Publications (69)
The 2dF Galaxy Redshift Survey: correlation functions, peculiar velocities and the matter density of the Universe
E. Hawkins, S. Maddox, S. Cole +27
We present a detailed analysis of the two-point correlation function, from the 2dF Galaxy Redshift Survey (2dFGRS). We estimate the redshift-space correlation function, xi(s), from…
Exploring the spatially-resolved capabilities of the J-PAS survey with Py2DJPAS
J. E. RodrÃguez-MartÃn, L. A. DÃaz-GarcÃa, R. M. González Delgado +27
We present Py2DJPAS, a Python-based tool to automate the analysis of spatially resolved galaxies in the \textbf{miniJPAS} survey, a 1~deg precursor of the J-PAS survey, using t…
J-PAS & FLAMINGO: Cosmic voids and void galaxies in the gravitational landscape of photometric surveys
J. A. Mansour, B. McCarthy, L. J. Liivamägi +34
The paper presents a method that uses a quasi‑gravitational potential field to identify dynamically dominant cosmic voids and their galaxies in photometric surveys like J‑PAS, show…
The miniJPAS survey. Evolution of the luminosity and stellar mass functions of galaxies up to
L. A. DÃaz-GarcÃa, R. M. González Delgado, R. GarcÃa-Benito +22
We aim at developing a robust methodology for constraining the luminosity and stellar mass functions (LMFs) of galaxies by solely using data from multi-filter surveys and testing t…
The miniJPAS survey quasar selection III: Classification with artificial neural networks and hybridisation
G. MartÃnez-Solaeche, Carolina Queiroz, R. M. González Delgado +28
This paper is part of large effort within the J-PAS collaboration that aims to classify point-like sources in miniJPAS, which were observed in 60 optical bands over 1 deg$^2…
The 2dF Galaxy Redshift Survey: stochastic relative biasing between galaxy populations
Vivienne Wild, John A. Peacock, Ofer Lahav +26
It is well known that the clustering of galaxies depends on galaxy type.Such relative bias complicates the inference of cosmological parameters from galaxy redshift surveys, and is…
J-PAS: A value-added catalogue of optical line intensities for nebular emission galaxies (JOLINES)
J. A. Fernández-Ontiveros, C. López-Sanjuan, A. Hernán-Caballero +38
We present the value-added catalogue JOLINES (J-PAS optical line intensities for nebular emission galaxies), which provides emission-line fluxes in galaxies at from the spectrophot…
Systems engineering applied to ELT instrumentation: The GMACS case
D. M. Faes, A. Souza, C. Froning +14
An important tool for the development of the next generation of extremely large telescopes (ELTs) is a robust Systems Engineering (SE) methodology. GMACS is a first-generation mult…
The miniJPAS survey: the photometric redshift catalogue
A. Hernán-Caballero, J. Varela, C. López-Sanjuan +30
MiniJPAS is a ~1 deg^2 imaging survey of the AEGIS field in 60 bands, performed to demonstrate the scientific potential of the upcoming JPAS survey. Full coverage of the 3800-9100…
The 2dF Galaxy Redshift Survey: The b_J-band galaxy luminosity function and survey selection function
P. Norberg, S. Cole, C. Baugh +25
We use more than 110500 galaxies from the 2dF galaxy redshift survey (2dFGRS) to estimate the b_J-band galaxy luminosity function at redshift z=0, taking account of evolution, the…
Galaxy properties from J-PAS narrow-band photometry
A. MejÃa-Narváez, G. Bruzual, G. Magris C. +14
We study the consistency of the physical properties of galaxies retrieved from SED-fitting as a function of spectral resolution and signal-to-noise ratio (SNR). Using a selection o…
The miniJPAS survey: White dwarf science with 56 optical filters
C. López-Sanjuan, P. -E. Tremblay, A. Ederoclite +21
We analyze the white dwarf population in miniJPAS, the first square degree observed with 56 medium-band, 145 A in width optical filters by the Javalambre Physics of the acceleratin…
The miniJPAS survey: The role of group environment in quenching the star formation
R. M. González Delgado, J. E. RodrÃguez-MartÃn, L. A. DÃaz-GarcÃa +32
The miniJPAS survey has observed deg on the AEGIS field with 60 bands (spectral resolution of ) in order to demonstrate the capabilities of the Javalambre-P…
J-PAS: A Neural Network Approach to Single Stellar Population Characterization
H. DomÃnguez Sánchez, P. Coelho, G. Bruzual +28
