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Metallicity Structures of the Milky Way

Published online by Cambridge University Press:  25 May 2016

Roland Buser  and
Jianxiang Rong
Roland Buser
Affiliation:
Astronomical Institute, University of Basel, Switzerland
Jianxiang Rong
Affiliation:
Astronomy Department, Nanjing University, China

Abstract

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The metallicity-sensitive (U – G) colors from the new homogeneous catalog of photographic RGU data in seven high-latitude fields have been used to determine the larger-scale metallicity distributions of the Galactic population components. For the thick disk, preliminary analysis based on our best structural models provides a mean metallicity 〈[M/H]〉 = −0.6 ± 0.3dex and a marginal vertical metallicity gradient ≈ −0.1dex/kpc. The observed color distributions are further consistent with the (old) thin disk having mean abundance 〈[M/H]〉 = −0.3 ± 0.2dex and abundance gradient ∂[M/H]/∂z = −0.6dex/kpc.

Information

Type
Chapter 5: How Did the Milky Way Form?
Information
Symposium - International Astronomical Union , Volume 169: Unsolved Problems of the Milky Way , 1996 , pp. 427 - 428
Copyright
Copyright © Kluwer 1996 

References

1. Buser, R. and Rong, J.X. 1994, this volume CrossRefGoogle Scholar
2. Buser, R., Karaali, S., Topaktas, L., Karatas, Y. 1994, A&AS (in press) Google Scholar
3. Buser, R. and Fenkart, R.P. 1990, A&A 239, 243 Google Scholar
4. Trefzger, Ch.F., Pel, J.W., Gabi, S. 1994, A&A (in press) Google Scholar
5. Majewski, S.R. 1993, ARA&A 31, 575 Google Scholar