Results 151 to 160 of about 1,021 (168)

SCUBA-2 observations of candidate starbursting protoclusters selected by Planck and Herschel-SPIRE [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2019
We present SCUBA-2 850-μm observations of 13 candidate starbursting protoclusters selected using Planck and Herschel data. The cumulative number counts of the 850-μm sources in 9/13 of these candidate protoclusters show significant overdensities compared
Helmut Dannerbauer   +2 more
exaly   +3 more sources

ΛCDM predictions for galaxy protoclusters - I. The relation between galaxies, protoclusters and quasars at [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2009
Accepted by MNRAS (19 pages, 20 figures, 2 tables).
Gerard Lemson   +2 more
exaly   +6 more sources

Star-forming protoclusters

2022
The Λ cold dark matter (ΛCDM) model accurately reproduces many notable observations of our Universe, such as the existence of galaxy clusters embedded in a cosmic web. However, there remain many open questions about the physics governing baryons on galaxy cluster scales that the ΛCDM model cannot address, such as how star-formation is triggered and ...
openaire   +1 more source

Quasars as protoclusters of galaxies

Astrophysics, 1972
A hypothesis is put forward according to which dense bodies (QSG), which occasionally transform into quasars, decay into components and their subsequent fragmentation results in the formation of groups and clusters of galaxies. Recurrent nonthermal radio emission continues during all the subsequent stages of fragmentation and evolution of the QSG's ...
openaire   +1 more source

Identifying protoclusters in distant universe

Astronomische Nachrichten, 2021
AbstractProperties of galaxies, such as color, age, and star formation activity, appear to be associated with the environment in which they are immersed. To investigate how the environment‐galaxy relation is established, we study protoclusters, which are numerically dense environments of galaxies in the early Universe, and which give rise to galaxy ...
Mariana Rubet da Costa   +1 more
openaire   +1 more source

Galaxy protocluster candidates at 1.6

2010
We present a study of protoclusters associated with high redshift radio galaxies. We imaged MRC1017-220 (z=1.77) and MRC0156-252 (z=2.02) using the near-infrared wide-field (7.5'x7.5') imager VLT/HAWK-I in the Y, H and Ks bands. We present the first deep Y-band galaxy number counts within a large area (200 arcmin2).
Galametz, Audrey   +12 more
openaire   +1 more source

Massive Protostars and Small Protoclusters

2008
Recent investigations of massive protostellar candidates in the near-infrared (NIR) wavelengths reveal several 2μm visible embedded clusters, NIR counterparts to massive star precursors and H2 emission in the shape of rings and flared disks around the massive protostars.
openaire   +1 more source

Pinning down protoclusters

Nature Astronomy, 2023
openaire   +1 more source

Characterizing Protoclusters and Protogroups at z ∼ 2.5 Using Lyα Tomography

Astrophysical Journal, 2022
Simeon Bird   +2 more
exaly  

Finding protoclusters to trace galaxy evolution – I. The finder and its performance

Monthly Notices of the Royal Astronomical Society, 2021
Yangyao Chen, Cheng Li
exaly  

Home - About - Disclaimer - Privacy