J-PAS (Javalambre Physics of the Accelerating Universe Astrophysical Survey) will present a groundbreaking photometric survey covering 8500 deg of the visible sky from Javalamb…
The Anglo-Australian Observatory's 2dF Facility
I. J. Lewis, R. D. Cannon, K. Taylor +20
The 2dF (Two-degree Field) facility at the prime focus of the Anglo-Australian Telescope provides multiple object spectroscopy over a 2 degree field of view. Up to 400 target fibre…
Parameterisation of Galaxy Spectra in the 2dF Galaxy Redshift Survey
D. Madgwick, O. Lahav, K. Taylor +1
The 2dF Galaxy Redshift Survey has already yielded over 130,000 galaxy spectra (out of the planned 250,000). We present a method for the parameterisation of galaxy spectra in the 2…
The Planetary Nebulae Spectrograph: the green light for Galaxy Kinematics
N. G. Douglas, M. Arnaboldi, K. C. Freeman +10
Planetary nebulae are now well established as probes of galaxy dynamics and as standard candles in distance determinations. Motivated by the need to improve the efficiency of plane…
The miniJPAS survey: Maximising the photo-z accuracy from multi-survey datasets with probability conflation
A. Hernán-Caballero, M. Akhlaghi, C. López-Sanjuan +35
We present a new method for obtaining photometric redshifts (photo-z) for sources observed by multiple photometric surveys using a combination (conflation) of the redshift probabil…
The 2dF Galaxy Redshift Survey: Galaxy luminosity functions per spectral type
D. S. Madgwick, O. Lahav, I. K. Baldry +24
We calculate the optical bj luminosity function of the 2dF Galaxy Redshift Survey (2dFGRS) for different subsets defined by their spectral properties. These spectrally selected sub…
J-PAS: The Javalambre-Physics of the Accelerated Universe Astrophysical Survey
N. Benitez, R. Dupke, M. Moles +149
The Javalambre-Physics of the Accelerated Universe Astrophysical Survey (J-PAS) is a narrow band, very wide field Cosmological Survey to be carried out from the Javalambre Observat…
ATLAS: a Cassegrain spectrograph based on volume phase holographic gratings
J. G. Robertson, K. Taylor, I. K. Baldry +2
We are proposing a new spectrograph (ATLAS) which would revolutionise intermediate-dispersion observations at the AAT. Based on the new technology of Volume Phase Holographic grati…
J-NEP: 60-band photometry and photometric redshifts for the James Webb Space Telescope North Ecliptic Pole Time-Domain Field
A. Hernán-Caballero, C. N. A. Willmer, J. Varela +28
The J-PAS survey will observe ~1/3 of the northern sky with a set of 56 narrow-band filters using the dedicated 2.55 m JST telescope at the Javalambre Astrophysical Observatory. Pr…
JPCam: A 1.2Gpixel camera for the J-PAS survey
K. Taylor, A. Marin-Franch, R. Laporte +22
JPCam is a 14-CCD mosaic camera, using the new e2v 9k-by-9k 10microm-pixel 16-channel detectors, to be deployed on a dedicated 2.55m wide-field telescope at the OAJ (Observatorio A…
OJALÃ: Optimizing J-PAS Astronomy for Large-scale Analysis. A foundation model for the SED of galaxies, QSOs and stars
G. MartÃnez-Solaeche, R. M. González Delgado, R. GarcÃa-Benito +37
The advent of large-scale surveys requires efficient ML techniques to exploit the information of massive datasets. We present OJALA, a transformer-based autoregressive foundation m…
The miniJPAS survey: star-galaxy classification using machine learning
P. O. Baqui, V. Marra, L. Casarini +31
Future astrophysical surveys such as J-PAS will produce very large datasets, which will require the deployment of accurate and efficient Machine Learning (ML) methods. In this work…
Galaxy groups in the 2dFGRS: the group-finding algorithm and the 2PIGG catalogue
V. R. Eke, C. M. Baugh, S. Cole +25
The construction of a catalogue of galaxy groups from the 2-degree Field Galaxy Redshift Survey (2dFGRS) is described. Groups are identified by means of a friends-of-friends percol…
TOPz: Photometric redshifts for J-PAS
J. Laur, E. Tempel, A. Tamm +30
The importance of photometric galaxy redshift estimation is rapidly increasing with the development of specialised powerful observational facilities. We develop a new photometric r…
The 2dF Galaxy Redshift Survey: constraints on cosmic star-formation history from the cosmic spectrum
I. K. Baldry, K. Glazebrook, C. M. Baugh +25
