A5054557528- Astronomy and Astrophysical Research
- Galaxies: Formation, Evolution, Phenomena
- CCD and CMOS Imaging Sensors
- Calibration and Measurement Techniques
- Scientific Research and Discoveries
- Gamma-ray bursts and supernovae
- Satellite Image Processing and Photogrammetry
- Infrared Target Detection Methodologies
- Astrophysics and Cosmic Phenomena
- Radio Astronomy Observations and Technology
- Remote Sensing and LiDAR Applications
- Atmospheric and Environmental Gas Dynamics
- Particle Detector Development and Performance
- Cosmology and Gravitation Theories
- Advanced Vision and Imaging
- Remote Sensing in Agriculture
- Stellar, planetary, and galactic studies
- Dark Matter and Cosmic Phenomena
Institute of Space Sciences
2021-2024
Institut d'Estudis Espacials de Catalunya
2022-2024
Institute for High Energy Physics
2018
ABSTRACT We use the GALFORM semi-analytical galaxy formation model implemented in Planck Millennium N-body simulation to build a mock catalogue on an observer’s past lightcone. The mass resolution of this is almost order magnitude better than previous simulations used for purpose, allowing us probe fainter galaxies and hence more complete at low redshifts. high time cadence outputs allows make improved calculations properties positions mock. test predictions against Physics Accelerating...
ABSTRACT The physics of the accelerating Universe (PAU) camera is an optical narrow band and broad imaging instrument mounted at prime focus William Herschel Telescope. We describe image calibration procedure PAU survey data. rely on external photometric catalogue to calibrate our data using stars that have been observed by both sets. fit stellar templates broad-band photometry Sloan Digital Sky Survey synthesize we compare PAUS determine their calibration. Consequently, are in AB system as...
We present the first measurements of projected clustering and intrinsic alignments (IA) galaxies observed by Physics Accelerating Universe Survey (PAUS). With photometry in 40 narrow optical passbands ($450\rm{nm}-850\rm{nm}$), quality photometric redshift estimation is $\sigma_{z} \sim 0.01(1 + z)$ for $19\,\rm{deg}^{2}$ Canada-France-Hawaii Telescope Legacy (CFHTLS) W3 field, allowing us to measure 3D IA flux-limited, faint ($i < 22.5$) out $z\sim0.8$. To two-point statistics, we...
The D4000 spectral break index is one of the most important features in visible spectrum, as it a proxy for stellar ages and also used galaxy classification. However, its direct measurement has always been reserved to spectroscopy. Here, we present general method directly measure with narrow-band (NB) photometry; validated using realistic simulations, then evaluated PAUS NBs, cross-matched VIPERS spectra ($i_{\rm AB} < 22.5$, $0.562 z 0.967$). We reconstruct SED-fitting code CIGALE; use NBs...
ABSTRACT PAUCam is an innovative optical narrow-band imager mounted at the William Herschel Telescope built for Physics of Accelerating Universe Survey (PAUS). Its set 40 filters results in images that are complex to calibrate, with specific instrumental signatures cannot be processed traditional data reduction techniques. In this paper, we present two pipelines developed by PAUS management team objective producing science-ready catalogues from uncalibrated raw images. The Nightly pipeline...
ABSTRACT Galaxy pairs constitute the initial building blocks of galaxy evolution, which is driven through merger events and interactions. Thus, analysis these systems can be valuable in understanding evolution studying structure formation. In this work, we present a new publicly available catalogue close identified using photometric redshifts provided by Physics Accelerating Universe Survey (PAUS). To efficiently detect them, take advantage high-precision photo−z (σ68 &lt; 0.02) apply an...
PAUCam is an innovative optical narrow-band imager mounted at the William Herschel Telescope built for Physics of Accelerating Universe Survey (PAUS). Its set 40 filters results in images that are complex to calibrate, with specific instrumental signatures cannot be processed traditional data reduction techniques. In this paper we present two pipelines developed by PAUS management team objective producing science-ready catalogues from uncalibrated raw images. The Nightly pipeline takes care...
The Physics of the Accelerating Universe (PAU) camera is an optical narrow band and broad imaging instrument mounted at prime focus William Herschel Telescope. We describe image calibration procedure PAU Survey data. rely on external photometric catalogue to calibrate our data using stars that have been observed by both datasets. fit stellar templates photometry Sloan Digital Sky synthesise we compare PAUS determine their calibration. Consequently, are in AB system as inherited from its...
