Results 1 to 10 of about 323,312 (315)

High redshift radio galaxies [PDF]

SPIE Proceedings, 2000
There is considerable evidence that powerful radio quasars and radio galaxies are orientation-dependent manifestations of the same parent population: massive spheroids containing correspondingly massive black holes.
R. A. E. Fosbury
core   +6 more sources

Simulating high-redshift galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 2011
Recent observations have gathered a considerable sample of high redshift galaxy candidates and determined the evolution of their luminosity function (LF). To interpret these findings, we use cosmological SPH simulations including, in addition to standard
Ahn, Andrea Ferrara, Atek, Berger E., Bianchi, Bolton, Bolton, Bouwens, Bouwens, Bouwens, Bouwens, Bradley, Choudhury, Choudhury, Daigne, Dayal, Dayal, Dayal, di Serego Alighieri, Eyles, Ferrara, Finkelstein, Finlator, Fryer, Giavalisco, Governato, Grindlay, Haardt, Haiman, Heger, Hirschi, Iye, Jimenez, Kashikawa, Kawai, Komissarov, Labbé, Lai, Leitherer, Mac, MacFadyen, Madau, Madau, Malhotra, Mao, McKee, Nagamine, Nagamine, Nagao, Nozawa, Oesch, Okamoto, Ouchi, Pratika Dayal, Richard, Ruben Salvaterra, Salvadori, Salvaterra, Salvaterra, Salvaterra, Salvaterra, Samui, Savaglio, Scannapieco, Schaerer, Schaerer, Schneider, Schneider, Schneider, Schneider, Shapley, Shimasaku, Spergel, Springel, Springel, Stark, Steidel, Stiavelli, Susa, Taniguchi, Tanvir, Todini, Tornatore, Trenti, Valiante, Vazquez, Yan, Yoon   +87 more
core   +7 more sources

Simulations of High-redshift [O iii] Emitters: Chemical Evolution and Multiline Diagnostics

The Astrophysical Journal, 2023
Recent observations by the James Webb Space Telescope discovered a number of high-redshift galaxies with strong emission lines from doubly ionized oxygen.
Yurina Nakazato, Naoki Yoshida, Daniel Ceverino   +2 more
doaj   +1 more source

swPHoToNs: Toward trillion‐body‐scale cosmological N‐body simulations on Sunway TaihuLight supercomputer

Engineering Reports, EarlyView., 2023
We present the details of implementing a highly efficient and scalable Cosmological N‐body simulation framework on the heterogeneous many‐core supercomputer Sunway TaihuLight. We manage to conduct cosmological simulations which contain up to 1.6 trillion particles, obtaining a sustained performance of 56.3 PFlops with a weak‐scaling parallel efficiency
Zhao Liu, Qiao Wang, Xiaojing Lv, Xu Liu, Hongsong Meng, Guanghui Zhu, Liang Gao, Haohuan Fu, Guangwen Yang   +8 more
wiley   +1 more source

The GLASS-JWST Early Release Science Program. II. Stage I Release of NIRCam Imaging and Catalogs in the Abell 2744 Region

The Astrophysical Journal, 2023
We present images and a multiwavelength photometric catalog based on all of the JWST NIRCam observations obtained to date in the region of the Abell 2744 galaxy cluster.
Diego Paris, Emiliano Merlin, Adriano Fontana, Andrea Bonchi, Gabriel Brammer, Matteo Correnti, Tommaso Treu, Kristan Boyett, Antonello Calabrò, Marco Castellano, Wenlei Chen, Lilan Yang, Karl Glazebrook, Patrick Kelly, Anton M. Koekemoer, Nicha Leethochawalit, Sara Mascia, Charlotte Mason, Takahiro Morishita, Mario Nonino, Laura Pentericci, Gianluca Polenta, Guido Roberts-Borsani, Paola Santini, Michele Trenti, Eros Vanzella, Benedetta Vulcani, Rogier A. Windhorst, Themiya Nanayakkara, Xin Wang   +29 more
doaj   +1 more source

Extreme N-emitters at high-redshift: signatures of supermassive stars and globular cluster or black hole formation in action? [PDF]

A&A 681, A30 (2024), 2023
[Abridged] Using the JWST/NIRSpec observations from CEERS we found an extreme N-emitter, CEERS-1019 at z=8.6782 showing intense NIV and NIII emission. From the observed rest-UV and optical lines we conclude that it is compatible with photoionization from stars and we determine accurate abundances for C, N, O, and Ne, relative to H, finding a highly ...
arxiv   +1 more source

Galaxy formation at high redshifts [PDF]

Nature, 1996
Sensitive optical surveys have revealed a large population of `faint blue galaxies' which are believed to be young galaxies, observed close to their time of formation. But there has been considerable uncertainty regarding the epochs at which these galaxies are observed, owing to the difficulties inherent in determining spectroscopic redshifts for very ...
Richard Fong, Ana Campos, Ana Campos, Tom Shanks, J. P. Gardner, Nigel Metcalfe   +5 more
openaire   +4 more sources

A Large-scale Kinematic Study of Molecular Gas in High-z Cluster Galaxies: Evidence for High Levels of Kinematic Asymmetry

The Astrophysical Journal, 2023
We investigate the resolved kinematics of the molecular gas, as traced by the Atacama Large Millimeter/submillimeter Array in CO (2−1), of 25 cluster member galaxies across three different clusters at a redshift of z ∼ 1.6.
W. J. Cramer, A. G. Noble, K. Massingill, J. Cairns, D. L. Clements, M. C. Cooper, R. Demarco, J. Matharu, M. McDonald, A. Muzzin, J. Nantais, G. Rudnick, H. Übler, E. van Kampen, T. M. A. Webb, G. Wilson, H. K. C. Yee   +16 more
doaj   +1 more source

Searching for high-z DSFGs with NIKA2 and NOEMA [PDF]

EPJ Web of Conferences, 2022
As the possible progenitors of passive galaxies at z=2-3, dusty starforming galaxies (DSFGs) at z>4 provide a unique perspective to study the formation, assembly, and early quenching of massive galaxies in the early Universe.
Bing L., Adam R., Ade P., Ajeddig H., André P., Artis E., Aussel H., Beelen A., Benoît A., Berta S., Béthermin M., Bourrion O., Calvo M., Catalano A., De Petris M., Désert F.-X., Doyle S., Driessen E. F. C., Gomez A., Goupy J., Kéruzoré F., Kramer C., Ladjelate B., Lagache G., Leclercq S., Lestrade J.-F., Macías-Pérez J.-F., Maury A., Mauskopf P., Mayet F., Monfardini A., Muñoz-Echeverría M., Neri R., Omont A., Perotto L., Pisano G., Ponthieu N., Revéret V., Rigby A.J., Ritacco A., Romero C., Roussel H., Ruppin F., Schuster K., Shu S., Sievers A., Tucker C., Zylka R.   +47 more
doaj   +1 more source

The Puzzling Properties of the MACS1149-JD1 Galaxy at z = 9.11

The Astrophysical Journal Letters, 2023
We analyze new JWST NIRCam and NIRSpec data on the redshift 9.11 galaxy MACS1149-JD1 (hereafter JD1). Our NIRCam imaging data reveal that JD1 comprises three spatially distinct components. Our spectroscopic data indicate that JD1 appears dust free but is
Massimo Stiavelli, Takahiro Morishita, Marco Chiaberge, Claudio Grillo, Nicha Leethochawalit, Piero Rosati, Stefan Schuldt, Michele Trenti, Tommaso Treu   +8 more
doaj   +1 more source