Kinematics of the Weak Cool-Core Cluster A3571 Observed with XRISM: Low Cooling Rate Balanced by Low Heating Rate? | Published in The Open Journal of Astrophysics

By Hannah McCall, Irina Zhuravleva & 11 more. This study examines gas kinematics in the relaxed, AGN-feedback-free galaxy cluster A3571 using XRISM observations. Findings suggest sloshing motions may ...

doi.org

RUBIES: The Evolution of the Ionization Parameter from 0 < z < 9 | Published in The Open Journal of Astrophysics

By Nikko Cleri, Zach J. Lewis & 11 more. An examination of the time evolution of the ionization parameter in galaxies, finding that it increases with redshift and specific star formation rate, and dec...

doi.org

The Payne Zero Project I: Stellar Spectra from Physical Models in Seconds | Published in The Open Journal of Astrophysics

By Yuan-Sen Ting, Elliot M. Kim. The study introduces \paynezero, a tool that reorganizes stellar spectra calculations for GPU-native synthesis, significantly speeding up the process and enabling dire...

doi.org

The Cosmological Simulation Code OpenGadget3 - Implementation of Self-Interacting Dark Matter | Published in The Open Journal of Astrophysics

By Moritz S. Fischer, Marc Wiertel & 8 more. This paper discusses the use of OpenGadget3, a tool for simulating self-interacting dark matter (SIDM), and highlights its capabilities, performance, and a...

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Weak-lensing Shear-Selected Galaxy Clusters from the Hyper Suprime-Cam Subaru Strategic Program: III. A precision cosmological sample enabled by optical confirmation | Published in The Open Journal of...

By I-Non Chiu, Kai-Feng Chen & 10 more. The study develops fCAMIRA, a tool for optical cluster confirmation, applied to 129 weak-lensing galaxy clusters. It demonstrates excellent photometric-redshift...

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XID+PRIMA, II: Stepping Through Hyperspectral Imaging to Deblend PRIMAger Beyond the Extragalactic Confusion Limit | Published in The Open Journal of Astrophysics

By James M. S. Donnellan, Borja Pautasso & 11 more. The PRobe far-Infrared Mission for Astrophysics (PRIMA) uses a new Bayesian modelling approach to map large areas with unprecedented sensitivity. Ov...

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The Curious Case of Centaurus A II: On the Subject of the Quenched satellites | Published in The Open Journal of Astrophysics

By Sachi Weerasooriya, Mia Sauda Bovill & 7 more. Thi study investigates the lack of luminous satellite galaxies in Centaurus A's inner regions, suggesting that AGN-driven thermal feedback could suppr...

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A Unified Halo Mass Function Across Dark Matter Models from High-Resolution Multi-Scale Simulations | Published in The Open Journal of Astrophysics

By Andrew Benson, Ethan O. Nadler & 2 more. The study measures the dark matter halo mass function using simulations, calibrates fitting functions and models for systematics, and robustly describes the...

doi.org

Exploration of groups and outliers in Gaia RVS stellar spectra with metric learning | Published in The Open Journal of Astrophysics

By Yarden Eilat Bloch, Dovi Poznanski & 5 more. The study presents a new dataset and interactive portal that applies advanced techniques to analyze and visualize nearly a million spectra from the Gaia...

doi.org

The Power of DESI for Photometric Redshift Calibration: A Case Study with KiDS-1000 | Published in The Open Journal of Astrophysics

By Diana Blanco, Alexie Leauthaud & 65 more. This study explores using the Dark Energy Spectroscopic Instrument (DESI) to calibrate photometric redshift distributions for gravitational lensing, which could improve understanding of dark energy and cosmic structure.

doi.org

The quenching time and timescale distribution of z~2 quiescent galaxies from precise colour distribution analysis | Published in The Open Journal of Astrophysics

By Vivienne Wild, Ho-Hin Leung & 2 more. The study uses simulation-based inference to analyze galaxy formation and quenching times, revealing that galaxies must quench rapidly post-Big Bang to achieve...

doi.org

No Gravitational Anomaly in Wide Binaries from Forward Modeling of 3D Orbits | Published in The Open Journal of Astrophysics

By Serat M. Saad, Yuan-Sen Ting. The study reanalyzes a dataset on gravitational anomalies, finding results consistent with Newtonian gravity, contrary to previous findings that suggested Modified New...

doi.org

The Carousel Lens I: A Spectroscopic Survey of the Carousel Lens Field | Published in The Open Journal of Astrophysics

By Jackson H. O'Donnell, Demetrius Y. Williams & 19 more. A spectroscopic survey of the Carousel lens galaxy cluster, identifying 12 lensed sources and 57 unlensed field galaxies. The findings could h...

doi.org

A Dusty Quenching-Candidate AGN host at $z = 5.7$: massive quiescent galaxies may quench already during the dust-obscured phase | Published in The Open Journal of Astrophysics

