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A 22μm selected sample from WISE and SDSS spectra catalogs

Published online by Cambridge University Press:  21 March 2013

Xiao-Qing Wen  and
Hong-Wei Yin
Xiao-Qing Wen
Affiliation:
School of Science, Nanchang University, Nanchang 330031, P.R. China. National Astronomical Observatories, Chinese Academy of Sciences, A20 Datun Road, Beijing 100012, P.R. China. University of Chinese Academy of Sciences, Beijing 100049, P.R. China. email: [email protected]
Hong-Wei Yin
Affiliation:
School of Science, Nanchang University, Nanchang 330031, P.R. China.
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Abstract

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We cross-matched Wide-field Infrared Survey Explorer sources with the Sloan Digital Sky Survey galaxy spectroscopic catalog within 6 arcsec to produce 182798 galaxies with 22 μm signal to noise > 3. The different redshift bins of the sample show that the rest-frame 22μm luminosities increase with redshift, for rest-frame 22μm luminosities in the range of 106 − 1012 L⊙. The infrared sample is located in the blue sequence. The Seyfert fraction increases with redshift more obviously in the IR sample than in an optical control sample. The Seyfert fraction increases significantly with increasing rest-frame 22 μm luminosity below 1011 L⊙.

Keywords

infrared: galaxies — galaxies: fundamental parameters — galaxies: Seyfert
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S292: Molecular Gas, Dust, and Star Formation in Galaxies , August 2012 , pp. 376
Copyright
Copyright © International Astronomical Union 2013

References

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