CONCERTO at APEX -- On-sky performance in continuum

Abstract

We present the data-processing algorithms and the performance of CONCERTO (CarbON CII line in post-rEionisation and ReionisaTiOn epoch) in continuum by analysing the data from the commissioning and scientific observations. The beam pattern is characterized by an effective FWHM of 31.9 $\pm$ 0.6" and 34.4 $\pm$ 1.0" for high-frequency (HF) and low-frequency (LF) bands. The main beam is slightly elongated with a mean eccentricity of 0.46. Two error beams of $\sim$65" and $\sim$130" are characterized, enabling the estimate of a main beam efficiency of $\sim$0.52. The field of view is accurately reconstructed and presents coherent distortions between the HF and LF arrays. LEKID parameters were robustly determined for 80% of the read tones. Cross-talks between LEKIDs are the first cause of flagging, followed by an excess of eccentricity for $\sim$10% of the LEKIDs, all located in a given region of the field of view. On the 44 scans of Uranus selected for the absolute photometric calibration, 72.5% and 78.2% of the LEKIDs are selected as valid detectors with a probability >70%. By comparing Uranus measurements with a model, we obtain calibration factors of 19.5$\pm$0.6 [Hz/Jy] and 25.6$\pm$0.9 [Hz/Jy] for HF and LF. The point-source continuum measurement uncertainties are 3.0% and 3.4% for HF and LF bands. The RMS of CONCERTO maps is verified to evolve as proportional to the inverse square root of integration time. The measured NEFDs for HF and LF are 115$\pm$2 mJy/beam$\cdot$s${}^{1/2}$ and 95$\pm$1 mJy/beam$\cdot$s${}^{1/2}$, obtained using CONCERTO data on the COSMOS field for a mean precipitable water vapour and elevation of 0.81 mm and 55.7 deg. CONCERTO demonstrates unique capabilities in fast dual-band spectral mapping with a $\sim$18.5' instantaneous field-of-view. CONCERTO's performance in continuum is perfectly in line with expectations.

23pages, 22 figures

References in corpus (66)

