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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
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

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 (T eff 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
Copyright
Copyright © Kluwer 1995 

References

de Boer, K.S., Heber, U., Richtler, T. 1988, A&A 202, 113 Google Scholar
Dreizler, S., Heber, U., Moehler, S., de Boer, K.S., et al, 1990a, A&A 235, 234 (Pap. III) Heber, U., 1986, A&A 155, 33 Google Scholar
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
Theissen, A., Moehler, S., Heber, U., Schmidt, J.H.K., de Boer, K.S., 1995, A&A (Paper V) Google Scholar

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