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The Open Journal of Astrophysics

@ojastro.bsky.social

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A peer-reviewed Diamond Open-Access Astrophysics journal using an arXiv overlay. This community-run service is provided entirely free for authors and readers. https://astro.theoj.org/

astro.theoj.org

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The Open Journal of Astrophysics @ojastro.bsky.social · 17h

New Publication at the Open Journal of Astrophysics: "Synthesizer: a Software Package for Synthetic Astronomical Observables" by Christopher Lovell (Cambridge), William Roper, Aswin Vijayan, & Stephen Wilkins (Sussex), Sophie Newman (Portsmouth) and Louise Seeyave (Sussex)

doi.org/10.33232/001...

Synthesizer: a Software Package for Synthetic Astronomical Observables | Published in The Open Journal of Astrophysics

By Christopher C. Lovell, William J. Roper & 4 more. A suite of software tools for creating synthetic astrophysical observables for use in mock galaxy catalogues

The Open Journal of Astrophysics @ojastro.bsky.social · 1d

This is our 150th paper of Vol. 8 (2025)...

The Open Journal of Astrophysics @ojastro.bsky.social · 1d

New Publication at the Open Journal of Astrophysics: "What Sets the Metallicity of Ultra-Faint Dwarfs?" by Vance Wheeler, Andrey Kravtsov, Anirudh Chiti & Harley Katz (U. Chicago) and Vadim A. Semenov (CfA Harvard), all based in the USA.

doi.org/10.33232/001...

What Sets the Metallicity of Ultra-Faint Dwarfs? | Published in The Open Journal of Astrophysics

By Vance Wheeler, Andrey Kravtsov & 3 more. Using numerical simulations to model the stellar metallicities of ultra-faint dwarf galaxies, finding agreement with current observations

The Open Journal of Astrophysics @ojastro.bsky.social · 1d

New Publication at the Open Journal of Astrophysics: "What Sets the Metallicity of Ultra-Faint Dwarfs?" by Vance Wheeler, Andrey Kravtsov, Anirudh Chiti & Harley Katz (U. Chicago) and Vadim A. Semenov (CfA Harvard), all based in the USA.

doi.org/10.33232/001...

What Sets the Metallicity of Ultra-Faint Dwarfs? | Published in The Open Journal of Astrophysics

By Vance Wheeler, Andrey Kravtsov & 3 more. Using numerical simulations to model the stellar metallicities of ultra-faint dwarf galaxies, finding agreement with current observations

The Open Journal of Astrophysics @ojastro.bsky.social · 2d

New Publication at the Open Journal of Astrophysics: "Analysis of Galaxies at the Extremes: Failed Galaxy Progenitors in the MAGNETICUM Simulations" by Jonah S. Gannon (Swinburne University, Australia) and 7 others based in Australia and Germany.

doi.org/10.33232/001...

Analysis of Galaxies at the Extremes: Failed Galaxy Progenitors in the MAGNETICUM Simulations | Published in The Open Journal of Astrophysics

By Jonah S. Gannon, Lucas C. Kimmig & 6 more. Identifying the possible high-redshift progenitors of low-redshift ultra-diffuse galaxies in cosmological simulations

The Open Journal of Astrophysics @ojastro.bsky.social · 3d

New Publication at the Open Journal of Astrophysics: "Testing gravitational physics by combining DESI DR1 and weak lensing datasets using the E_G estimator" by S.J. Rauhut (Swinburne University of Technology, Australia) and an international cast of 63 others.

doi.org/10.33232/001...

Testing gravitational physics by combining DESI DR1 and weak lensing datasets using the E_G estimator | Published in The Open Journal of Astrophysics

By S. J. Rauhut, Chris Blake & 62 more. Comparison of BAO measurements from BOSS, DESI with weak lensing from KiDS, DES and HSC showing that the results are consistent with the standard cosmological m...

The Open Journal of Astrophysics @ojastro.bsky.social · 3d

New Publication at the Open Journal of Astrophysics: "Mapping the Nearest Ancient Sloshing Cold Front in the Sky with XMM-Newton" by Sheng-Chieh Lin (University of Kentucky) and 10 others based in the USA, Spain and Germany

doi.org/10.33232/001...

