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The Scale Height of Blue Halo subdwarf B Stars

Published online by Cambridge University Press:  07 August 2017

K.S. De Boer ,
A. Theissen ,
U. Heber  and
S. Moehler
K.S. De Boer
Affiliation:
Sternwarte der Univ. Bonn, D-53121 Bonn, and Remeis Sternw. U. Erlangen-Nürnberg, D-96049 Bamberg, and Landessternwarte, Königstuhl, D-69117 Heidelberg
A. Theissen
Affiliation:
Sternwarte der Univ. Bonn, D-53121 Bonn, and Remeis Sternw. U. Erlangen-Nürnberg, D-96049 Bamberg, and Landessternwarte, Königstuhl, D-69117 Heidelberg
U. Heber
Affiliation:
Sternwarte der Univ. Bonn, D-53121 Bonn, and Remeis Sternw. U. Erlangen-Nürnberg, D-96049 Bamberg, and Landessternwarte, Königstuhl, D-69117 Heidelberg
S. Moehler
Affiliation:
Sternwarte der Univ. Bonn, D-53121 Bonn, and Remeis Sternw. U. Erlangen-Nürnberg, D-96049 Bamberg, and Landessternwarte, Königstuhl, D-69117 Heidelberg

Extract

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Numerous blue halo stars have been discovered during the past decade (e.g. the Palomar-Green Survey). Many are horizontal branch type, being HBA, HBB, sdB, or sdO star. The sdB stars (Teff between ≈ 18 000 and ≈ 30 000 K) are the endproducts of evolution in the red-giant phase. This means that the spatial distribution of the sdB stars can be used to get insight in the population nature and in their spatial origin.

Type
Poster Papers
Information
Symposium - International Astronomical Union , Volume 164: Stellar Populations , 1995 , pp. 403
Copyright
Copyright © Kluwer 1995 

References

de Boer, K.S., Heber, U., Richtler, T. 1988, A&A 202, 113 Google Scholar
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Heber, U., Hunger, K., Jonas, G., Kudritzki, R.-P., 1984, A&A 130, 119 Google Scholar
Moehler, S., Richtler, T., de Boer, K.S., Heber, U., et al, 1990a, A&AS 86, 53 (Paper I) Google Scholar
Moehler, S., Heber, U., de Boer, K.S., 1990b, A&A 239, 265 (Paper II) Google Scholar
Theissen, A., Moehler, S., Heber, U., de Boer, K.S., 1993, A&A 273, 524 (Paper IV) Google Scholar
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