中文
相关论文

相关论文: Central galaxies in different environments: Do the…

200 篇论文

Using a sample of 25683 star-forming and 2821 passive galaxies at $z\sim2$, selected in the COSMOS field following the BzK color criterion, we study the hosting halo mass and environment of galaxies as a function of their physical…

Stellar halos are the only major stellar component of disk galaxies that lack systematic observational characterization, yet they encode critical information about galaxy merger histories. We present the first systematic census of stellar…

We present an observational study of the stellar mass function of satellite galaxies around central galaxies at 0.2<z<1.2. Using statistical background subtraction of contaminating sources we derive satellite stellar mass distributions in…

星系天体物理 · 物理学 2014-05-21 Tomer Tal , Ryan F. Quadri , Adam Muzzin , Danilo Marchesini , Mauro Stefanon

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…

天体物理学 · 物理学 2014-11-18 Charlie Conroy , Risa H. Wechsler

We are entering an era in which we will be able to detect and characterize hundreds of dwarf galaxies within the Local Volume. It is already known that a strong dichotomy exists in the gas content and star formation properties of field…

The stellar content of galaxies is tightly connected to the mass and growth of their host dark matter halos. Observational constraints on this relation remain limited, particularly for low-mass groups, leaving uncertainties in how galaxies…

We present a statistical study of the environments of massive galaxies in four redshift bins between z=0.04 and z=1.6, using data from the Sloan Digital Sky Survey (SDSS) and the NEWFIRM Medium Band Survey (NMBS). We measure the projected…

宇宙学与河外天体物理 · 物理学 2015-06-15 Tomer Tal , Pieter G. van Dokkum , Marijn Franx , Joel Leja , David A. Wake , Katherine E. Whitaker

Observations have shown that the spatial distribution of satellite galaxies is not random, but rather is aligned with the major axes of central galaxies (CGs). The strength of the alignment is dependent on the properties of both the…

宇宙学与河外天体物理 · 物理学 2014-08-08 Xuce Dong , Weipeng Lin , Xi Kang , Yang O. Wang , Aaron A. Dutton , Andrea V. Macciò

Recent studies emphasize that an empirical relation between the stellar mass of galaxies and the mass of their host dark matter subhaloes can predict the clustering of galaxies and its evolution with cosmic time. In this paper we study the…

宇宙学与河外天体物理 · 物理学 2011-09-07 Eyal Neistein , Simone M. Weinmann , Cheng Li , Michael Boylan-Kolchin

We present new results on the relationship between central galaxies and dark matter haloes inferred from observations of satellite kinematics in the Sloan Digital Sky Survey (SDSS) DR7. We employ an updated analysis framework that includes…

宇宙学与河外天体物理 · 物理学 2022-07-22 Johannes U. Lange , Frank C. van den Bosch , Andrew R. Zentner , Kuan Wang , Antonia S. Villarreal

There is still much debate surrounding how the most massive, central galaxies in the local universe have assembled their stellar mass, especially the relative roles of in-situ growth versus later accretion via mergers. In this paper, we set…

星系天体物理 · 物理学 2016-08-25 Stewart Buchan , Francesco Shankar

Supermassive black holes and/or very dense stellar clusters are found in the central regions of galaxies. Nuclear star clusters are present mainly in faint galaxies while upermassive black holes are common in galaxies with masses $\geq…

星系天体物理 · 物理学 2017-10-11 R. Capuzzo-Dolcetta , I. Tosta e Melo

We investigate how the specific star formation rates of galaxies of different masses depend on cluster-centric radius and on the central/satellite dichotomy in both field and cluster environments. Recent data from a variety of sources,…

星系天体物理 · 物理学 2015-05-14 Simone M. Weinmann , Guinevere Kauffmann , Anja von der Linden , Gabriella De Lucia

The clustering of dark halos depends not only on their mass but also on their assembly history, a dependence we term `assembly bias'. Using a galaxy formation model grafted onto the Millennium Simulation of the LCDM cosmogony, we study how…

天体物理学 · 物理学 2009-09-29 Darren J. Croton , Liang Gao , Simon D. M. White

We study the formation and evolution of stellar halos (SHs) around bright central galaxies (BCGs), focusing on their scaling relations, colors, and metallicities across cosmic time, and compare model predictions with ultra--deep imaging…

星系天体物理 · 物理学 2026-04-29 Emanuele Contini , Marilena Spavone , Rossella Ragusa , Enrica Iodice , Sukyoung K Yi

We measure the evolution in the virial mass-to-light ratio (M_{200}/L_B) and virial-to-stellar mass ratio (M_{200}/M_\ast) for isolated ~ L* galaxies between z~1 and z~0 by combining data from the DEEP2 Galaxy Redshift Survey and the Sloan…

We conduct a comprehensive analysis of the relationship between central galaxies and their host dark matter halos, as characterized by the stellar mass-halo mass (SM-HM) relation, with rigorous consideration of uncertainties. Our analysis…

宇宙学与河外天体物理 · 物理学 2010-06-15 Peter S. Behroozi , Charlie Conroy , Risa H. Wechsler

We quantitatively investigate the dependence of central galaxy HI mass ($M_{\rm HI}$) on the stellar mass ($M_\ast$), halo mass ($M_{\rm h}$), star formation rate (SFR), and central stellar surface density within 1 kpc ($\Sigma_1$), taking…

星系天体物理 · 物理学 2021-09-29 Hong Guo , Michael G. Jones , Jing Wang , Lin Lin

We study 379 central and 159 satellite early-type galaxies with two-dimensional kinematics from the integral-field survey Mapping Nearby Galaxies at APO (MaNGA) to determine how their angular momentum content depends on stellar and halo…