TY - JOUR
T1 - UV to IR luminosities and dust attenuation determined from ∼4000 K-selected galaxies at 1 < z < 3 in the ZFOURGE survey
AU - Forrest, Ben
AU - Tran, Kim Vy H
AU - Tomczak, Adam R.
AU - Broussard, Adam
AU - Labbé, Ivo
AU - Papovich, Casey
AU - Kriek, Mariska
AU - Allen, Rebecca J.
AU - Cowley, Michael
AU - Dickinson, Mark
AU - Glazebrook, Karl
AU - Van Houdt, Josha
AU - Inami, Hanae
AU - Kacprzak, Glenn G.
AU - Kawinwanichakij, Lalitwadee
AU - Kelson, Daniel
AU - McCarthy, Patrick J.
AU - Monson, Andrew
AU - Morrison, Glenn
AU - Nanayakkara, Themiya
AU - Persson, S. Eric
AU - Quadri, Ryan F.
AU - Spitler, Lee R.
AU - Straatman, Caroline
AU - Tilvi, Vithal
PY - 2016/2/20
Y1 - 2016/2/20
N2 - We build a set of composite galaxy spectral energy distributions (SEDs) by de-redshifting and scaling multi-wavelength photometry from galaxies in the ZFOURGE survey, covering the CDFS, COSMOS, and UDS fields. From a sample of ∼4000 Ks-band selected galaxies, we define 38 composite galaxy SEDs that yield continuous low-resolution spectra (R ∼ 45) over the rest-frame range 0.1-4 μm. Additionally, we include far infrared photometry from the Spitzer Space Telescope and the Herschel Space Observatory to characterize the infrared properties of our diverse set of composite SEDs. From these composite SEDs we analyze the rest-frame UVJ colors, as well as the ratio of IR to UV light (IRX) and the UV slope (β) in the IRX-β dust relation at 1 < z < 3. Blue star-forming composite SEDs show IRX and β values consistent with local relations; dusty star-forming galaxies have considerable scatter, as found for local IR bright sources, but on average appear bluer than expected for their IR fluxes. We measure a tight linear relation between rest-frame UVJ colors and dust attenuation for star-forming composites, providing a direct method for estimating dust content from either (U - V) or rest-frame colors for star-forming galaxies at intermediate redshifts.
AB - We build a set of composite galaxy spectral energy distributions (SEDs) by de-redshifting and scaling multi-wavelength photometry from galaxies in the ZFOURGE survey, covering the CDFS, COSMOS, and UDS fields. From a sample of ∼4000 Ks-band selected galaxies, we define 38 composite galaxy SEDs that yield continuous low-resolution spectra (R ∼ 45) over the rest-frame range 0.1-4 μm. Additionally, we include far infrared photometry from the Spitzer Space Telescope and the Herschel Space Observatory to characterize the infrared properties of our diverse set of composite SEDs. From these composite SEDs we analyze the rest-frame UVJ colors, as well as the ratio of IR to UV light (IRX) and the UV slope (β) in the IRX-β dust relation at 1 < z < 3. Blue star-forming composite SEDs show IRX and β values consistent with local relations; dusty star-forming galaxies have considerable scatter, as found for local IR bright sources, but on average appear bluer than expected for their IR fluxes. We measure a tight linear relation between rest-frame UVJ colors and dust attenuation for star-forming composites, providing a direct method for estimating dust content from either (U - V) or rest-frame colors for star-forming galaxies at intermediate redshifts.
UR - http://www.scopus.com/inward/record.url?scp=84959366825&partnerID=8YFLogxK
UR - http://purl.org/au-research/grants/arc/FT140100933
U2 - 10.3847/2041-8205/818/2/L26
DO - 10.3847/2041-8205/818/2/L26
M3 - Article
AN - SCOPUS:84959366825
SN - 2041-8205
VL - 818
SP - 1
EP - 6
JO - Astrophysical Journal Letters
JF - Astrophysical Journal Letters
IS - 2
M1 - L26
ER -