Low Resolution Spectral Templates For Galaxies From 0.2 - 10 microns - AstrophysicsReportar como inadecuado




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Abstract: We built an optimal basis of low resolution templates for galaxies over thewavelength range from 0.2 to 10 $\mu$m using a variant of the algorithmpresented by Budavari et al. 2000. We derived them using eleven bands ofphotometry from the NDWFS, FLAMEX, zBo\-otes and IRAC Shallow surveys for 16033galaxies in the NDWFS Bo\-otes field with spectroscopic redshifts measured bythe AGN and Galaxy Evolution Survey. We also developed algorithms to accuratelydetermine photometric redshifts, K corrections and bolometric luminositiesusing these templates. Our photometric redshifts have an accuracy of$\sigma z-1+z = 0.04$ when clipped to the best 95%. We used these templatesto study the spectral type distribution in the field and to estimate luminosityfunctions of galaxies as a function of redshift and spectral type. Inparticular, we note that the 5-8$\mu$m color distribution of galaxies isbimodal, much like the optical g-r colors.



Autor: R.J. Assef, C.S. Kochanek, M. Brodwin, M.J.I. Brown, N. Caldwell, R.J. Cool, P. Eisenhardt, D. Eisenstein, A.H. Gonzalez, B.T. Ja

Fuente: https://arxiv.org/







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