By Francesco D'Eugenio, Matilde Brazzini & 13 more. RUBIES-EGS-9809, a dust-reddened galaxy with a dominant point-source component, suggests that AGN feedback may influence its host., indicating that ...

doi.org

Dependences of radio pulsar parameters on the kick velocity | Published in The Open Journal of Astrophysics

By Anton D. Lazarev, Sergei B. Popov. This study analyzes the velocity kick of neutron stars, finding that 23% belong to the low-velocity mode. Differences in magnetic field distribution emerge, but n...

doi.org

The Third Option: Color Phase Curves to Characterize the Atmospheres of Temperate Rocky Exoplanets | Published in The Open Journal of Astrophysics

By Drake Deming, Andrew Lincowski & 7 more. The study proposes using color phase curves to detect and characterize the atmospheres of rocky exoplanets, including non-transiting ones, by observing thei...

doi.org

Not all cores are equal: Phase-space origins of dynamical friction, stalling and buoyancy | Published in The Open Journal of Astrophysics

By Shashank Dattathri, Frank C. van den Bosch & 5 more. How the distribution function of a galaxy, not just its central density gradient, influences the efficiency and direction of dynamical friction,...

doi.org

CORRECTION - DESI Data Release 1: Stellar Catalogue | Published in The Open Journal of Astrophysics

By Sergey Koposov, Ting S. Li & 66 more. The paper "DESI Data Release 1: Stellar Catalogue" by Koposov et al. contained a Figure that was incorrect. This has now been corrected.

doi.org

How similar are narrow-line Seyfert 1 galaxies and high-z type 1 AGN? | Published in The Open Journal of Astrophysics

By Marco Berton, Emilia Järvelä & 2 more. The study reviews the properties of local narrow-line Seyfert 1 galaxies and compares them with high-redshift active galactic nuclei, aiding understanding of ...

doi.org

The neighboring stars of N6946-BH1 and the observational characteristics of failed supernovae | Published in The Open Journal of Astrophysics

By Raquel Forés-Toribio, C. S. Kochanek. The study re-analyzes images of potential failed supernova N6946-BH1, finding four unrelated near-infrared neighbors. It also compares the luminosity of failed...

doi.org

SCAT Data Release 1: 1812 optical spectra of 1331 transients | Published in The Open Journal of Astrophysics

By Michael A Tucker, Mark E. Huber & 20 more. The first data release of the Spectroscopic Classification of Astronomical Transients survey includes 1812 spectra of 1331 transients, offering valuable i...

doi.org

Modeling Carbon-Based Planets with MAGRATHEA | Published in The Open Journal of Astrophysics

By Robert L Royer, David R Rice & 1 more. A modification of the planetary interior solver MAGRATHEA to include Carbon-based mantles to enable it to understand more fully the range of possible planet s...

doi.org

The Impact of Non-Gaussian Line Spread Functions on Stellar Kinematic Recovery: Consequences for Dynamical Models | Published in The Open Journal of Astrophysics

By David A. Simon. The study explores the impact of non-Gaussian line spread function (LSF) profiles on stellar kinematics recovery. A method was developed to reduce bias in dispersion, with a Python ...

doi.org

Impact and interplay of $Λ$CDM analysis choices for LSST cosmic shear | Published in The Open Journal of Astrophysics

By Naomi Clare Robertson, C. Heymans & 12 more. The study forecasts cosmological parameter constraints for a cosmic shear analysis of the Rubin Observatory Legacy Survey of Space and Time (LSST), emph...

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Assessing Self-Absorbed Molecular Lines as Tracers of Gravitational Collapse | Published in The Open Journal of Astrophysics

By Lillian Y. Cai, Felix D. Priestley & 1 more. This study reveals that traditional observational techniques likely underestimate true infall velocities and mass accretion rates in collapsing prestell...

doi.org

Visualizing Disequilibrium: Tracing Two-Point Correlations to Specific Spatial Structures in the Milky Way | Published in The Open Journal of Astrophysics

By Austin Hinkel, Josephine Vanzant. This paper presents an algorithm that enhances the Two-Point Correlation Function, enabling detailed visualization of spatial clustering and complex structures in ...

doi.org

Our First "Full House"! | Published by The Open Journal of Astrophysics

This week is the first week in which we have published a full house of at least one paper in each of the six sections of astro-ph.

astro.theoj.org

The major cluster merger in Abell 2034 as seen by XRISM: Strong turbulence and spectral anomalies? | Published in The Open Journal of Astrophysics

By Annie Heinrich, Irina Zhuravleva & 6 more. This study presents XRISM observations of the merging cluster Abell 2034, revealing the broadest emission lines yet seen in a galaxy cluster, indicating p...

doi.org