Results 91 to 100 of about 605,159 (270)
Dark matter distribution in the Coma cluster from galaxy kinematics: breaking the mass-anisotropy degeneracy [PDF]
, 2003 We study velocity moments of elliptical galaxies in the Coma cluster using Jeans equations. The dark matter distribution in the cluster is modelled by a generalized formula based upon the results of cosmological N-body simulations. Its inner slope (cuspy
E. Lokas, G. Mamon
semanticscholar +1 more source
Mapping the dynamics, star-formation rates, and chemical properties of galaxies with integral field spectroscopy [PDF]
, 2005 Major advances in the development of instruments for eight and ten meter class telescopes are revolutionising our understanding of galaxy formation. In particular, Integral Field Spectrographs (which produce a three dimensional {x, y, velocity) map of a ...
Swinbank, Anthony Mark +1 more
core
Jormungandr: A Large Substructure Circling the Milky Way Identified from Gaia DR3 Data
The Astrophysical JournalWe report the discovery of a large substructure in the Milky Way passing through the solar neighborhood, detected in actions $\left({J}_{\phi },{J}_{{\rm{R}}}\right)$ calculated from Gaia DR3 data.
Xianhao Ye +5 more
doaj +1 more source
Kinematical Fluctuations Vary with Galaxy Surface Mass Density
The Astrophysical Journal Letters, 2023 The Galaxy inner parts are generally considered to be optically symmetric, as well as kinematically symmetric for most massive early-type galaxies. At the lower-mass end, many galaxies contain lots of small patches in their velocity maps, causing their ...
Ze-Hao Zhong +3 more
doaj +1 more source
Annalen der Physik, Volume 538, Issue 3, March 2026.Carrollian Reissner‐Nordström black holes are investigated through fermionic tunneling, entropy‐corrected thermodynamics, and plasma‐modified gravitational lensing. The generalized uncertainty principle introduces minimal‐length corrections to the Hawking temperature, while the combined Barrow‐Exponential entropy reveals smooth thermodynamic crossovers
Erdem Sucu, İzzet Sakallı, Yusuf Sucu
wiley +1 more source
The Planetary Nebula Spectrograph: The Green Light for Galaxy Kinematics [PDF]
, 2002 Planetary nebulae (PNe) are now well established as probes of galaxy dynamics and as standard candles in distance determinations. Motivated by the need to improve the efficiency of planetary nebulae searches and the speed with which their radial ...
N. Douglas +12 more
semanticscholar +1 more source
Phoenix Dwarf Galaxy Stellar Kinematics
, 2011 The Phoenix dwarf galaxy is the nearest and most typical representative of the class of the so-called transition dwarf galaxies (from spheroidal to irregular).
E.V. Held +5 more
core +1 more source
Resolved Stellar and Nebular Kinematics of a Star-forming Galaxy at z ∼ 2
The Astrophysical JournalThe kinematics of star-forming galaxy populations at high redshifts are integral to our understanding of disk properties, merger rates, and other defining characteristics.
Sunny Rhoades +9 more
doaj +1 more source
Similar Signatures of Coplanar Gas Inflow and Disk Warps in Galactic Gas Kinematic Maps
The Astrophysical Journal, 2023 Hydrodynamic simulations suggest that galactic gas disks form when coplanar gas spirals into the inner regions of the disk. We recently presented a simple modified accretion disk model of viscous galactic disks in which star formation is fed by a radial ...
Enci Wang, Simon J. Lilly
doaj +1 more source
Astronomische Nachrichten, Volume 347, Issue 3, March 2026.ABSTRACT Planetary nebulae represent a late evolutionary phase of low‐ to intermediate‐mass stars. In this article, we present the serendipitous discovery of a previously unknown, faint potential Galactic planetary nebula (PN) in the constellation Camelopardalis, identified during a survey‐inspection, aiming at the detection of dwarf companions of the ...
W. E. Celnik +12 more
wiley +1 more source