Explanipedia

J-PAS: Discovery of RaJav, a bright extended Ly α Nebula at z = 2.25 Open

P. T. Rahna, Mohammad Akhlaghi, J. A. Fernández-Ontiveros, Zhen-Ya Zheng, A. Hernán-Caballero , et al. · 2025

We report the discovery of a massive Ly α nebula (potentially largest ever discovered), RaJav, at z = 2.25, associated with a quasar pair: the bright SDSS J162029.07+433451.1 (hereafter J1620+4334) and the faint newly discovered quasar JPA…

The miniJPAS survey:. Exploring the spatially resolved capabilities of the J-PAS survey with Py2DJPAS Open

J. E. Rodríguez-Martín, L. A. Díaz-García, R. M. González Delgado, G. Martínez-Solaeche, R. García-Benito , et al. · 2025

This work presents a tool developed in to automate the analysis of the properties of spatially resolved galaxies in the survey, a 1 deg^2 survey that acts as precursor of the Javalambre Physics of the Acclerating Universe Survey ( using th…

J-PAS: forecast on the primordial power spectrum reconstruction Open

G. Martínez-Somonte, A. Marcos-Caballero, Enrique Martínez-González, Antonio L. Maroto, Miguel Quartin , et al. · 2025

We investigate the capability of the J-PAS survey to constrain the primordial power spectrum using a non-parametric Bayesian method. Specifically, we analyze simulated power spectra generated by a local oscillatory primordial feature templ…

J-PLUS: Turning Off the Bright Stars Open

Sepideh Eskandarlou, Mohammad Akhlaghi, Johan H Knapen, C. López-Sanjuán, Raúl Infante-Sáinz , et al. · 2025

Photometric surveys require precise point spread function (PSF) characterization, as it varies across filters and is crucial for accurate photometry and low surface brightness (LSB) studies. However, the small PSF size provided by default …

Exploring the spatially-resolved capabilities of the J-PAS survey with Py2DJPAS Open

J. E. Rodríguez-Martín, L. A. Díaz-García, R. M. González Delgado, G. Martínez-Solaeche, R. García-Benito , et al. · 2025

We present Py2DJPAS, a Python-based tool to automate the analysis of spatially resolved galaxies in the \textbf{miniJPAS} survey, a 1~deg$^2$ precursor of the J-PAS survey, using the same filter system, telescope, and Pathfinder camera. Py…

J-PLUS: Understanding outlier white dwarfs in the third data release via dimensionality reduction Open

C. López-Sanjuán, Pier-Emmanuel Tremblay, A. del Pino, H. Domínguez Sánchez, H. Vázquez Ramió , et al. · 2025

Aims . We present the white dwarf catalog derived from the third data release of the Javalambre Photometric Local Universe Survey (J-PLUS DR3), which covers 3284 deg 2 using 12 optical filters. A particular focus is given to the classifica…

The miniJPAS survey quasar selection V: combined algorithm Open

Ignasi Pérez-Ràfols, L. Raul Abramo, G. Martínez-Solaeche, Natália V.N. Rodrigues, Matthew M. Pieri , et al. · 2025

Aims. Quasar catalogues from narrow-band photometric data are used in a variety of applications, including targeting for spectroscopic follow-up, measurements of supermassive black hole masses, or Baryon Acoustic Oscillations. Here, we pre…

J-PLUS: Tomographic analysis of galaxy angular density and redshift fluctuations in Data Release 3. Constraints on photo- z errors, linear bias, and peculiar velocities Open

C. Hernández‐Monteagudo, A. Balaguera-Antolínez, Rodrigo von Marttens, Andrés del Pino, A. Hernán-Caballero , et al. · 2025

The Javalambre Photometric Local Universe Survey (J-PLUS) is a spectro-photometricsurvey covering about 3,000~deg in its third data release (DR3), and containing about 300,000 galaxies with high quality ({} ) photometri…

The J-PLUS collaboration. Additive versus multiplicative systematics in surveys of the large scale structure of the Universe Open

C. Hernández‐Monteagudo, Giovanni Aricò, J. Chaves-Montero, L. Raul Abramo, P. Arnalte-Mur , et al. · 2025

Observational and/or astrophysical systematics modulating the observed number of luminous tracers can constitute a major limitation in the cosmological exploitation of surveys of the large scale structure of the universe. Part of this limi…

J-PLUS: Tomographic analysis of galaxy angular density and redshift fluctuations in Data Release 3. Constraints on photo- z errors, linear bias, and peculiar velocities Open

