A model-independent photometric redshift estimator

被引：0

作者：

Wang, Y ^{[1
]}

Bahcall, N ^{[1
]}

Turner, EL ^{[1
]}

机构：

[1] Princeton Univ Observ, Princeton, NJ 08544 USA

来源：

PHOTOMETRIC REDSHIFTS AND HIGH REDSHIFT GALAXIES | 1999年 / 191卷

关键词：

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We derive a simple empirical photometric redshift estimator using a training set of galaxies with multiband photometry and measured redshifts in the Hubble Deep Field (HDF). This estimator is model-independent; it does not use spectral templates. The dispersion between the estimated redshifts and the spectroscopically measured ones is small the dispersions range from sigma(z) similar or equal to 0.03 to 0.1 for z less than or similar to 2 galaxies, and from sigma(z) similar or equal to 0.14 to 0.25 for z greater than or similar to 2 galaxies. The predictions provided by our empirical redshift estimator agree well with recently measured galaxy redshifts. We illustrate how our empirical redshift estimator can be modified to include flat spectrum galaxies with 1.4 less than or similar to z less than or similar to 2.

引用

页码：25 / 30

页数：6

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