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Low-mass dwarf galaxies ($M_{\rm vir} \lesssim 10^9\rm\ M_\odot$) are fundamental cosmological building blocks, yet the physical processes driving their structural diversity remain poorly understood. Recent numerical simulations have…

Astrophysics of Galaxies · Physics 2026-02-26 Chi-Hong Lin , Michiko S Fujii , Takayuki R Saitoh , Yutaka Hirai

We investigate the stellar mass-dependence of the galaxy size-dark matter halo radius relation for low redshift galaxies using weak gravitational lensing measurements. Our sample consists of $\sim$38,000 galaxies more massive than…

Astrophysics of Galaxies · Physics 2023-09-28 Preetish K. Mishra , Divya Rana , Surhud More

We make predictions for diffuse stellar mass fractions in dark matter halos from the scales of small spiral galaxies to those of large galaxy clusters. We use an extensively-tested analytic model for subhalo infall and evolution and…

Astrophysics · Physics 2011-02-11 Chris W. Purcell , James S. Bullock , Andrew R. Zentner

Based on the DECaLS shear catalog, we study the scaling relations between halo mass($M_{\rm h}$) and various proxies for SDSS central galaxies, including stellar mass($M_*$), stellar velocity dispersion($\sigma_*$), abundance matching halo…

Astrophysics of Galaxies · Physics 2023-11-06 Ziwen Zhang , Huiyuan Wang , Wentao Luo , Houjun Mo , Jun Zhang , Xiaohu Yang , Hao Li , Qinxun Li

The relation between galaxies and dark matter halos is of vital importance for evaluating theoretical predictions of structure formation and galaxy formation physics. We show that the widely used method of abundance matching based on dark…

The analytic "equilibrium model" for galaxy evolution using a mass balance equation is able to reproduce mean observed galaxy scaling relations between stellar mass, halo mass, star formation rate (SFR) and metallicity across the majority…

Astrophysics of Galaxies · Physics 2016-10-12 Sourav Mitra , Romeel Davé , Vimal Simha , Kristian Finlator

We use a hybrid observational/theoretical approach to study the relation between galaxy kinematics and the derived stellar and halo masses of galaxies up to z=3 as a function of stellar mass, redshift and morphology. Our observational…

Astrophysics of Galaxies · Physics 2018-08-15 Christopher J. Conselice , Jonathan W. Twite , David P. Palamara , William Hartley

This paper is the fourth in a series presenting (galaxy morphology, and thus galaxy formation)-dependent black hole mass, $M_{\rm BH}$, scaling relations. We have used a sample of 119 galaxies with directly-measured $M_{\rm BH}$ and host…

Astrophysics of Galaxies · Physics 2023-05-08 Nandini Sahu , Alister W. Graham , Benjamin L. Davis

We use an empirical approach to model the stellar mass of galaxies according to their host dark-matter haloes and subhaloes ('HASH'), where each galaxy resides in a subhalo taken from a large N-body cosmological simulation. This approach…

Cosmology and Nongalactic Astrophysics · Physics 2012-09-05 Eyal Neistein , Sadegh Khochfar

We have constructed an extended halo model (EHM) which relates the total stellar mass and star-formation rate (SFR) to halo mass (M_h). An empirical relation between the distribution functions of total stellar mass of galaxies and host halo…

We present new constraints on the relationship between galaxies and their host dark matter halos, measured from the location of the peak of the stellar-to-halo mass ratio (SHMR), up to the most massive galaxy clusters at redshift $z\sim0.8$…

A simple, observationally-motivated model is presented for understanding how halo masses, galaxy stellar masses, and star formation rates are related, and how these relations evolve with time. The relation between halo mass and galaxy…

Astrophysics · Physics 2014-11-18 Charlie Conroy , Risa H. Wechsler

We report evidence of galaxy assembly bias - the correlation between galaxy properties and biased secondary halo properties at fixed halo mass (M$_H$) - in the stellar-to-halo mass relation (SHMR) for red central galaxies from the Sloan…

Astrophysics of Galaxies · Physics 2024-10-04 Grecco A. Oyarzún , Jeremy L. Tinker , Kevin Bundy , Enia Xhakaj , J. Stuart B. Wyithe

We explore empirical constraints on the statistical relationship between the radial size of galaxies and the radius of their host dark matter halos from $z\sim 0.1$--3 using the GAMA and CANDELS surveys. We map dark matter halo mass to…

A large variance exists in the amplitude of the Stellar Mass - Halo Mass (SMHM) relation for group and cluster-size halos. Using a sample of 254 clusters, we show that the magnitude gap between the brightest central galaxy (BCG) and its…

Astrophysics of Galaxies · Physics 2018-06-13 Jesse B. Golden-Marx , Christopher J. Miller

In $\Lambda$CDM cosmology, galaxies form and evolve in their host dark matter (DM) halos. Halo mass is crucial for understanding the halo-galaxy connection. The abundance matching (AM) technique has been widely used to derive the halo…

We study the evolution of stellar mass in galaxies as a function of host halo mass, using the "MPA" and "Durham" semi-analytic models, implemented on the Millennium Run simulation. The results from both models are similar. We find that…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 Idit Zehavi , Santiago Patiri , Zheng Zheng

The rotation velocities of disc galaxies trace dark matter halo structure, providing direct constraints on the galaxy--halo connection. We construct a Bayesian forward model to connect the dark matter halo population predicted by…

Astrophysics of Galaxies · Physics 2026-01-13 Fedir Boreiko , Tariq Yasin , Harry Desmond , Richard Stiskalek , Matt J. Jarvis

We derive the stellar-to-halo mass relation (SHMR), namely $f_\star\propto M_\star/M_{\rm h}$ versus $M_\star$ and $M_{\rm h}$, for early-type galaxies from their near-IR luminosities (for $M_\star$) and the position-velocity distributions…

Astrophysics of Galaxies · Physics 2021-05-26 Lorenzo Posti , S. Michael Fall