C. Hernández–Monteagudo, A. Balaguera-Antolínez, Rodrigo von Marttens, Andrés del Pino, A. Hernán-Caballero , et al. · 2025

The Javalambre Photometric Local Universe Survey (J-PLUS) is a spectro-photometricsurvey covering about 3,000~deg in its third data release (DR3), and containing about 300,000 galaxies with high quality ({} ) photometri…

J-PAS: Forecasting constraints on Neutrino Masses Open

Gabriel Rodrigues, Antonio J. Cuesta, Jailson Alcaniz, Miguel Aparicio Resco, Antonio L. Maroto , et al. · 2025

The large-scale structure survey J-PAS is taking data since October 2023. In this work, we present a forecast based on the Fisher matrix method to establish its sensitivity to the sum of the neutrino masses. We adapt the Fisher Galaxy Surv…

Unveiling the small-scale web around galaxies with miniJPAS and DESI: the role of local connectivity in star formation Open

Daniela Galárraga-Espinosa, Guinevere Kauffmann, Silvia Bonoli, Luisa Lucie-Smith, R. M. González Delgado , et al. · 2025

We present the first statistical observational study detecting small-scale filaments in the immediate surroundings of galaxies, i.e. the local web of galaxies. Simulations predict that cold gas, the fuel for star formation, is channeled th…

J-PAS and PFS surveys in the era of dark energy and neutrino mass measurements Open

Fuxing Qin, Y.T. Wang, Gong‐Bo Zhao, Antonio J. Cuesta, J. S. Alcaniz , et al. · 2025

Fisher-matrix forecasts are presented for the cosmological surveys of the Javalambre Physics of the Accelerating Universe Astrophysical Survey (J-PAS) and the Subaru Prime Focus Spectrograph (PFS). The wide, low-redshift coverage of J-PAS …

Photometric segregation of dwarf and giant FGK stars using the SVO Filter Profile Service and photometric tools (Corrigendum) Open

Carlos Rodrigo, P. Cruz, John F. Aguilar, A. Aller, E. Solano , et al. · 2025

The J-PAS survey: The effect of photometric redshift errors on cosmic voids Open

J. A. Mansour, L. J. Liivamägi, A. Tamm, J. Laur, R. Abramo , et al. · 2025

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 properties using a watershed-based method, aiming to assess th…

J-PLUS: The fraction of calcium white dwarfs along the cooling sequence Open

C. López-Sanjuán, Pier-Emmanuel Tremblay, Mairi W O’Brien, D. Spinoso, A. Ederoclite , et al. · 2024

Aims . We used the Javalambre Photometric Local Universe Survey (J-PLUS) second data release (DR2) photometry in 12 optical bands over 2176 deg 2 to estimate the fraction of white dwarfs with the presence of Ca II H+K absorption along the …

J-PLUS: Bayesian object classification with a strum of BANNJOS Open

Andrés del Pino, C. López-Sanjuán, A. Hernán-Caballero, H. Domínguez Sánchez, Rodrigo von Marttens , et al. · 2024

Context . With its 12 optical filters, the Javalambre-Photometric Local Universe Survey (J-PLUS) provides an unprecedented multicolor view of the local Universe. The third data release (DR3) covers 3192 deg 2 and contains 47.4 million obje…

J-PLUS: Beyond Spectroscopy. III. Stellar Parameters and Elemental-abundance Ratios for Five Million Stars from DR3 Open

Yang Huang, Timothy C. Beers, Kai Xiao, Haibo Yuan, Young Sun Lee , et al. · 2024

We present a catalog of stellar parameters (effective temperature T eff , surface gravity , age, and metallicity [Fe/H]) and elemental-abundance ratios ([C/Fe], [Mg/Fe], and [ α /Fe]) for some five million stars (4.5 million dwarfs and …

J-PLUS: Beyond Spectroscopy III. Stellar Parameters and Elemental-abundance Ratios for Five Million Stars from DR3 Open

Yang Huang, Timothy C. Beers, Kai Xiao, Haibo Yuan, Young Sun Lee , et al. · 2024

We present a catalog of stellar parameters (effective temperature $T_{\rm eff}$, surface gravity $\log g$, age, and metallicity [Fe/H]) and elemental-abundance ratios ([C/Fe], [Mg/Fe], and [$α$/Fe]) for some five million stars (4.5 million…

