THE SPECTRAL ENERGY DISTRIBUTIONS OF z ~ 8 GALAXIES FROM THE IRAC ULTRA DEEP FIELDS: EMISSION LINES, STELLAR MASSES, AND SPECIFIC STAR FORMATION RATES AT 650 MYR

Using new ultradeep Spitzer/InfraRed Array Camera (IRAC) photometry from the IRAC Ultra Deep Field program, we investigate the stellar populations of a sample of 63 Y-dropout galaxy candidates at z ~ 8, only 650 Myr after the big bang. The sources are selected from HST/ACS + WFC3/IR data over the Hu...

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Published in:Astrophysical journal. Letters 2013-11, Vol.777 (2), p.1-6
Main Authors: Labbe, I, Oesch, P A, Bouwens, R J, Illingworth, G D, Magee, D, Gonzalez, V, Carollo, C M, Franx, M, TRENTI, M, van Dokkum, P G, STIAVELLI, M
Format: Article
Language:English
Subjects:
Arrays
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
CAMERAS
DENSITY
DEPTH
Emission
ENERGY SPECTRA
FIELD EMISSION
GALAXIES
Infrared
MASS
RED SHIFT
Spectral emissivity
Spectral energy distribution
STARS
Stellar mass
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container_issue 2
container_start_page 1
container_title Astrophysical journal. Letters
container_volume 777
creator Labbe, I
Oesch, P A
Bouwens, R J
Illingworth, G D
Magee, D
Gonzalez, V
Carollo, C M
Franx, M
TRENTI, M
van Dokkum, P G
STIAVELLI, M
description Using new ultradeep Spitzer/InfraRed Array Camera (IRAC) photometry from the IRAC Ultra Deep Field program, we investigate the stellar populations of a sample of 63 Y-dropout galaxy candidates at z ~ 8, only 650 Myr after the big bang. The sources are selected from HST/ACS + WFC3/IR data over the Hubble Ultra Deep Field (HUDF), two HUDF parallel fields, and wide area data over the CANDELS/GOODS-South. Correcting the spectral energy distribution for the contribution of emission lines lowers the average best-fit stellar masses and mass-to-light ratios by ~3, decreasing the integrated stellar mass density to [rho][sup *](z=8, MUV
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subjects Arrays
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
CAMERAS
DENSITY
DEPTH
Emission
ENERGY SPECTRA
FIELD EMISSION
GALAXIES
Infrared
MASS
RED SHIFT
Spectral emissivity
Spectral energy distribution
STARS
Stellar mass
title THE SPECTRAL ENERGY DISTRIBUTIONS OF z ~ 8 GALAXIES FROM THE IRAC ULTRA DEEP FIELDS: EMISSION LINES, STELLAR MASSES, AND SPECIFIC STAR FORMATION RATES AT 650 MYR
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