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Fe I line asymmetries and shifts caused by pressure broadening

  • Part III Solar magnetism and large-scale flows
  • Conference paper
  • First Online:
The Sun and Cool Stars: activity, magnetism, dynamos

Part of the book series: Lecture Notes in Physics ((LNP,volume 380))

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Abstract

In order to test the validity of the usual neglect of pressure line shifts in investigations of Fe I line asymmetries and shifts, we calculated synthetic line bisectors and shifts of 96 moderate and weak photospheric lines, taking into account both hydrogen- and electron-impact shifts and neglecting the velocity fields. Absolute pressure line shifts obtained are less than or appr. equal to 50 m/s and the largest relative shifts along the bisectors are about 40m/s. We found pronounced dependences of both shifts and bisectors on the energy of the upper level in transitions and on the transition array.

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Authors and Affiliations

  1. Astronomical Observatory, Volgina 7, 11050, Belgrade, Yugoslavia

    V. Kršljanin, I. Vince & S. Erkapić

Authors
  1. V. Kršljanin
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  2. I. Vince
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  3. S. Erkapić
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Editor information

I. Tuominen D. Moss G. Rüdiger

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© 1991 Springer-Verlag

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Kršljanin, V., Vince, I., Erkapić, S. (1991). Fe I line asymmetries and shifts caused by pressure broadening. In: Tuominen, I., Moss, D., Rüdiger, G. (eds) The Sun and Cool Stars: activity, magnetism, dynamos. Lecture Notes in Physics, vol 380. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-53955-7_141

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  • DOI: https://doi.org/10.1007/3-540-53955-7_141

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-53955-1

  • Online ISBN: 978-3-540-46483-9

  • eBook Packages: Springer Book Archive

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