Results 101 to 110 of about 7,808,989 (241)

Fe Abundances of Early Galaxies at z = 9–12 Derived with Deep JWST Spectra

The Astrophysical Journal
We derive Fe abundance ratios of seven galaxies at z = 9–12 with −22 < M _UV  
Minami Nakane, Masami Ouchi, Kimihiko Nakajima, Yoshiaki Ono, Yuichi Harikane, Yuki Isobe, Ken’ichi Nomoto, Miho N. Ishigaki, Hiroto Yanagisawa, Daichi Kashino, Nozomu Tominaga, Koh Takahashi, Moka Nishigaki, Yui Takeda, Kuria Watanabe   +14 more
doaj   +1 more source

A Solar Analog Model for Decrease in Far Ultraviolet Irradiance Under a Grand Minimum

Earth and Space Science, Volume 13, Issue 9, September 2026.
Abstract Solar analog field stars having a range of magnetic activity can provide an estimate of solar spectral irradiance (SSI) variability relevant to understanding the Sun's influence on terrestrial climate. This approach is particularly useful for far ultraviolet (FUV) irradiance that cannot be observed from the Earth surface.
D. Lubin, C. Melis, D. Tytler
wiley   +1 more source

Bright galaxy number counts [PDF]

, 1995
The value of a plot of galaxy number counts per unit area of sky against magnitude as a probe of the early universe is well known, being influenced by both the curvature of expanding space and the deceleration parameter.
Marr, J.H.
core  

pop-cosmos: A Comprehensive Picture of the Galaxy Population from COSMOS Data

The Astrophysical Journal Supplement Series
We present pop-cosmos : a comprehensive model characterizing the galaxy population, calibrated to 140,938 ( r < 25 selected) galaxies from the Cosmic Evolution Survey (COSMOS) with photometry in 26 bands from the ultraviolet to the infrared. We construct
Justin Alsing, Stephen Thorp, Sinan Deger, Hiranya V. Peiris, Boris Leistedt, Daniel Mortlock, Joel Leja   +6 more
doaj   +1 more source

Impact of Initial Mass Function on the Chemical Evolution of High-redshift Galaxies [PDF]

Boyuan Liu, Michela Mapelli, Volker Bromm, Ralf Stephan Klessen, Lumen Boco, Tilman Hartwig, Simon C. O. Glover, Veronika Lipatova, Guglielmo Costa, Marco Dall’Amico, Giuliano Iorio, Kendall Shepherd, Alessandro Bressan   +12 more
openalex   +2 more sources

Cosmic Ray Anisotropy Generated by the June 22nd 2015 Interplanetary Events

Journal of Geophysical Research: Space Physics, Volume 131, Issue 9, September 2026.
Abstract On 22 June 2015, the near Earth interplanetary space was perturbed by a series of high‐speed streamers and interplanetary coronal mass ejections associated with an active region and two low‐latitude coronal holes. The interaction of these disturbances gave rise to the complex solar wind structure observed at 1 au.
A. Lara, K. P. Arunbabu, T. Niembro
wiley   +1 more source

An analytical model for the chemical evolution of galaxies

, 1979
It is shown that prompt initial enrichment is naturally predicted by models of the chemical evolution of galaxies that account for the early collapse phase of galaxies and for a more general stellar birthrate function.
CAIMMI, ROBERTO
core  

Viral Genome Sequencing Tutorial

, 2018
<p>Datasets required for the Galaxy Training on Viral Genome Sequencing</p ...
Galaxy Training Network (8220705), Galaxy Training Network   +1 more
core   +1 more source

Analysis of the Internal Radial Gradient of Chemical Abundances in Spiral Galaxies from CALIFA

The Astrophysical Journal
The study of chemical evolution is of paramount importance for understanding the evolution of galaxies. Models and observations propose an inside-out mechanism in the formation of spiral galaxy disks, implying a negative radial gradient of elemental ...
A. F. S. Cardoso, O. Cavichia, M. Mollá, L. Sánchez-Menguiano   +3 more
doaj   +1 more source

Investigating Galactic Cosmic Ray Ionization’s Contribution to Aerosol Formation on Neptune and a Potential Link to the Relationship Between Brightness and Solar Activity

Journal of Geophysical Research: Planets, Volume 131, Issue 9, September 2026.
Abstract In this work we investigate how ionization from Galactic Cosmic Rays (GCRs) can affect aerosol nucleation on Neptune and discuss potential implications for the observed brightness variations that appear to follow the solar cycle. We calculate the planetary vertical cutoff rigidity for Neptune based on the O8 ${\mathrm{O}}_{8}$ magnetic field ...
Martin B. B. Enghoff, Paul N. Romani, John E. P. Connerney, John L. Jørgensen   +3 more
wiley   +1 more source