Using the 1.6um Bump to Study Rest-frame NIR Selected Galaxies at Redshift 2

摘要: We explore the feasibility and limitations of using 1.6um bump as a photometric redshift indicator selection technique use it to study rest-frame H-band galaxy luminosity stellar mass functions at z~2. publicly available Spitzer/IRAC images in GOODS fields find that color IRAC bandpasses alone is comparable completeness contamination BzK selection. shape robust, redshifts are not greatly affected by choice model parameters. Comparison with spectroscopic shows be reliable. create NIR selected catalog galaxies z~2 construct function (SMF). Comparisons other SMFs approximately same but determined shorter wavelengths show good agreement. This agreement suggests bluer does miss significant amount passive galaxies. evidence for downsizing scenario evolution. conclude pointing out potential select high-redshift JWST, whose lambda > 0.6 um coverage will well suited selecting techniques require imaging wavelengths.