Results 71 to 80 of about 48,249 (220)
Warped polar ring in the Arp 212 galaxy
, 2008 The Fabry-Perot scanning interferometer mounted on the 6-m telescope of the Special Astrophysical Observatory of the Russian Academy of Sciences is used to study the distribution and kinematics of ionized gas in the peculiar galaxy Arp 212 (NGC 7625, III
Fabrika, S. N. +4 more
core +2 more sources
A Model Framework for Scaling Pre‐Quaternary Cosmogenic Nuclide Production Rates
Geochemistry, Geophysics, Geosystems, Volume 26, Issue 1, January 2025.Abstract Cosmogenic nuclide dating is an essential component of studying Earth surface processes, but it requires knowledge of how nuclide production rates vary in time and space. Typically, production rates are calibrated at sites with independently well‐constrained exposure histories and then scaled to other sites of interest using scaling frameworks
M. Mijjum +5 more
wiley +1 more source
Damped Lyman alpha systems and galaxy formation models - II. High ions and Lyman limit systems
, 2002 We investigate a model for the high-ionization state gas associated with observed damped Lyman-alpha systems, based on a semi-analytic model of galaxy formation set within the paradigm of hierarchical structure formation.
Maller, Ariyeh H. +3 more
core +1 more source
Riemann Solitons on Homogeneous Siklos Spacetimes
Journal of Mathematics, Volume 2025, Issue 1, 2025.In this paper, we investigate the properties of Riemann solitons on homogeneous Siklos spacetimes. Siklos spacetimes, which are special solutions to Einstein’s equations with a wave‐like potential, provide a suitable setting for studying the geometric properties of Riemann solitons.
Mehdi Jafari +3 more
wiley +1 more source
The Intrinsic Flattening of Galaxy Disks
The Astrophysical JournalHighly inclined (edge-on) disk galaxies offer the unique perspective to constrain their intrinsic flattening, c / a , where c and a are, respectively, the vertical and long radial axes of the disk measured at suitable stellar densities.
Jeremy Favaro +3 more
doaj +1 more source
The effect of vorticity on the feeding of a freshwater grazer
Limnology and Oceanography, Volume 69, Issue S1, Page S54-S66, December 2024.Abstract The transfer of energy through zooplankton grazing on phytoplankton is one of the most important interactions in aquatic ecosystems, yet the role of hydrodynamic forces is not fully understood. Factors that influence these interactions include algal size and shape and the interactions between grazer and alga dictated by hydrodynamic forces ...
Luc Goulet +2 more
wiley +1 more source
Visit Nearby Halo Substructures Using LAMOST DR9 MRS Data
The Astrophysical JournalBased on the LAMOST DR9 Medium Resolution Spectra (MRS) catalog, combined with astrometries from Gaia DR3, we conducted an investigation into the substructures in the stellar halo to obtain their chemical and kinematic information.
Xin-Zhe Tang +5 more
doaj +1 more source
High-resolution Optical IFU Spectroscopy of the Complex Galaxy Merger II Zw 096
The Astrophysical JournalLuminous and ultraluminous IR galaxies are critical for investigating feedback mechanisms due to a combination of intense star formation episodes and active galactic nuclei (AGN), particularly in the context of complex galaxy interactions.
Clemente Riesco +22 more
doaj +1 more source
Determining the parameters of the spiral arms of the Galaxy from kinematic tracers based on Gaia DR3 data [PDF]
, 2023 S. I. Denyshchenko +4 more
openalex +1 more source
A Stellar Dynamical Mass for the Central Black Hole in MCG–06-30-15
The Astrophysical JournalWe present the stellar dynamical (SD) mass of the central black hole in the nearby Seyfert galaxy MCG–06-30-15 using the Schwarzschild orbit-superposition method implemented in the open-source code FORSTAND .
Nabanita Das +6 more
doaj +1 more source