Results 121 to 130 of about 67,210 (214)

Radio Jet Feedback on the Inner Disk of Virgo Spiral Galaxy Messier 58

open access: yesThe Astrophysical Journal
Spitzer spectral maps reveal a disk of highly luminous, warm (>150 K) H _2 in the center of the massive spiral galaxy Messier 58, which hosts a radio-loud active galactic nucleus (AGN). The inner 2.6 kpc of the galaxy appears to be overrun by shocks from
Patrick M. Ogle   +11 more
doaj   +1 more source

Investigating the Complex Ring Morphology in UGC 10168: A Photometric and Structural Analysis of a (R1R2′)SABa(r′l)a Galaxy

open access: yesIraqi Journal of Physics
This study provides a comprehensive photometric and structural analysis of the galaxy UGC 10168, which is classified as (R₁R₂′)SABa(r′l)a in the Comprehensive de Vaucouleurs Revised Hubble-Sandage (CVRHS) system.
Zeinab F. Hussein, Abdullah K. Ahmed
doaj   +1 more source

Spiral galaxies

open access: yes, 1995
This thesis deals with surface photometry of face-on spiral galaxies in a statistical way, using both single passband as well as color information of a large sample of galaxies. In this chapter I first discuss galaxy formation and evolution models and the role that photometry plays in testing these models.
openaire   +1 more source

Can the Dynamo of Spiral-arm Galaxies Be Explained by Anisotropic Conductivity?

open access: yesThe Astrophysical Journal
The possibility of generating a magnetic field by a dynamo effect with anisotropic electrical conductivity rather than turbulent flow has been demonstrated theoretically and experimentally.
Paul Gomez   +2 more
doaj   +1 more source

The halo magnetic field of a spiral galaxy at z = 0.414

open access: yesAstronomy & Astrophysics
Aims. Even though magnetic fields play an important role in galaxy evolution, the redshift evolution of galactic-scale magnetic fields is not well constrained observationally.
Kovacs Timea Orsolya   +4 more
doaj   +1 more source

The Redshift of GRB 190829A/SN 2019oyw: A Case Study of GRB-SN Evolution

open access: yesThe Astrophysical Journal
The nearby long gamma-ray burst (GRB) 190829A was observed using the Hubble Space Telescope/Wide Field Camera 3/infrared grisms about four weeks to 500 days after the burst.
Kornpob Bhirombhakdi   +9 more
doaj   +1 more source

The nuclear star cluster of M 74: A fossil record of the very early stages of a star-forming galaxy

open access: yesAstronomy & Astrophysics
Nuclear star clusters (NSC) are dense and compact stellar systems with sizes of a few parsecs located at galactic centers. Their properties and formation mechanisms seem to be tightly linked to the evolution of the host galaxy, with potentially different
Pinna Francesca   +15 more
doaj   +1 more source

Dissecting Bar-induced Stellar Kinematics in Disk Galaxies: The Bisymmetric Model and Rotation Curve Modifications

open access: yesThe Astrophysical Journal
We analyze bars formed in N -body simulations to investigate two key aspects of stellar kinematic structure of barred galaxies: the angular distributions of the radial and azimuthal components of stellar velocities, and the impact of bars on rotation ...
Seungwon Baek   +3 more
doaj   +1 more source

Polarized thermal emission from dust in a galaxy at redshift 2.6. [PDF]

open access: yesNature, 2023
Geach JE   +7 more
europepmc   +1 more source

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