Results 41 to 50 of about 3,286 (161)

CEERS Key Paper. V. Galaxies at 4 < z < 9 Are Bluer than They Appear–Characterizing Galaxy Stellar Populations from Rest-frame ∼1 μm Imaging

The Astrophysical Journal Letters, 2023
We present results from the Cosmic Evolution Early Release Survey on the stellar population parameters for 28 galaxies with redshifts 4 < z < 9 using imaging data from the James Webb Space Telescope (JWST) Mid-Infrared Instrument (MIRI) combined with ...
Casey Papovich, Justin W. Cole, Guang Yang, Steven L. Finkelstein, Guillermo Barro, Véronique Buat, Denis Burgarella, Pablo G. Pérez-González, Paola Santini, Lise-Marie Seillé, Lu Shen, Pablo Arrabal Haro, Micaela B. Bagley, Eric F. Bell, Laura Bisigello, Antonello Calabrò, Caitlin M. Casey, Marco Castellano, Katherine Chworowsky, Nikko J. Cleri, Luca Costantin, M. C. Cooper, Mark Dickinson, Henry C. Ferguson, Adriano Fontana, Mauro Giavalisco, Andrea Grazian, Norman A. Grogin, Nimish P. Hathi, Benne W. Holwerda, Taylor A. Hutchison, Jeyhan S. Kartaltepe, Lisa J. Kewley, Allison Kirkpatrick, Dale D. Kocevski, Anton M. Koekemoer, Rebecca L. Larson, Arianna S. Long, Ray A. Lucas, Laura Pentericci, Nor Pirzkal, Swara Ravindranath, Rachel S. Somerville, Jonathan R. Trump, Stephanie M. Urbano Stawinski, Benjamin J. Weiner, Stephen M. Wilkins, L. Y. Aaron Yung, Jorge A. Zavala   +48 more
doaj   +1 more source

The energetics, evolution, and stellar depletion of $\mathsf{^6}$Li in the early Galaxy [PDF]

Astronomy & Astrophysics, 2006
12 pages, 4 figures, final version after language editing for Astronomy and Astrophysics; references ...
openaire   +3 more sources

The cosmic evolution of the stellar mass–velocity dispersion relation of early-type galaxies

Monthly Notices of the Royal Astronomical Society, 2020
ABSTRACTWe study the evolution of the observed correlation between central stellar velocity dispersion σe and stellar mass M* of massive ($M_*\gtrsim 3\times 10^{10}\, \mathrm{M_\odot}$) early-type galaxies (ETGs) out to redshift z ≈ 2.5, taking advantage of a Bayesian hierarchical inference formalism.
Carlo Cannarozzo, Alessandro Sonnenfeld, Carlo Nipoti   +2 more
openaire   +5 more sources

Asteroseismic Calibration of the Rossby Number and Its Connection to the Stellar Dynamo and Fundamental Properties

The Astrophysical Journal
The stellar Rossby number, a dimensionless parameter quantifying the influence of Coriolis forces on convective motions, plays a pivotal role in understanding magnetic stellar evolution.
Alfio M. Bonanno, Enrico Corsaro, Travis S. Metcalfe, Sylvain N. Breton, Orlagh L. Creevey, Christopher J. Lindsay   +5 more
doaj   +1 more source

Evolution of the morphology-density and morphology-mass relations of quiescent galaxies at 0.5 < z < 2.5 in the COSMOS-Web survey

Astronomy & Astrophysics
Within the lambda cold dark matter (ΛCDM) cosmological framework, the interplay between galaxy morphology, stellar mass, and environment remains uncertain at z > 1.
Fang Guanwen, Su Yuguo, Lu Shiying, Lin Zesen, Kong Xu   +4 more
doaj   +1 more source

The formation and early dynamical evolution of bound stellar systems

The Astrophysical Journal, 1984
We present the results of numerical N-body calculations which simulate the dynamical evolution of young clusters as they emerge from molecular clouds. We follow the evolution of initially virialized stellar systems of 50 and, in some cases, 100 stars from the point in time immediately after the stars have formed in a cloud until a time long after all ...
C. J. Lada, M. Margulis, D. Dearborn
openaire   +1 more source

Coevolution of Nuclear Star Clusters and Massive Black Holes: Extreme-mass-ratio Inspirals

The Astrophysical Journal
We explore extreme-mass-ratio inspirals (EMRIs) in the coevolution of massive black holes (MBHs) and nuclear star clusters (NSCs), which host diverse stellar populations across a wide range of masses. The dynamics are simulated self-consistently with GNC
Fupeng Zhang, Pau Amaro Seoane
doaj   +1 more source

Revisiting the dynamics of planets in binaries: evolutionary timescales and the effect of early stellar evolution [PDF]

Monthly Notices of the Royal Astronomical Society, 2019
20 pages, 7 figures, Submitted to ...
Bayron Portilla-Revelo, Jorge I Zuluaga
openaire   +2 more sources

Recycled Gas Dominates the Metal-rich Fuel of Supermassive Black Holes

The Astrophysical Journal
Understanding the origin and chemical properties of gas accreted by supermassive black holes (SMBHs) is essential for linking black hole growth to galaxy evolution.
Dongyun Kwak, Ena Choi, Hannah Jhee, Rachel S. Somerville, Thorsten Naab, Michaela Hirschmann, Jaejin Shin, Jong-Hak Woo   +7 more
doaj   +1 more source

The evolution of high-z proto-star clusters into local globular clusters

Astronomy & Astrophysics
The James Webb Space Telescope (JWST) detected numerous massive and relatively compact stellar clumps around proto-galaxies at high redshift (z > 0.5).
Della Croce A., Vesperini E., Pascale R., Askar A., Calura F., Dalessandro E., Giersz M.   +6 more
doaj   +1 more source