Results 111 to 120 of about 37,989 (204)

Dependence of galaxy stellar properties on the primordial spin factor

Journal of Cosmology and Astroparticle Physics
Abstract We present a numerical discovery that the observable stellar properties of present galaxies retain significant dependences on the primordial density and tidal fields. Analyzing the galaxy catalogs from the TNG300-1 simulations, we first compute the primordial spin factor, τ, defined as the mean degree of misalignments between ...
Jun-Sung Moon, Jounghun Lee
openaire   +2 more sources

The Velocity Dispersion Function for Quiescent Galaxies in Massive Clusters from IllustrisTNG

The Astrophysical Journal
We derive the central stellar velocity dispersion function (VDF) for quiescent galaxies in 280 massive clusters with $\mathrm{log}({M}_{200}/{M}_{\odot })\gt 14$ in IllustrisTNG300. The VDF is an independent tracer of the dark matter mass distribution of
Jubee Sohn, Margaret J. Geller, Josh Borrow, Mark Vogelsberger   +3 more
doaj   +1 more source

Spatially resolved stellar populations and emission line properties in nearby galaxies with J-PLUS

Astronomy & Astrophysics
Aims. We aim to characterize the spatially resolved stellar population and emission-line properties of galaxies in the M51 group using the same methodology previously applied to the M101 group, ultimately seeking to understand how environmental processes
Thainá-Batista J., Cid Fernandes R., González Delgado R. M., Rodríguez-Martín J. E., García-Benito R., Díaz-García L. A., Martínez-Solaeche G., Ruschel-Dutra D., Sasse V. H., Cenarro A. J., Cristóbal-Hornillos D., Hernández-Monteagudo C., López-Sanjuan C., Marín-Franch A., Moles M., Varela J., Vázquez Ramió H., Alcaniz J., Dupke R. A., Ederoclite A., Sodré L., Angulo R. E.   +21 more
doaj   +1 more source

Diverse Oxygen Abundance in Early Galaxies Unveiled by Auroral Line Analysis with JWST

The Astrophysical Journal
We present deep JWST NIRSpec observations in the sight line of MACS J1149.5+2223, a massive cluster of galaxies at z = 0.54. We report the spectroscopic redshift of 28 sources at 3 < z < 9.1, including nine sources with the detection of the ${\left[{\rm ...
Takahiro Morishita, Massimo Stiavelli, Claudio Grillo, Piero Rosati, Stefan Schuldt, Michele Trenti, Pietro Bergamini, Kit Boyett, Ranga-Ram Chary, Nicha Leethochawalit, Guido Roberts-Borsani, Tommaso Treu, Eros Vanzella   +12 more
doaj   +1 more source

Dwarf galaxies as a probe of a primordially magnetized Universe

Astronomy & Astrophysics
Aims. The true nature of primordial magnetic fields (PMFs) and their role in the formation of galaxies remains elusive. To shed light on these unknowns, we investigated their impact by varying two sets of properties: (i) accounting for the effect of PMFs on the initial matter power spectrum and (ii) accounting for their magneto-hydrodynamical effects ...
Mahsa Sanati, Sergio Martin-Alvarez, Jennifer Schober, Yves Revaz, Adrianne Slyz, Julien Devriendt   +5 more
openaire   +2 more sources

The Supersonic Project: Lighting Up the Faint End of the JWST UV Luminosity Function

The Astrophysical Journal Letters
The James Webb Space Telescope (JWST) is capable of probing extremely early eras of our Universe, when the supersonic relative motions between dark matter and baryonic overdensities modulate structure formation ( z ≳ 10).
Claire E. Williams, William Lake, Smadar Naoz, Blakesley Burkhart, Tommaso Treu, Federico Marinacci, Yurina Nakazato, Mark Vogelsberger, Naoki Yoshida, Gen Chiaki, Yeou S. Chiou, Avi Chen   +11 more
doaj   +1 more source

The contribution of galaxies to the magnetic field in cosmic voids

Astronomy & Astrophysics
Context. Astrophysical processes can contribute to magnetic fields within cosmic voids either through magnetized outflows from the astrophysical large-scale structure or through the superposition of dipolar contributions from individual galaxies.
Seller K., Sigl G.
doaj   +1 more source

The Dual Nature of GHZ9: Coexisting Active Galactic Nuclei and Star Formation Activity in a Remote X-Ray Source at z = 10.145

The Astrophysical Journal
We present James Webb Space Telescope (JWST)/NIRSpec PRISM spectroscopic characterization of GHZ9 at z = 10.145 ± 0.010, currently the most distant source detected by the Chandra X-ray Observatory.
Lorenzo Napolitano, Marco Castellano, Laura Pentericci, Cristian Vignali, Roberto Gilli, Adriano Fontana, Paola Santini, Tommaso Treu, Antonello Calabrò, Mario Llerena, Enrico Piconcelli, Luca Zappacosta, Sara Mascia, Roberta Tripodi, Pablo Arrabal Haro, Pietro Bergamini, Tom J. L. C. Bakx, Mark Dickinson, Karl Glazebrook, Alaina Henry, Nicha Leethochawalit, Giovanni Mazzolari, Emiliano Merlin, Takahiro Morishita, Themiya Nanayakkara, Diego Paris, Simonetta Puccetti, Guido Roberts-Borsani, Sofia Rojas Ruiz, Piero Rosati, Eros Vanzella, Fabio Vito, Benedetta Vulcani, Xin Wang, Ilsang Yoon, Jorge A. Zavala   +35 more
doaj   +1 more source

Primordial Turbulence and the FORMAT10N of Galaxies

The Astrophysical Journal, 1972
Joseph Silk, Susan Ames
openaire   +1 more source

Local Analogs of Primordial Galaxies: In Search of Intermediate-mass Black Holes with JWST NIRSpec

The Astrophysical Journal
Local low-metallicity galaxies with signatures of possible accretion activity are ideal laboratories in which to search for the lowest-mass black holes and study their impact on the host galaxy.
Sara Doan, Shobita Satyapal, William Matzko, Nicholas P. Abel, Torsten Böker, Thomas Bohn, Gabriela Canalizo, Jenna M. Cann, Jacqueline Fischer, Stephanie LaMassa, Suzanne C. Madden, Jeffrey D. McKaig, D. Schaerer, Nathan J. Secrest, Anil Seth, Laura Blecha, Mallory Molina, Barry Rothberg   +17 more
doaj   +1 more source