TY - JOUR
T1 - The FourStar galaxy evolution survey (ZFOURGE)
T2 - Ultraviolet to far-infrared catalogs, medium-bandwidth photometric redshifts with improved accuracy, stellar masses, and confirmation of quiescent galaxies to z ~ 3.5
AU - Straatman, Caroline M S
AU - Spitler, Lee R.
AU - Quadri, Ryan F.
AU - Labbé, Ivo
AU - Glazebrook, Karl
AU - Persson, S. Eric
AU - Papovich, Casey
AU - Tran, Kim Vy H
AU - Brammer, Gabriel B.
AU - Cowley, Michael
AU - Tomczak, Adam
AU - Nanayakkara, Themiya
AU - Alcorn, Leo
AU - Allen, Rebecca
AU - Broussard, Adam
AU - Van Dokkum, Pieter
AU - Forrest, Ben
AU - Van Houdt, Josha
AU - Kacprzak, Glenn G.
AU - Kawinwanichakij, Lalitwadee
AU - Kelson, Daniel D.
AU - Lee, Janice
AU - McCarthy, Patrick J.
AU - Mehrtens, Nicola
AU - Monson, Andrew
AU - Murphy, David
AU - Rees, Glen
AU - Tilvi, Vithal
AU - Whitaker, Katherine E.
PY - 2016/10/10
Y1 - 2016/10/10
N2 - The FourStar galaxy evolution survey (ZFOURGE) is a 45 night legacy program with the FourStar near-infrared camera on Magellan and one of the most sensitive surveys to date. ZFOURGE covers a total of 400 arcmin2 in cosmic fields CDFS, COSMOS and UDS, overlapping CANDELS. We present photometric catalogs comprising >70,000 galaxies, selected from ultradeep K s-band detection images (25.5-26.5 AB mag, 5σ, total), and >80% complete to K s < 25.3-25.9 AB. We use 5 near-IR medium-bandwidth filters (J 1, J 2, J 3, H s, H l) as well as broad-band K s at 1.05-2.16 μm to 25-26 AB at a seeing of ∼0.″5. Each field has ancillary imaging in 26-40 filters at 0.3-8 μm. We derive photometric redshifts and stellar population properties. Comparing with spectroscopic redshifts indicates a photometric redshift uncertainty σ z = 0.010, 0.009, and 0.011 in CDFS, COSMOS, and UDS. As spectroscopic samples are often biased toward bright and blue sources, we also inspect the photometric redshift differences between close pairs of galaxies, finding σ z,pairs = 0.01-0.02 at 1 < z < 2.5. We quantify how σ z,pairs depends on redshift, magnitude, spectral energy distribution type, and the inclusion of FourStar medium bands. σ z,pairs is smallest for bright, blue star-forming samples, while red star-forming galaxies have the worst σ z,pairs. Including FourStar medium bands reduces σ z,pairs by 50% at 1.5 < z < 2.5. We calculate star formation rates (SFRs) based on ultraviolet and ultradeep far-IR Spitzer/MIPS and Herschel/PACS data. We derive rest-frame U - V and V - J colors, and illustrate how these correlate with specific SFR and dust emission to z = 3.5. We confirm the existence of quiescent galaxies at z ∼ 3, demonstrating their SFRs are suppressed by > ×15.
AB - The FourStar galaxy evolution survey (ZFOURGE) is a 45 night legacy program with the FourStar near-infrared camera on Magellan and one of the most sensitive surveys to date. ZFOURGE covers a total of 400 arcmin2 in cosmic fields CDFS, COSMOS and UDS, overlapping CANDELS. We present photometric catalogs comprising >70,000 galaxies, selected from ultradeep K s-band detection images (25.5-26.5 AB mag, 5σ, total), and >80% complete to K s < 25.3-25.9 AB. We use 5 near-IR medium-bandwidth filters (J 1, J 2, J 3, H s, H l) as well as broad-band K s at 1.05-2.16 μm to 25-26 AB at a seeing of ∼0.″5. Each field has ancillary imaging in 26-40 filters at 0.3-8 μm. We derive photometric redshifts and stellar population properties. Comparing with spectroscopic redshifts indicates a photometric redshift uncertainty σ z = 0.010, 0.009, and 0.011 in CDFS, COSMOS, and UDS. As spectroscopic samples are often biased toward bright and blue sources, we also inspect the photometric redshift differences between close pairs of galaxies, finding σ z,pairs = 0.01-0.02 at 1 < z < 2.5. We quantify how σ z,pairs depends on redshift, magnitude, spectral energy distribution type, and the inclusion of FourStar medium bands. σ z,pairs is smallest for bright, blue star-forming samples, while red star-forming galaxies have the worst σ z,pairs. Including FourStar medium bands reduces σ z,pairs by 50% at 1.5 < z < 2.5. We calculate star formation rates (SFRs) based on ultraviolet and ultradeep far-IR Spitzer/MIPS and Herschel/PACS data. We derive rest-frame U - V and V - J colors, and illustrate how these correlate with specific SFR and dust emission to z = 3.5. We confirm the existence of quiescent galaxies at z ∼ 3, demonstrating their SFRs are suppressed by > ×15.
KW - cosmology: observations
KW - galaxies: evolution
KW - galaxies: high-redshift
KW - infrared: galaxies
UR - http://www.scopus.com/inward/record.url?scp=84991086739&partnerID=8YFLogxK
U2 - 10.3847/0004-637X/830/1/51
DO - 10.3847/0004-637X/830/1/51
M3 - Article
AN - SCOPUS:84991086739
SN - 0004-637X
VL - 830
SP - 1
EP - 34
JO - Astrophysical Journal
JF - Astrophysical Journal
IS - 1
M1 - 51
ER -