• The Cosmic Evolution Survey (COSMOS) -- Overview
• UV Luminosity Functions at redshifts z~4 to z~10: 10000 Galaxies from HST Legacy Fields
• The COSMOS Survey: Hubble Space Telescope / Advanced Camera for Surveys (HST/ACS) Observations and Data Processing
• The Spitzer Legacy Survey of the HST-ACS 2 sq. deg. COSMOS Field: survey strategy and first analysis
• A Comprehensive Study on Galaxies at z~9-16 Found in the Early JWST Data: UV Luminosity Functions and Cosmic Star-Formation History at the Pre-Reionization Epoch
• COSMOS2020: A panchromatic view of the Universe to $z\sim 10$ from two complementary catalogs
• The Interstellar Medium In Galaxies Seen A Billion Years After The Big Bang
• The applicability of FIR fine-structure lines as Star Formation Rate tracers over wide ranges of metallicities and galaxy types
• The Herschel PEP/HerMES Luminosity Function. I: Probing the Evolution of PACS selected Galaxies to z~4
• The deepest Herschel-PACS far-infrared survey: number counts and infrared luminosity functions from combined PEP/GOODS-H observations
• The evolution of the galaxy UV luminosity function at redshifts z ~ 8-15 from deep JWST and ground-based near-infrared imaging
• Planck intermediate results. XLVI. Reduction of large-scale systematic effects in HFI polarization maps and estimation of the reionization optical depth
• Far-infrared Spectral Energy Distribution Fitting for Galaxies Near and Far
• Baryon Acoustic Oscillation Intensity Mapping as a Test of Dark Energy
• A 158 Micron [CII] Line Survey of Galaxies at z ~ 1 to 2: An Indicator of Star Formation in the Early Universe
• Evolution of the dusty infrared luminosity function from z=0 to z=2.3 using observations from Spitzer
• The SCUBA-2 Cosmology Legacy Survey: 850um maps, catalogues and number counts
• The GALEX-VVDS Measurement of the Evolution of the Far-Ultraviolet Luminosity Density and the Cosmic Star Formation Rate
• Evolution of the dust emission of massive galaxies up to z=4 and constraints on their dominant mode of star formation
• The Star Formation Rate Density and Dust Attenuation Evolution over 12 Gyr with the VVDS Surveys
• The Large APEX Bolometer Camera LABOCA
• The UV Luminosity Function of star-forming galaxies via dropout selection at redshifts z ~ 7 and 8 from the 2012 Ultra Deep Field campaign
• The ALPINE-ALMA [CII] Survey: data processing, catalogs, and statistical source properties
• The [CII] 158 micron line emission in high-redshift galaxies
• [CII] 158 $\mu$m Emission as a Star Formation Tracer
• Intensity Mapping with Carbon Monoxide Emission Lines and the Redshifted 21 cm Line
• On the [CII]-SFR relation in high redshift galaxies
• Deep GALEX Imaging of the HST/COSMOS Field: A First Look at the Morphology of z~0.7 Star-forming Galaxies
• Planck 2013 results. IX. HFI spectral response
• Intensity Mapping of the [CII] Fine Structure Line during the Epoch of Reionization
• HerMES: Candidate Gravitationally Lensed Galaxies and Lensing Statistics at Submillimeter Wavelengths
• The ALPINE-ALMA [CII] survey. Little to no evolution in the [CII]-SFR relation over the last 13 Gyr
• A dual-band millimeter-wave kinetic inductance camera for the IRAM 30-meter telescope
• The NIKA2 large field-of-view millimeter continuum camera for the 30-m IRAM telescope
• An ALMA survey of the SCUBA-2 Cosmology Legacy Survey UKIDSS/UDS field: Source catalogue and properties
• High-speed phonon imaging using frequency-multiplexed kinetic inductance detectors
• The ALMA REBELS Survey: The Dust-obscured Cosmic Star Formation Rate Density at Redshift 7
• CCAT-prime Collaboration: Science Goals and Forecasts with Prime-Cam on the Fred Young Submillimeter Telescope
• Line-Intensity Mapping: Theory Review
• Intensity mapping of [CII] from early galaxies
• Calibration and Performance of the NIKA2 camera at the IRAM 30-meter Telescope
• The VLA-COSMOS Survey: I. Radio Identifications from the Pilot Project
• Probing Reionization with Intensity Mapping of Molecular and Fine Structure Lines
• The dust un-biased cosmic star formation history from the 20 cm VLA-COSMOS survey
• A wide field-of-view low-resolution spectrometer at APEX: instrument design and science forecast
• Flux Calibration of Broadband Far Infrared and Submillimetre Photometric Instruments: Theory and Application to Herschel-SPIRE
• Simulations for single-dish intensity mapping experiments
• Carbon Monoxide Intensity Mapping at Moderate Redshifts
• Dissecting the high-z interstellar medium through intensity mapping cross-correlations
• CMB Observations and the Production of Chemical Elements at the End of the Dark Ages
• Predictions and sensitivity forecasts for reionization-era [C II] line intensity mapping
• Constraining the evolution of CII intensity through the end stages of reionization
• Intensity mapping of H-alpha, H-beta, [OII] and [OIII] lines at z<5
• HI intensity mapping with MeerKAT: 1/f noise analysis
• Forecasting [C II] line-intensity mapping measurements between the end of reionization and the epoch of galaxy assembly
• Planck intermediate results. LII. Planet flux densities
• Studying high-z galaxies with [CII] intensity mapping
• DESHIMA 2.0: development of an integrated superconducting spectrometer for science-grade astronomical observations
• The Chandra COSMOS Legacy Survey: clustering dependence of Type 2 AGN on host galaxy properties
• CONCERTO at APEX: Installation and first phase of on-sky commissioning
• The KISS experiment
• 1/f Noise Analysis for FAST HI Intensity Mapping Drift-Scan Experiment
• CONCERTO at APEX: installation and technical commissioning
• CONCERTO: Extracting the power spectrum of the [C II ] emission line
• CONCERTO: Readout and control electronics
• Accurate sky signal reconstruction for ground-based spectroscopy with kinetic inductance detectors

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