The CANDELS/SHARDS Multiwavelength Catalog in GOODS-N: Photometry, Photometric Redshifts, Stellar Masses, Emission-line Fluxes, and Star Formation Rates

August 2019 • 2019ApJS..243...22B

Authors • Barro, Guillermo • Pérez-González, Pablo G. • Cava, Antonio • Brammer, Gabriel • Pandya, Viraj • Eliche Moral, Carmen • Esquej, Pilar • Domínguez-Sánchez, Helena • Alcalde Pampliega, Belen • Guo, Yicheng • Koekemoer, Anton M. • Trump, Jonathan R. • Ashby, Matthew L. N. • Cardiel, Nicolas • Castellano, Marco • Conselice, Christopher J. • Dickinson, Mark E. • Dolch, Timothy • Donley, Jennifer L. • Espino Briones, Néstor • Faber, Sandra M. • Fazio, Giovanni G. • Ferguson, Henry • Finkelstein, Steve • Fontana, Adriano • Galametz, Audrey • Gardner, Jonathan P. • Gawiser, Eric • Giavalisco, Mauro • Grazian, Andrea • Grogin, Norman A. • Hathi, Nimish P. • Hemmati, Shoubaneh • Hernán-Caballero, Antonio • Kocevski, Dale • Koo, David C. • Kodra, Dritan • Lee, Kyoung-Soo • Lin, Lihwai • Lucas, Ray A. • Mobasher, Bahram • McGrath, Elizabeth J. • Nandra, Kirpal • Nayyeri, Hooshang • Newman, Jeffrey A. • Pforr, Janine • Peth, Michael • Rafelski, Marc • Rodríguez-Munoz, Lucia • Salvato, Mara • Stefanon, Mauro • van der Wel, Arjen • Willner, Steven P. • Wiklind, Tommy • Wuyts, Stijn

Abstract • We present a WFC3 F160W (H-band) selected catalog in the CANDELS/GOODS-N field containing photometry from the ultraviolet (UV) to the far-infrared (IR), photometric redshifts, and stellar parameters derived from the analysis of the multiwavelength data. The catalog contains 35,445 sources over the 171 arcmin2 of the CANDELS F160W mosaic. The 5σ detection limits (within an aperture of radius 0.″17) of the mosaic range between H = 27.8, 28.2, and 28.7 in the wide, intermediate, and deep regions, which span approximately 50%, 15%, and 35% of the total area. The multiwavelength photometry includes broadband data from the UV (U band from KPNO and LBC), optical (HST/ACS F435W, F606W, F775W, F814W, and F850LP), near-to-mid IR (HST/WFC3 F105W, F125W, F140W, and F160W; Subaru/MOIRCS Ks; CFHT/Megacam K; and Spitzer/IRAC 3.6, 4.5, 5.8, and 8.0 μm), and far-IR (Spitzer/MIPS 24 μm, HERSCHEL/PACS 100 and 160 μm, SPIRE 250, 350 and 500 μm) observations. In addition, the catalog also includes optical medium-band data (R ∼ 50) in 25 consecutive bands, λ = 500-950 nm, from the SHARDS survey and WFC3 IR spectroscopic observations with the G102 and G141 grisms (R ∼ 210 and 130). The use of higher spectral resolution data to estimate photometric redshifts provides very high, and nearly uniform, precision from z = 0-2.5. The comparison to 1485 good-quality spectroscopic redshifts up to z ∼ 3 yields Δz/(1 + z spec) = 0.0032 and an outlier fraction of η = 4.3%. In addition to the multiband photometry, we release value-added catalogs with emission-line fluxes, stellar masses, dust attenuations, UV- and IR-based star formation rates, and rest-frame colors.


IPAC Authors


Shoubaneh Hemmati

Assistant Scientist