Results 21 to 30 of about 188 (137)

Galaxy protocluster candidates at 1.6 [PDF]

Astronomy & Astrophysics, 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, Vernet, Joel, De Breuck, Carlos, Hatch, Nina, Miley, George, Kodama, Tadayuki, Kurk, Jaron, Overzier, Roderik, Rettura, Alessandro, Rottgering, Huub, Seymour, Nick, Venemans, Bram, Zirm, Andrew   +12 more
openaire   +6 more sources

Herschel protocluster survey: a search for dusty star-forming galaxies in protoclusters atz= 2–3 [PDF]

Monthly Notices of the Royal Astronomical Society, 2016
We present a Herschel/SPIRE survey of three protoclusters at z=2-3 (2QZCluster, HS1700, SSA22). Based on the SPIRE colours (S350/S250 and S500/S350) of 250 $ $m sources, we selected high redshift dusty star-forming galaxies potentially associated with the protoclusters.
Kato, Y., Matsuda, Y., Smail, I., Swinbank, A.M., Hatsukade, B., Umehata, H., Tanaka, I., Saito, T., Iono, D., Tamura, Y., Kohno, K., Erb, D.K., Lehmer, B.D., Geach, J.E., Steidel, C.C., Alexander, D.M., Yamada, T., Hayashino, T.   +17 more
openaire   +4 more sources

Star formation and chemical enrichment in protoclusters

Monthly Notices of the Royal Astronomical Society, 2023
ABSTRACT We examine star formation and chemical enrichment in protoclusters (PCs) using cosmological zoom-in hydrodynamic simulations. We find that the total star formation rate (SFR) in all PC ($\gt 10^{14.4}\, h^{-1}$ M⊙) reaches $\gt 10^4\, \mathrm{M}_\odot \mathrm{yr}^{-1}$ at z = 3, equivalent to the observed PCs.
Keita Fukushima, Kentaro Nagamine, Ikkoh Shimizu   +2 more
openaire   +2 more sources

Competitive accretion in the protocluster G10.6−0.4? [PDF]

Monthly Notices of the Royal Astronomical Society, 2013
9 pages, 9 figures, 2 tables, Submitted to ...
Liu, Tie, Wu, Yuefang, Wu, Jingwen, Qin, Sheng-Li, Zhang, Huawei   +4 more
openaire   +2 more sources

COSMOS2020: Identification of High-z Protocluster Candidates in COSMOS [PDF]

The Astrophysical Journal, 2023
Abstract We conduct a systematic search for protocluster candidates at z ≥ 6 in the Cosmic Evolution Survey (COSMOS) field using the recently released COSMOS2020 source catalog. We select galaxies using a number of selection criteria to obtain a sample of galaxies that have a high probability of being inside a given redshift bin. We then
Malte Brinch, Thomas R. Greve, John R. Weaver, Gabriel Brammer, Olivier Ilbert, Marko Shuntov, Shuowen Jin, Daizhong Liu, Clara Giménez-Arteaga, Caitlin M. Casey, Iary Davidson, Seiji Fujimoto, Anton M. Koekemoer, Vasily Kokorev, Georgios Magdis, H. J. McCracken, Conor J. R. McPartland, Bahram Mobasher, David B. Sanders, Sune Toft, Francesco Valentino, Giovanni Zamorani, Jorge Zavala, The COSMOS Team   +23 more
openaire   +6 more sources

MOLECULAR OUTFLOWS FROM THE PROTOCLUSTER SERPENS SOUTH [PDF]

The Astrophysical Journal, 2011
25 pages, 16 figures, accepted for publication in ...
Nakamura, Fumitaka, Sugitani, Koji, Shimajiri, Yoshito, Tsukagoshi, Takashi, Higuchi, Aya E., Nishiyama, Shogo, Kawabe, Ryohei, Takami, Michihiro, Karr, Jennifer L., Gutermuth, Robert A., Wilson, Grant   +10 more
openaire   +2 more sources

DEIMOS spectroscopy of z = 6 protocluster candidate in COSMOS – a massive protocluster embedded in a large-scale structure? [PDF]

Monthly Notices of the Royal Astronomical Society, 2023
ABSTRACT We present the results of our Keck/DEep Imaging Multi-Object Spectrograph spectroscopic follow-up of candidate galaxies of i-band-dropout protocluster candidate galaxies at z ∼ 6 in the COSMOS field. We securely detect Lyman α emission lines in 14 of the 30 objects targeted, 10 of them being at z = 6 with a signal-to-noise ratio
Malte Brinch, Thomas R Greve, David B Sanders, Conor J R McPartland, Nima Chartab, Steven Gillman, Aswin P Vijayan, Minju M Lee, Gabriel Brammer, Caitlin M Casey, Olivier Ilbert, Shuowen Jin, Georgios Magdis, H J McCracken, Nikolaj B Sillassen, Sune Toft, Jorge A Zavala   +16 more
openaire   +5 more sources

Environmental Impacts on the Rest-frame UV Size and Morphology of Star-forming Galaxies at z ∼ 2

The Astrophysical Journal, 2023
We report the measurement of rest-frame UV size and morphology of H α -emission-selected star-forming galaxies (HAEs) in four protoclusters at z ∼ 2 (PKS 1138-262, USS 1558-003, PHz G237.0+42.5, and CC 2.2) using archival Hubble Space Telescope Advanced ...
Abdurrahman Naufal, Yusei Koyama, Rhythm Shimakawa, Tadayuki Kodama   +3 more
doaj   +1 more source

The Structures and Kinematics of Protoclusters [PDF]

Symposium - International Astronomical Union, 2004
Embedded clusters produce the greatest numbers of stars within our Galaxy but the process by which clusters themselves form is not well understood. The structures and kinematics of the very youngest embedded clusters, i.e., “protoclusters” with ages <106 yr, should provide needed insight.
openaire   +2 more sources

Protoclusters in the ΛCDM Universe

The Astrophysical Journal, 2006
We compare the highly clustered populations of very high redshift galaxies with protoclusters identified numerically in a standard ΛCDM universe (Ω0 = 0.3, λ0 = 0.7) simulation. We evolve 2563 dark matter particles in a comoving box of side 150 h-1 Mpc.
Tamon Suwa, Asao Habe, Kohji Yoshikawa
openaire   +1 more source