Title: Determining the effective temperatures of F-G supergiants from spectroscopic criteria
Authors: Kovtyukh, VV ×
Gorlova, Nadiya
Klochkova, VG #
Issue Date: May-1998
Publisher: Maik nauka/interperiodica publ
Series Title: Astronomy letters-a journal of astronomy and space astrophysics vol:24 issue:3 pages:372-376
Abstract: The ratio of the depths (equivalent widths) of spectral lines is a good indicator of the effective temperature. We derive 23 analytical relations for determining the effective temperatures of F-G supergiants from the depth ratio of lines in the red spectral range. These calibrations are valid for a wide range of surface gravities, microturbulent velocities, and chemical abundances. The effective temperature can be determined with an accuracy higher than 50-80 K by using determinations from several relations. Based on high-resolution CCD spectra, we obtain high-accuracy effective temperatures for six well-studied supergiants. The calibrations are in good agreement with theoretical and empirical temperature scales for F-G supergiants.
ISSN: 1063-7737
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Non-KU Leuven Association publications
× corresponding author
# (joint) last author

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