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Binary interactions and UV photometry on photometric redshift

Published online by Cambridge University Press:  13 April 2010

F. Zhang ,
L. Li  and
Z. Han
F. Zhang
Affiliation:
National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, PO Box 110, Kunming, Yunnan Province 650011, China email: zhangfh@ynao.ac.cn
L. Li
Affiliation:
National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, PO Box 110, Kunming, Yunnan Province 650011, China email: zhangfh@ynao.ac.cn
Z. Han
Affiliation:
National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, PO Box 110, Kunming, Yunnan Province 650011, China email: zhangfh@ynao.ac.cn
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Abstract

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Using the Hyperz code (Bolzonella et al. 2000) we present photometric redshift estimates for a random sample of galaxies selected from the SDSS/DR7 and GALEX/DR4, for which spectroscopic redshifts are also available.

We confirm that the inclusion of ultraviolet photometry improves the accuracy of photo-zs for those galaxies with g* – r* ≤ 0.7 and zspec ≤ 0.2. We also address the problem of how binary interactions can affect photo-z estimates, and find that their effect is negligible.

Keywords

Galaxies: distances and redshifts – Galaxies: fundamental parameters – binary: general – ultraviolet: galaxies
Type
Poster Papers
Information
Proceedings of the International Astronomical Union , Volume 5 , Symposium S262: Stellar Populations – Planning for the Next Decade , August 2009 , pp. 452 - 453
Copyright
Copyright © International Astronomical Union 2010

References

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