Results 111 to 120 of about 2,272 (184)

Kinematic Analysis of z = 4.3 Galaxies in the SPT2349–56 Protocluster Core

open access: yesThe Astrophysical Journal
SPT2349−56 is a protocluster discovered in the 2500 deg ^2 South Pole Telescope (SPT) survey. In this paper, we study the kinematics of the galaxies found in the core of SPT2349−56 using high-resolution (1.55 kpc spatial resolution at z = 4.303 ...
Aparna Venkateshwaran   +12 more
doaj   +1 more source

The Timescales of Embedded Star Formation as Observed in STARFORGE

open access: yesThe Astrophysical Journal
Star formation occurs within dusty molecular clouds that are then disrupted by stellar feedback. However, the timing and physical mechanisms that govern the transition from deeply embedded to exposed stars remain uncertain.
Tobin M. Wainer   +9 more
doaj   +1 more source

Understanding Accretion Outbursts in Massive Protostars through Maser Imaging

open access: yes, 2019
The bright maser emission produced by several molecular species at centimeter to long millimeter wavelengths provides an essential tool for understanding the process of massive star formation. Unimpeded by the high dust optical depths that affect shorter
Bartkiewicz, Anna   +10 more
core  

Protoclusters as drivers of stellar mass growth in the early Universe, a case study: Taralay – a massive protocluster at z ∼ 4.57

open access: yesMonthly Notices of the Royal Astronomical Society
ABSTRACT Simulations predict that the galaxy populations inhabiting protoclusters may contribute considerably to the total amount of stellar mass growth of galaxies in the early universe. In this study, we test these predictions observationally, using the Taralay protocluster (formerly PCl J1001+0220) at z ∼ 4.57 in the COSMOS field ...
Priti Staab   +28 more
openaire   +2 more sources

Selecting Clusters and Protoclusters via Stellar Mass Density. II. Application to HSC-SSP Observations

open access: yesThe Astrophysical Journal
We present a selection of candidates of clusters and protoclusters of galaxies identified in the photometric data of the HSC-SSP Wide Public Data Release 3 (PDR3), spanning the redshift range 0.1 ≤ z ≤ 2. The selection method, detailed in Vicentin et al.,
Marcelo C. Vicentin   +4 more
doaj   +1 more source

Modelling the multi-wavelength detection of protoclusters. I: An excess of submillimetre galaxies in protocluster cores

open access: yes
Studies of galaxy protoclusters yield insights into galaxy cluster formation complementary to those obtained via `archaeological' studies of present-day galaxy clusters. Submillimetre-selected galaxies (SMGs) are one class of sources used to find high-redshift protoclusters.
Araya-Araya, Pablo   +8 more
openaire   +2 more sources

A search for quasar protoclusters at z greater than 4 [PDF]

open access: yes
In the CDM and many other hierarchical scenarios for the origins of large scale structure, the existence of luminous quasars at very high redshifts (z greater than 3 or 4) is difficult to understand, unless such objects form at the very highest peaks of ...
Djorgovski, S.   +2 more
core   +1 more source

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