Mapping the Nearest Ancient Sloshing Cold Front in the Sky with XMM-Newton | Published in The Open Journal of Astrophysics

By Sheng-Chieh Lin, Yuanyuan Su & 9 more. Cold fronts in the VIrgo Cluster, their importance in shaping the thermal dynamics of the intracluster medium beyond the cluster core, and theirimplications f...

The Open Journal of Astrophysics @ojastro.bsky.social · 5d

In response to increasing activity, we wish to add more members to our Editorial Board. We're looking for expertise in any area of astrophysics, but people working in instrumentation or stellar astrophysics are particular welcome.

Please contact us here if you want to volunteer!

astro.theoj.org

The Open Journal of Astrophysics

The Open Journal of Astrophysics is an arXiv overlay journal providing open access to peer-reviewed research in astrophysics and cosmology.

astro.theoj.org

The Open Journal of Astrophysics @ojastro.bsky.social · 6d

New Publication at the Open Journal of Astrophysics: "Efficient semi-analytic modelling of Pop III star formation from Cosmic Dawn to Reionization" by Sahil Hegde and Steven R. Furlanetto (University of Californi Los Angeles, USA)

doi.org/10.33232/001...

Efficient semi-analytic modelling of Pop III star formation from Cosmic Dawn to Reionization | Published in The Open Journal of Astrophysics

By Sahil Hegde, Steven R. Furlanetto. A self-consistent analytic model to trace the formation of the first stars from their birth through the first billion years of the universe's history complementin...

The Open Journal of Astrophysics @ojastro.bsky.social · 7d

New Publication at the Open Journal of Astrophysics: "Seeding Cores: A Pathway for Nuclear Star Clusters from Bound Star Clusters in the First Billion Years" by Fred Garcia (Columbia U., USA), Massimo Ricotti (U. Maryland, USA) and Kazuyuki Sugimura (Hokkaido U., Japan)
doi.org/10.33232/001...

Seeding Cores: A Pathway for Nuclear Star Clusters from Bound Star Clusters in the First Billion Years | Published in The Open Journal of Astrophysics

By Fred Angelo Batan Garcia, Massimo Ricotti & 1 more. Modelling the formation of Nuclear Star Clusters using cosmological radiation-hydrodynamic simulations, with discussion of the implications for s...

The Open Journal of Astrophysics @ojastro.bsky.social · 10d

New Publication at the Open Journal of Astrophysics: "Comparing the Architectures of Multiplanet Systems from Kepler, K2, and TESS Data" by Robert L Royer and Jason H. Steffen (University of Nevada, USA).

doi.org/10.33232/001...

Comparing the Architectures of Multiplanet Systems from Kepler, K2, and TESS Data | Published in The Open Journal of Astrophysics

By Robert L Royer, Jason H. Steffen. Exploration of the trends seen in exoplanet survey data, including Kepler, TESS, and K2 including many planetary systems with multiple planets

The Open Journal of Astrophysics @ojastro.bsky.social · 10d

New Publication at the Open Journal of Astrophysics: "SDSS-C4 3028: the Nearest Blue Galaxy Cluster Devoid of an Intracluster Medium" by Shweta Jain (University of Kentucky, USA) and 11 others based in the USA, Australia and Korea.

doi.org/10.33232/001...

SDSS-C4 3028: the Nearest Blue Galaxy Cluster Devoid of an Intracluster Medium | Published in The Open Journal of Astrophysics

By Shweta Jain, Yuanyuan Su & 10 more. A galaxy cluster with an unusually high fraction (about 63%) of star-forming galaxies which may be a result of ram pressure stripping

The Open Journal of Astrophysics @ojastro.bsky.social · 10d

New Publication at the Open Journal of Astrophysics: "Cosmic Multipoles in Galaxy Surveys II: Comparing Different Methods in Assessing the Cosmic Dipole" by Vasudev Mittal, Oliver T. Oayda and Geraint F. Lewis (U. Sydney, Australia)

doi.org/10.33232/001...

Cosmic Multipoles in Galaxy Surveys II: Comparing Different Methods in Assessing the Cosmic Dipole | Published in The Open Journal of Astrophysics

By Vasudev Mittal, Oliver T. Oayda & 1 more. A comparison of methods for determining the number count dipole from cosmological surveys with a discussion of the implications for the known discordance w...

