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Intensity ratios of spectral cores Ca ii K to H across a sunspot (1982)

Yun, H. S. ; Beebe, H. A.

Springer

Solar physics 78 (1982), S. 347-349

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ISSN: 1573-093X

Source: Springer Online Journal Archives 1860-2000

Topics: Physics

Notes: Abstract Ratios of the intensity in the core of the Ca ii K line to the intensity of the H line core across a sunspot (SPO 5007) were determined from measurements of spectra made simultaneously with the Echelle spectrograph at the Vacuum Tower Telescope, Sacramento Peak Observatory. The measured values averaged over the neighboring nonspot region, the penumbra and the umbra are found to be 1.13 ± 0.04, 1.19 ± 0.05, and 1.25 ± 0.03, respectively.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00151613

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