We present the Lyman-$\alpha$ (Ly$\alpha$) and ultraviolet (UV) luminosity function (LF), in bins of redshift, quasars selected Physics Accelerating Universe Survey (PAUS). A sample 915 objects was at $2.7<z<5.3$ within an effective area $\sim 36$ deg$^2$ observed 40 narrow-band filters (NB; FWHM 120$ \r{A}). cover intermediate-bright regime LF $(10^{43.5}<(L_{{\rm Ly}\alpha}/{\rm erg\,s}^{-1})<10^{45.5}$; $-29<M_{\rm UV}<-24)$. The continuous wavelength coverage PAUS NB set allows a very...
We present the Lyman-alpha ( and ultraviolet (UV) luminosity function (LF) in bins of redshift for quasars selected Physics Accelerating Universe Survey (PAUS). A sample 915 objects was at $2.7<z<5.3$ within an effective area $ 36$ deg$^2$ observed 40 narrow-band (NB) filters (FWHM cover intermediate--bright regime LF erg\,s $; $-29<M_ UV <-24$). The continuous wavelength coverage PAUS NB set allows very efficient target identification precise measurements. show that our method...
ABSTRACT We present photometric redshifts (photo-z) for the deep wide fields of Physics Accelerating Universe Survey (PAUS), covering an area $\sim$50 deg$^{2}$, $\sim$1.8 million objects up to $i_{\rm {AB}}\lt 23$. The PAUS overlap with W1 and W3 from CFHTLenS G09 field KiDS/GAMA. Photo-z are estimated using 40 narrow bands (NB) broad-bands (BB) KiDS. compute SED template-fitting code bcnz, a modification in calibration technique zero-point between observed modelled fluxes, that removes any...
We present photometric redshifts for 1 341 559 galaxies from the Physics of Accelerating Universe Survey (PAUS) over 50.38 ${\rm deg}^{2}$ sky to $i_{\rm AB}=23$. Redshift estimation is performed using DEEPz, a deep-learning redshift code. analyse precision when varying and spectroscopic samples. Furthermore, we examine observational instrumental effects on redshifts, compare measurements with those obtained template method-fitting BCNz2. Finally, use in identification close galaxy pairs....
We present photometric redshifts for 1\,341\,559 galaxies from the Physics of Accelerating Universe Survey (PAUS) over 50.38 deg $ sky to $i_ AB =23$. Redshift estimation was performed using DEEPz a deep learning redshift code. analysed precision when varying and spectroscopic samples. Furthermore, we examined observational instrumental effects on redshifts, compared measurements with those obtained template method-fitting BCNz2 . Finally, use in identification close galaxy pairs. find that...
We present an application of unsupervised Machine Learning Clustering to the PAU Survey galaxy spectral energy distribution (SED) within COSMOS field. The clustering algorithm is implemented and optimized get relevant groups in data SEDs. find 12 from a total number 5,234 targets survey at $0.01 <$ z $< 0.28$. Among groups, 3,545 galaxies (68\%) show emission lines These also include 1,689 old with no active star formation. have fitted SED every single each group CIGALE. mass, age specific...
We present photometric redshifts (photo-$z$) for the deep wide fields of Physics Accelerating Universe Survey (PAUS), covering an area $\sim$50 deg$^{2}$, $\sim$1.8 million objects up to $i_{\textrm{AB}}<23$. The PAUS overlap with W1 and W3 from CFHTLenS G09 field KiDS/GAMA. Photo-$z$ are estimated using 40 narrow bands (NB) broad (BB) KiDS. compute SED template-fitting code BCNZ, a modification in calibration technique zero-point between observed modelled fluxes, that removes any dependence...
Galaxy pairs constitute the initial building blocks of galaxy evolution, which is driven through merger events and interactions. Thus, analysis these systems can be valuable in understanding evolution studying structure formation. In this work, we present a new publicly available catalogue close identified using photometric redshifts provided by Physics Accelerating Universe Survey (PAUS). To efficiently detect them take advantage high-precision photo$-z$ ($σ_{68} < 0.02$) apply an...
We use the GALFORM semi-analytical galaxy formation model implemented in Planck Millennium N-body simulation to build a mock catalogue on an observer's past lightcone. The mass resolution of this is almost order magnitude better than previous simulations used for purpose, allowing us probe fainter galaxies and hence more complete at low redshifts. high time cadence outputs allows make improved calculations properties positions mock. test predictions against Physics Accelerating Universe...