most citedCharacterizing the host galaxies and delay times of Ca-rich gap transients vs 91bg-like SNe and normal Type Ia SNe

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astro-ph.GA2025

DREAMS.II. Galaxy Demographics from Direct Te-Based Metallicities at z~2-10: Tracing the Evolution of the Mass-Metallicity and Fundamental Relations

Moka Nishigaki, Kimihiko Nakajima, Masami Ouchi +6

We present the statistics of line ratios and direct Te-based metallicities from JWST medium-resolution spectra of 292 galaxies at z=2-10, combining DREAMS observations with those o…

astro-ph.GA2025

Machine Learning the Dark Matter Halo Mass of the Milky Way

Elaheh Hayati, Peter Behroozi, Ekta Patel +3

Although numerous dynamical techniques have been developed to estimate the total dark matter halo mass of the Milky Way, it remains poorly constrained, with typical systematic unce…

astro-ph.GA2025

Halo Properties from Observable Measures of Environment: II. Central versus Satellite Classification

Haley Bowden, Peter Behroozi

A physical understanding of galaxy formation and evolution benefits from an understanding of the connections between galaxies, their host dark matter halos, and their environments.…

astro-ph.GA2025

Insights into the dependence of galaxy properties on the environment with explainable machine learning models

Shun-ya S. Uchida, Suchetha Cooray, Atsushi J. Nishizawa +2

Galaxies reside within dark matter halos, but their properties are influenced not only by their halo properties but also by the surrounding environment. We construct an interpretab…

astro-ph.GA2025

Lonely Little Red Dots: Challenges to the AGN-nature of little red dots through their clustering and spectral energy distributions

María Carranza-Escudero, Christopher J. Conselice, Nathan Adams +31

Observations with the James Webb Space Telescope (JWST) reveal a previously unseen population of compact red objects, known as ``little red dots`` (LRDs). We study a new photometri…

astro-ph.GA2025

A Promise for the JWST era: Massive black holes directly collapsed from wave dark matter haloes, and Star formation in and around their accretion flows

Xiaobo Dong, Yongda Zhu, Marcia Rieke +7

There are several puzzling phenomena from recent JWST observations, which seem to push the standard ΛCDM cosmology over the edge. All those puzzles can be understood in a coherent…