The Open Journal of Astrophysics @ojastro.bsky.social · 13d

New Publication in the Open Journal of Astrophysics: "The Local Volume Database: a library of the observed properties of nearby dwarf galaxies and star clusters" by Andrew B. Pace (University of Virginia, USA)

doi.org/10.33232/001...

The Local Volume Database: a library of the observed properties of nearby dwarf galaxies and star clusters | Published in The Open Journal of Astrophysics

By Andrew B Pace. Positional, structural, kinematic, chemical, and dynamical parameters for dwarf galaxies and star clusters in the Local Volume

The Open Journal of Astrophysics @ojastro.bsky.social · 15d

New Publication at the Open Journal of Astrophysics: "Microphysical Regulation of Non-Ideal MHD in Weakly-Ionized Systems: Does the Hall Effect Matter?" by Philip F. Hopkins (1), Jonathan Squire (2), Raphael Skalidis (1) and Nadine H. Soliman (1)

(1) Caltech; (2) U. Otago

doi.org/10.33232/001...

Microphysical Regulation of Non-Ideal MHD in Weakly-Ionized Systems: Does the Hall Effect Matter? | Published in The Open Journal of Astrophysics

By Philip F. Hopkins, Jonathan Squire & 2 more. An improved treatment of non-ideal effects in magnetohydrodynamics, particularly the Hall effect, and a discussion of the implications for weakly-ionize...

The Open Journal of Astrophysics @ojastro.bsky.social · 15d

New Publication at the Open Journal of Astrophysics: "Is feedback-free star formation possible?" by Andrea Ferrara,
Daniele Manzoni, and Evangelia Ntormousi (Scuola Normale Superiore, Pisa, Italy)

doi.org/10.33232/001...

Is feedback-free star formation possible? | Published in The Open Journal of Astrophysics

By Andrea Ferrara, Daniele Manzoni & 1 more. An argument that Lyman-alpha radiation pressure strongly limits star formation efficiency, even at solar metallicities, so that a feedback-free star format...

The Open Journal of Astrophysics @ojastro.bsky.social · 16d

New Publication at the Open Journal of Astrophysics: "Reanalysis of Stage-III cosmic shear surveys: A comprehensive study of shear diagnostic tests" by Jazmine Jefferson and 13 others for the LSST Dark Energy Science Collaboration

doi.org/10.33232/001...

Reanalysis of Stage-III cosmic shear surveys: A comprehensive study of shear diagnostic tests | Published in The Open Journal of Astrophysics

By Jazmine Jefferson, Yuuki Omori & 13 more. Diagnostic tests on three public shear catalogs (KiDS-1000, Year 3 DES-Y3 s, and Year 3 HSC-Y3); not all the surveys pass all the tests

The Open Journal of Astrophysics @ojastro.bsky.social · 17d

New Publication at the Open Journal of Astrophysics: "The Bispectrum of Intrinsic Alignments: Theory Modelling and Forecasts for Stage IV Galaxy Surveys" by Thomas Bakx (Utrecht University, NL) and 4 others based in the Netherlands, Germany and Croatia.

doi.org/10.33232/001...

The Bispectrum of Intrinsic Alignments: Theory Modelling and Forecasts for Stage IV Galaxy Surveys | Published in The Open Journal of Astrophysics

By Thomas Bakx, Alexander Eggemeier & 3 more. The bispectrum of intrinsic galaxy alignments, a possible source of systematicerrors in extracting cosmological information from the analysis of weak lens...

The Open Journal of Astrophysics @ojastro.bsky.social · 20d

New Publication at the Open Journal of Astrophysics: "Jet-Driven Formation of Bipolar Rings in Planetary Nebulae: Numerical Simulations Inspired by NGC 1514" by Muhammad Akashi, Ealeal Bear, and Noam Soker (Technion, Haifa, Israel)

doi.org/10.33232/001...

Jet-Driven Formation of Bipolar Rings in Planetary Nebulae: Numerical Simulations Inspired by NGC 1514 | Published in The Open Journal of Astrophysics

By Muhammad Akashi, Ealeal Bear & 1 more. Evidence from numerical simulations notion that jets play a substantial role in shaping planetary nebulae (PNe).