We present the first results on the history of star formation in the Universe based on the `cosmic spectrum', in particular, the volume-averaged, luminosity-weighted, stellar absor…
A measurement of the cosmological mass density from clustering in the 2dF Galaxy Redshift Survey
J. A. Peacock, S. Cole, P. Norberg +25
The large-scale structure in the distribution of galaxies is thought to arise from the gravitational instability of small fluctuations in the initial density field of the universe.…
The miniJPAS survey: Identification and characterization of the emission line galaxies down to in the AEGIS field
G. MartÃnez-Solaeche, R. M. González Delgado, R. GarcÃa-Benito +28
The Javalambre-Physics of the Accelerating Universe Astrophysical Survey (J-PAS) is expected to map thousands of square degrees of the northern sky with 56 narrowband filters in th…
SOUTH POL: Revealing the Polarized Southern Sky
A. M. Magalhaes, C. M. de Oliveira, A. Carciofi +13
SOUTH POL will be a survey of the Southern sky in optical polarized light. It will use a newly designed polarimetric module at an 80cm Robotic Telescope. Telescope and polarimeter…
The 2dF Galaxy Redshift Survey: voids and hierarchical scaling models
D. J. Croton, M. Colless, E. Gaztanaga +26
We measure the redshift space reduced void probability function (VPF) for 2dFGRS volume limited galaxy samples covering the absolute magnitude range M_bJ-5logh=-18 to -22. Theoreti…
The 2dF Galaxy Redshift Survey: Hierarchical galaxy clustering
C. M. Baugh, D. J. Croton, E. Gaztanaga +26
We use the two-degree field Galaxy Redshift Survey (2dFGRS) to test the hierarchical scaling hypothesis: namely, that the -point galaxy correlation functions can be written in t…
Radio sources in the 2dF Galaxy Redshift Survey - II. Local radio luminosity functions for AGN and star-forming galaxies at 1.4 GHz
Elaine M. Sadler, Carole A. Jackson, Russell D. Cannon +25
We have cross-matched the 1.4 GHz NRAO VLA Sky Survey (NVSS) with the first 210 fields observed in the 2dF Galaxy Redshift Survey (2dFGRS), covering an effective area of 325 square…
J-PAS: First Identification, Physical Properties and Ionization Efficiency of Extreme Emission Line Galaxies
A. Giménez-Alcázar, R. AmorÃn, J. M. VÃlchez +32
Extreme emission line galaxies (EELGs) are key tracers of intense star formation and potential analogues of the sources that reionized the early Universe. Their low-redshift counte…
The miniJPAS Survey: A Study on Wavelength Dependence of the Photon Response Non-uniformity of the JPAS-{\it Pathfinder} Camera
Kai Xiao, Haibo Yuan, J. Varela +20
Understanding the origins of small-scale flats of CCDs and their wavelength-dependent variations plays an important role in high-precision photometric, astrometric, and shape measu…
The 2dF Galaxy Redshift Survey: Luminosity dependence of galaxy clustering
P. Norberg, C. M. Baugh, E. Hawkins +23
We investigate the dependence of the strength of galaxy clustering on intrinsic luminosity using the Anglo-Australian two degree field galaxy redshift survey (2dFGRS). The 2dFGRS i…
The 2dF Galaxy Redshift Survey: Power-spectrum analysis of the final dataset and cosmological implications
S. Cole, W. J. Percival, J. A. Peacock +28
We present a power spectrum analysis of the final 2dF Galaxy Redshift Survey, employing a direct Fourier method. The sample used comprises 221,414 galaxies with measured redshifts.…
Modern Techniques in Galaxy Kinematics: CDI and the Planetary Nebula Spectrograph
N. G. Douglas, K. Kuijken, A. J. Romanowsky +4
We report here the successful commissioning of the PN.Spectrograph, the first special-purpose instrument for the measurement of galaxy kinematics through the PN population
The miniJPAS survey: a preview of the Universe in 56 colours
S. Bonoli, A. MarÃn-Franch, J. Varela +166
The Javalambre-Physics of the Accelerating Universe Astrophysical Survey (J-PAS) will soon start to scan thousands of square degrees of the northern extragalactic sky with a unique…
The miniJPAS survey: Dissecting galaxy properties across environments with spatially resolved photometry
J. E. RodrÃguez-MartÃn, R. M. González Delgado, L. A. DÃaz-GarcÃa +27
The Javalambre-Physics of the Accelerating Universe Astrophysical Survey (J-PAS) is an ongoing survey mapping thousands of square degrees in the Northern Hemisphere using 56 narrow…
