to determine the convective line core shifts for 1112 FeI lines. The distributions of the line core shifts with respect to wavelength, excitation energy and line depth provide insight into the convective velocities within the solar photosphere. The FeI distributions in the visible have been compared with previous work on the Solar Flux spectrum to investigate the effects of limb darkening . The impact of variations in continuous opacity on the shapes of these distributions is also discussed. When the line core shift distributions are examined clear evidence of a dependence on line strength is found at all wavelengths, and sensitivities to wavelength are found at shorter wavelengths for FeI. Atmospheric modeling has been done to determine the corresponding physical depths of formation for a variety of simulated lines at different wavelengths and strengths. The combination of the line core shift distributions with these models allow for an approximate reconstruction of the velocity structure for the Solar photosphere and a more thorough examination of the noted dependencies.

Affiliated with

Also associated with

No associations

Rating

Observing Convection: FeI Lineshifts in the Central Intensity Spectrum of the Sun does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Observing Convection: FeI Lineshifts in the Central Intensity Spectrum of the Sun, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Observing Convection: FeI Lineshifts in the Central Intensity Spectrum of the Sun will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1767546