The Fourstar Galaxy Evolution Survey (ZFOURGE): Ultraviolet to Far-infrared Catalogs, Medium-bandwidth Photometric Redshifts with Improved Accuracy, Stellar Masses, and Confirmation of Quiescent Galaxies to z ∼ 3.5
Article
Article Title | The Fourstar Galaxy Evolution Survey (ZFOURGE): Ultraviolet to Far-infrared Catalogs, Medium-bandwidth Photometric Redshifts with Improved Accuracy, Stellar Masses, and Confirmation of Quiescent Galaxies to z ∼ 3.5 |
---|---|
ERA Journal ID | 1057 |
Article Category | Article |
Authors | Straatman, Caroline M. S., Spitler, Lee R., Quadri, Ryan F., Labbé, Ivo, Glazebrook, Karl, Persson, S. Eric, Papovich, Casey, Tran, Kim-Vy H., Brammer, Gabriel B., Cowley, Michael, Tomczak, Adam, Nanayakkara, Themiya, Alcorn, Leo, Allen, Rebecca, Broussard, Adam, van Dokkum, Pieter, Forrest, Ben, van Houdt, Josha, Kacprzak, Glenn G., Kawinwanichakij, Lalitwadee, Kelson, Daniel D., Lee, Janice, McCarthy, Patrick J., Mehrtens, Nicola, Monson, Andrew, Murphy, David, Rees, Glen, Tilvi, Vithal and Whitaker, Katherine E. |
Journal Title | The Astrophysical Journal: an international review of astronomy and astronomical physics |
Journal Citation | 830 (1), pp. 1-34 |
Article Number | 51 |
Number of Pages | 34 |
Year | 2016 |
Publisher | IOP Publishing |
Place of Publication | United States |
ISSN | 0004-637X |
1538-4357 | |
Digital Object Identifier (DOI) | https://doi.org/10.3847/0004-637X/830/1/51 |
Web Address (URL) | https://iopscience.iop.org/article/10.3847/0004-637X/830/1/51 |
Abstract | 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. |
Keywords | cosmology: observations; galaxies: evolution; galaxies: high-redshift; infrared: galaxies |
Contains Sensitive Content | Does not contain sensitive content |
Public Notes | For access to this article, please click on the URL link provided. |
Funder | National Science Foundation |
Byline Affiliations | Leiden University, Netherlands |
Australian Astronomical Observatory, Australia | |
Macquarie University | |
Texas A&M University, United States | |
Swinburne University of Technology | |
Carnegie Observatories Pasadena, United States | |
Space Telescope Science Institute, United States | |
Yale University, United States | |
Chaffey College, United States | |
University of Massachusetts, United States |
https://research.usq.edu.au/item/w45x7/the-fourstar-galaxy-evolution-survey-zfourge-ultraviolet-to-far-infrared-catalogs-medium-bandwidth-photometric-redshifts-with-improved-accuracy-stellar-masses-and-confirmation-of-quiescent-galaxies
37
total views1
total downloads2
views this month0
downloads this month