The miniJPAS survey: AGN & host galaxy co-evolution of X-ray selected sources
I. E. López, M. Brusa, S. Bonoli +35
Studies indicate strong evidence of a scaling relation in the local Universe between the supermassive black hole mass ($M_\rm{BH}$) and the stellar mass of their host galaxies ($M_…
J-PAS: Discovery of RaJav, a bright spatially extended Ly Nebula at z=2.25
P. T. Rahna, M. Akhlaghi, J. A. Fernández-Ontiveros +29
We report the discovery of a massive and potentially largest Ly Nebula, RaJav, at z=2.25, associated with a quasar pair: the bright SDSS~J162029.07+433451.1 (hereafter J1620+43…
A new upper limit on the total neutrino mass from the 2dF Galaxy Redshift Survey
O. Elgaroy, O. Lahav, W. J. Percival +27
We constrain f_nu = Omega_nu / Omega_m, the fractional contribution of neutrinos to the total mass density in the Universe, by comparing the power spectrum of fluctuations derived…
The 2dF Galaxy Redshift Survey: The population of nearby radio galaxies at the 1 mJy level
M. Magliocchetti, S. J. Maddox, C. A. Jackson +21
We use redshift determinations and spectral analysis of galaxies in the 2dF Galaxy Redshift Survey to study the properties of local radio sources with mJy. 557 objects dra…
J-PAS: forecasts on interacting vacuum energy models
V. Salzano, C. Pigozzo, M. Benetti +21
The next generation of galaxy surveys will allow us to test some fundamental aspects of the standard cosmological model, including the assumption of a minimal coupling between the…
J-PAS: Measuring emission lines with artificial neural networks
G. MartÃnez-Solaeche, R. M. González Delgado, R. GarcÃa-Benito +27
Throughout this paper we present a new method to detect and measure emission lines in J-PAS up to . J-PAS will observe ~deg of the northern sky in the upcoming…
The 2dF Galaxy Redshift Survey: higher order galaxy correlation functions
D. J. Croton, E. Gaztanaga, C. M. Baugh +26
We measure moments of the galaxy count probability distribution function in the two-degree field galaxy redshift survey (2dFGRS). The survey is divided into volume limited subsampl…
The J-PAS survey: The effect of photometric redshift errors on cosmic voids
J. A. Mansour, L. J. Liivamägi, A. Tamm +23
We investigated the impact of photometric redshift errors in the ongoing Javalambre Physics of the Accelerating Universe Astrophysical Survey (J-PAS) on void identification and pro…
The 2dF Galaxy Redshift Survey: luminosity functions by density environment and galaxy type
Darren J. Croton, Glennys R. Farrar, Peder Norberg +26
We use the 2dF Galaxy Redshift Survey to measure the dependence of the bJ-band galaxy luminosity function on large-scale environment, defined by density contrast in spheres of radi…
Supernova / Acceleration Probe: A Satellite Experiment to Study the Nature of the Dark Energy
SNAP Collaboration, G. Aldering, W. Althouse +109
The Supernova / Acceleration Probe (SNAP) is a proposed space-based experiment designed to study the dark energy and alternative explanations of the acceleration of the Universe's…
The 2dF Galaxy Redshift Survey: Spectra and redshifts
Matthew Colless, G. B. Dalton, S. J. Maddox +26
The 2dF Galaxy Redshift Survey (2dFGRS) is designed to measure redshifts for approximately 250000 galaxies. This paper describes the survey design, the spectroscopic observations,…
The miniJPAS survey: Identification and characterization of galaxy populations with the J-PAS photometric system
R. M. González Delgado, L. A. DÃaz-GarcÃa, A. de Amorim +39
J-PAS will soon start imaging 8000 deg2 of the northern sky with its unique set of 56 filters (R 60). Before, we observed 1 deg2 on the AEGIS field with an interim camera wi…
The miniJPAS survey: The galaxy populations in the most massive cluster in miniJPAS, mJPC2470-1771
J. E. RodrÃguez MartÃn, R. M. González Delgado, G. MartÃnez-Solaeche +33
The miniJPAS is a 1 deg survey that uses the Javalambre-Physics of the Accelerating Universe Astrophysical Survey (J-PAS) filter system (54 narrow-band filters) with the Pathfi…
The 2dF Galaxy Redshift Survey: The dependence of galaxy clustering on luminosity and spectral type
P. Norberg, C. M. Baugh, E. Hawkins +25