The Open Journal of Astrophysics @ojastro.bsky.social · 20d

New Publication at the Open Journal of Astrophysics: "Jet-Driven Formation of Bipolar Rings in Planetary Nebulae: Numerical Simulations Inspired by NGC 1514" by Muhammad Akashi, Ealeal Bear, and Noam Soker (Technion, Haifa, Israel)

doi.org/10.33232/001...

Jet-Driven Formation of Bipolar Rings in Planetary Nebulae: Numerical Simulations Inspired by NGC 1514 | Published in The Open Journal of Astrophysics

By Muhammad Akashi, Ealeal Bear & 1 more. Evidence from numerical simulations notion that jets play a substantial role in shaping planetary nebulae (PNe).

The Open Journal of Astrophysics @ojastro.bsky.social · 24d

New Publication at the Open Journal of Astrophysics: "The Moon as a possible source for Earth’s co-orbital bodies" by R. Sfair, L. C. Gomes, O. C. Winter & R. A. Moraes (São Paulo State U, Brazil), G. Borderes-Motta (ASU-CAS, Czechia) and C. M. Schäfer (U Tübingen, Germany)

doi.org/10.33232/001...

The Moon as a possible source for Earth's co-orbital bodies | Published in The Open Journal of Astrophysics

By Rafael Sfair, L. C. Gomes & 4 more. A numerical exploration of the ejection velocities and launch locations necessary for lunar ejecta to evolve into Earth’s co-orbital bodies

The Open Journal of Astrophysics @ojastro.bsky.social · 27d

New Publication at the Open Journal of Astrophysics: "On Soft Clustering For Correlation Estimators" by Edward Berman (Northeastern University, USA) and 13 others based in the USA, France, Denmark and Finland and Cosmos-Web:The JWST Cosmic Origins Survey

doi.org/10.33232/001...

On Soft Clustering For Correlation Estimators | Published in The Open Journal of Astrophysics

By Edward Berman, Sneh Pandya & 13 more. An algorithm for estimating correlations that clusters objects in a probabilistic fashion, enabling the uncertainty caused by clustering to be quantified simpl...

The Open Journal of Astrophysics @ojastro.bsky.social · 28d

According to NASA/ADS, our papers have now garnered over 5,000 citations (at an average of about 14.0 per paper).

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Astrophysics Data System

A powerful, streamlined new Astrophysics Data System

ui.adsabs.harvard.edu

The Open Journal of Astrophysics @ojastro.bsky.social · 28d

New Publication at the Open Journal of Astrophysics: "Detailed Microwave Continuum Spectra from Bright Protoplanetary Disks in Taurus" by Caleb Painter (Harvard, USA) and 11 others based in the USA, Germany, Mexico and Taiwan.

doi.org/10.33232/001...

Detailed Microwave Continuum Spectra from Bright Protoplanetary Disks in Taurus | Published in The Open Journal of Astrophysics

By Caleb Painter, Sean M. Andrews & 10 more. New observations sampling the microwave (4-360 GHz) continuum spectra from eight young stellar systems in the Taurus region

The Open Journal of Astrophysics @ojastro.bsky.social · 28d

New Publication at the Open Journal of Astrophysics: "A Swift Fix II: Physical Parameters of Type I Superluminous Supernovae" by Jason T. Hinkle & Benjamin J. Shappee (U. Hawaii, USA) and Michael A. Tucke (Ohio State, USA).

doi.org/10.33232/001...

A Swift Fix II: Physical Parameters of Type I Superluminous Supernovae | Published in The Open Journal of Astrophysics

By Jason T. Hinkle, Benjamin J. Shappee & 1 more. Using recalibrated Swift photometry to recompute peak luminosities and other properties of a sample of superluminous Type I supernovae.

The Open Journal of Astrophysics @ojastro.bsky.social · 29d

New Publication at the Open Journal of Astrophysics: "Mass models of galaxy clusters from a non-parametric weak-lensing reconstruction" by Tobias Mistele (Case Western Reserve U., USA) and 4 others based in the USA, France and Italy.

doi.org/10.33232/001...

Mass models of galaxy clusters from a non-parametric weak-lensing reconstruction | Published in The Open Journal of Astrophysics

By Tobias Mistele, Federico Lelli & 3 more. A new, non-parametric deprojection method for weak gravitational lensing applied to a sample of galaxy clusters