J-PLUS: The fraction of calcium white dwarfs along the cooling sequence Open

C. López-Sanjuán, Pier-Emmanuel Tremblay, Mairi O'Brien, D. Spinoso, A. Ederoclite , et al. · 2024

We used the Javalambre Photometric Local Universe Survey (J-PLUS) DR2 photometry in twelve optical bands over 2176 deg2 to estimate the fraction of white dwarfs with presence of CaII H+K absorption along the cooling sequence. We compared t…

Photometric segregation of dwarf and giant FGK stars using the SVO Filter Profile Service and photometric tools Open

Carlos Rodrigo, P. Cruz, John F. Aguilar, A. Aller, E. Solano , et al. · 2024

Aims. This paper is focused on the segregation of FGK dwarf and giant stars through narrow-band photometric data using the Spanish Virtual Observatory (SVO) Filter Profile Service and associated photometric tools. Methods. We selected spec…

The miniJPAS survey: Evolution of luminosity and stellar mass functions of galaxies up to z ∼ 0.7 Open

L. A. Díaz-García, R. M. González Delgado, R. García-Benito, G. Martínez-Solaeche, J. E. Rodríguez-Martín , et al. · 2024

Aims. We aim to develop a robust methodology for constraining the luminosity and stellar mass functions (LMFs) of galaxies by solely using photometric measurements from multi-filter imaging surveys. We test the potential of these technique…

The miniJPAS Survey: The radial distribution of star formation rates in faint X-ray active galactic nuclei Open

Nischal Acharya, Silvia Bonoli, M. Salvato, A. Cortesi, R. M. González Delgado , et al. · 2024

We study the impact of black hole nuclear activity on both the global and radial star formation rate (SFR) profiles in X-ray-selected active galactic nuclei (AGN) in the field of miniJPAS, the precursor of the much wider J-PAS project. Our…

J-PLUS: Bayesian object classification with a strum of BANNJOS Open

Andrés del Pino, C. López-Sanjuán, A. Hernán-Caballero, H. Domínguez Sánchez, Rodrigo von Marttens , et al. · 2024

With its 12 optical filters, the Javalambre-Photometric Local Universe Survey (J-PLUS) provides an unprecedented multicolor view of the local Universe. The third data release (DR3) covers 3,192 deg$^2$ and contains 47.4 million objects. Ho…

PEARLS: NuSTAR and XMM-Newton Extragalactic Survey of the JWST North Ecliptic Pole Time-domain Field II Open

X. Zhao, F. Civano, Christopher N. A. Willmer, Silvia Bonoli, Chien‐Ting Chen , et al. · 2024

We present the second NuSTAR and XMM-Newton extragalactic survey of the JWST north ecliptic pole (NEP) time-domain field (TDF). The first NuSTAR NEP-TDF survey had 681 ks total exposure time executed in NuSTAR cycle 5 in 2019 and 2020. Thi…

The miniJPAS survey Open

L. Doubrawa, E. S. Cypriano, A. Finoguenov, P. A. A. Lopes, Anthony H. Gonzalez , et al. · 2024

Context. 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 cluster detection window using precise photometric red…

The miniJPAS survey: Maximising the photo-z accuracy from multi-survey datasets with probability conflation Open

A. Hernán-Caballero, Mohammad Akhlaghi, C. López-Sanjuán, H. Vázquez Ramió, J. Laur , et al. · 2024

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 probability distributions (PDZs) obtained independently from each…

Supernova environments in J-PLUS Open

R. González-Díaz, L. Galbany, T. Kangas, R. García-Benito, J. P. Anderson , et al. · 2024

We investigated the local environmental properties of 418 supernovae (SNe) of all types using data from the Javalambre Photometric Local Universe Survey (J-PLUS), which includes five broad-band and seven narrow-band imaging filters. Our st…

Multiwavelength exploration of Extreme Emission Line Galaxies detected in miniJPAS survey Open

Iris Breda, Stergios Amarantidis, J. M. Vı́lchez, E. Pérez‐Montero, C. Kehrig , et al. · 2024

Extreme Emission Line Galaxies (EELGs) stand as remarkable objects due to their extremely metal poor environment and intense star formation. Considered as local analogues of high-redshift galaxies in the peak of their star-forming activity…

The miniJPAS survey. Multiwavelength exploration of detected Extreme Emission Line Galaxies Open

Iris Breda, Stergios Amarantidis, J. M. Vı́lchez, E. Pérez‐Montero, C. Kehrig , et al. · 2024

Extreme Emission Line Galaxies (EELGs) stand as remarkable objects due to their extremely metal poor environment and intense star formation. Considered as local analogues of high-redshift galaxies in the peak of their star-forming activity…

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