We investigate the dependence of galaxy clustering on luminosity and spectral type using the 2dF Galaxy Redshift Survey (2dFGRS). Spectral types are assigned using the principal co…
The 2dF Galaxy Redshift Survey: the luminosity function of cluster galaxies
Roberto De Propris, M. Colless, S. Driver +27
We have determined the composite luminosity function (LF) for galaxies in 60 clusters from the 2dF Galaxy Redshift Survey. The LF spans the range , and is…
Studying large-scale structure with the 2dF Galaxy Redshift Survey
J. A. Peacock, M. Colless, I. Baldry +25
The 2dF Galaxy Redshift Survey is the first to observe more than 100,000 redshifts. This allows precise measurements of many of the key statistics of galaxy clustering, in particul…
J-PAS: forecasts on dark energy and modified gravity theories
Miguel Aparicio Resco, Antonio L. Maroto, Jailson S. Alcaniz +16
The next generation of galaxy surveys will allow us to test one of the most fundamental assumptions of the standard cosmology, i.e., that gravity is governed by the general theory…
Galaxy kinematics from counter-dispersed imaging
N. G. Douglas, K. Taylor
Determining the internal kinematics of a galaxy from planetary nebulae (PN) is usually a two step process in which the candidate PN are first identified in a target galaxy and then…
The miniJPAS survey: stellar atmospheric parameters from 56 optical filters
H. -B. Yuan, L. Yang, P. Cruz +29
With a unique set of 54 overlapping narrow-band and two broader filters covering the entire optical range, the incoming Javalambre-Physics of the Accelerating Universe Astrophysica…
The miniJPAS survey: Optical detection of galaxy clusters with PZWav
L. Doubrawa, E. S. Cypriano, A. Finoguenov +21
Galaxy clusters are an essential tool to understand and constrain the cosmological parameters of our Universe. Thanks to its multi-band design, J-PAS offers a unique group and clus…
The 2dF Galaxy Redshift Survey: Spectral Types and Luminosity Functions
S. R. Folkes, S. Ronen, I. Price +22
We describe the 2dF Galaxy Redshift Survey (2dFGRS), and the current status of the observations. In this exploratory paper, we apply a Principal Component Analysis to a preliminary…
J-PAS: forecasts on interacting dark energy from baryon acoustic oscillations and redshift-space distortions
A. A. Costa, R. J. F. Marcondes, R. G. Landim +14
We estimate the constraining power of J-PAS for parameters of an interacting dark energy cosmology. The survey is expected to map several millions of luminous red galaxies, emissio…
The 2dF Galaxy Redshift Survey: galaxy clustering per spectral type
D. S. Madgwick, E. Hawkins, O. Lahav +25
We have calculated the two-point correlation functions in redshift space, xi(sigma,pi), for galaxies of different spectral types in the 2dF Galaxy Redshift Survey. Using these corr…
SPARC4: A Simultaneous Polarimeter and Rapid Camera in 4 Bands
C. V. Rodrigues, F. J. Jablonski, K. Taylor +13
We present the basic concept of a new astronomical instrument: SPARC4 - Simultaneous Polarimeter and Rapid Camera in 4 bands. SPARC4 combines in one instrument: (i) photometric and…
The nature of the relative bias between galaxies of different spectral type in 2dFGRS
E. Conway, S. Maddox, V. Wild +29
We present an analysis of the relative bias between early- and late-type galaxies in the Two-degree Field Galaxy Redshift Survey (2dFGRS). Our analysis examines the joint counts in…
Galaxy groups in the 2dFGRS: the luminous content of the groups
V. R. Eke, C. S. Frenk, C. M. Baugh +25
The 2dFGRS Percolation-Inferred Galaxy Group (2PIGG) catalogue of ~29000 objects is used to study the luminous content of galaxy systems of various sizes. Mock galaxy catalogues co…
The miniJPAS survey: clusters and galaxy groups detection with AMICO
M. Maturi, A. Finoguenov, P. A. A. Lopes +31
Samples of galaxy clusters allow us to better understand the physics at play in galaxy formation and to constrain cosmological models once their mass, position (for clustering stud…
The 2dF Galaxy Redshift Survey: The bias of galaxies and the density of the Universe
Licia Verde, Alan F. Heavens, Will J. Percival +27
We compute the bispectrum of the 2dF Galaxy Redshift Survey (2dFGRS) and use it to measure the bias parameter of the galaxies. This parameter quantifies the strength of clustering…