UV & U-band luminosity functions from CLAUDS and HSC-SSP -- I. Using four million galaxies to simultaneously constrain the very faint and bright regimes to $z\sim 3$

Abstract

We constrain the rest-frame FUV (1546Å), NUV (2345Å) and U-band (3690Å) luminosity functions (LFs) and luminosity densities (LDs) with unprecedented precision from $z\sim 0.2$ to $z\sim 3$ (FUV, NUV) and $z\sim 2$ (U-band). Our sample of over 4.3 million galaxies, selected from the CFHT Large Area $U$-band Deep Survey (CLAUDS) and HyperSuprime-Cam Subaru Strategic Program (HSC-SSP) data lets us probe the very faint regime (down to $M_{\mathrm{FUV}},M_{\mathrm{NUV}},M_{\mathrm{U}}\simeq -15$ at low redshift) while simultaneously detecting very rare galaxies at the bright end down to comoving densities $<10^{-5}$ Mpc${}^{-3}$. Our FUV and NUV LFs are well fitted by single Schechter functions, with faint-end slopes that are very stable up to $z\sim 2$. We confirm, but self-consistently and with much better precision than previous studies, that the LDs at all three wavelengths increase rapidly with lookback time to $z\sim 1$, and then much more slowly at $1<z<2$--$3$. Evolution of the FUV and NUV LFs and LDs at $z<1$ is driven almost entirely by the fading of the characteristic magnitude, $M_{UV}^{\star }$, while at $z>1$ it is due to the evolution of both $M_{UV}^{\star }$ and the characteristic number density ${\varphi }_{UV}^{\star }$. In contrast, the U-band LF has an excess of faint galaxies and is fitted with a double-Schechter form; $M_{\mathrm{U}}^{\star }$, both ${\varphi }_{\mathrm{U}}^{\star }$ components, and the bright-end slope evolve throughout $0.2<z<2$, while the faint-end slope is constant over at least the measurable $0.05<z<0.6$. We present tables of our Schechter parameters and LD measurements that can be used for testing theoretical galaxy evolution models and forecasting future observations.

18 pages, 11 figures (26 pages, 18 figures including the Appendix). Accepted for publication in MNRAS. Version to be published

References in corpus (26)

• Cosmic Star Formation History
• The Cosmic Evolution Survey (COSMOS) -- Overview
• UV Luminosity Functions at redshifts z~4 to z~10: 10000 Galaxies from HST Legacy Fields
• COSMOS Photometric Redshifts with 30-bands for 2-deg2
• zCOSMOS: A Large VLT/VIMOS redshift survey covering 0 < z < 3 in the COSMOS field
• Subaru Deep Survey V. A Census of Lyman Break Galaxies at z=4 and 5 in the Subaru Deep Fields: Photometric Properties
• The MOSFIRE Deep Evolution Field (MOSDEF) Survey: Rest-Frame Optical Spectroscopy for ~1500 H-Selected Galaxies at 1.37 < z < 3.8
• Weak Gravitational Lensing with COSMOS: Galaxy Selection and Shape Measurements
• The galaxy stellar mass function at 3.5<z<7.5 in the CANDELS/UDS, GOODS-South, and HUDF fields
• The high redshift galaxy population in hierarchical galaxy formation models
• Dos and don'ts of reduced chi-squared
• The luminosity function, halo masses and stellar masses of luminous Lyman-break galaxies at redshifts 5<z<6
• The galaxy-halo connection from a joint lensing, clustering and abundance analysis in the CFHTLenS/VIPERS field
• Evolution of the Luminosity Function, Star Formation Rate, Morphology and Size of Star-forming Galaxies Selected at Rest-frame 1500A and 2800A
• The Evolution of the UV Luminosity Function from z ~ 0.75 to z ~ 2.5 using HST ERS WFC3/UVIS Observations
• The Complete Calibration of the Color-Redshift Relation (C3R2) Survey: Analysis and Data Release 2
• The Luminosity Function at z~8 from 97 Y-band dropouts: Inferences About Reionization
• The CFHT Large Area U-band Deep Survey (CLAUDS)
• The 0.1<z<1.65 evolution of the bright end of the [OII] luminosity function
• Escape fraction of ionizing photons from galaxies at z=0--6
• Differential Evolution of the UV Luminosity Function of Lyman Break Galaxies from z~5 to 3
• Missing Stellar Mass in SED Fitting: Spatially Unresolved Photometry can Underestimate Galaxy Masses
• Keck Deep Fields. III. Luminosity-dependent Evolution of the Ultraviolet Luminosity and Star Formation Rate Densities at z~4, 3, and 2
• The Very Faint End of the UV Luminosity Function over Cosmic Time: Constraints from the Local Group Fossil Record
• Luminosity Functions of Lyman-Break Galaxies at z~4 and 5 in the Subaru Deep Field
• Infrared luminosity functions based on 18 mid-infrared bands: revealing cosmic star formation history with AKARI and Hyper Suprime-Cam

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