Results 1 to 10 of about 65,614 (266)

Dwarf Galaxies in Voids: Dark Matter Halos and Gas Cooling [PDF]

open access: yesAdvances in Astronomy, 2010
Galaxy surveys have shown that luminous galaxies are mainly distributed in large filaments and galaxy clusters. The remaining large volumes are virtually devoid of luminous galaxies.
Matthias Hoeft, Stefan Gottlöber
doaj   +4 more sources

Tidal Dwarf Galaxies and Missing Baryons [PDF]

open access: yesAdvances in Astronomy, 2010
Tidal dwarf galaxies form during the interaction, collision, or merger of massive spiral galaxies. They can resemble “normal” dwarf galaxies in terms of mass, size, and become dwarf satellites orbiting around their massive progenitor.
Frederic Bournaud
doaj   +4 more sources

Bose-Einstein Condensate Dark Matter Halos Confronted with Galactic Rotation Curves [PDF]

open access: yesAdvances in High Energy Physics, 2017
We present a comparative confrontation of both the Bose-Einstein Condensate (BEC) and the Navarro-Frenk-White (NFW) dark halo models with galactic rotation curves.
M. Dwornik   +3 more
doaj   +4 more sources

The nature of red dwarf galaxies [PDF]

open access: yesThe Astrophysical Journal, 2009
Using dark matter halos traced by galaxy groups selected from the Sloan Digital Sky Survey Data Release 4, we find that about 1/4 of the faint galaxies ($\rmag >-17.05$, hereafter dwarfs) that are the central galaxies in their own halo are not blue and ...
Adelman-McCarthy   +27 more
core   +8 more sources

Identification and Characterization of a Large Sample of Distant Active Dwarf Galaxies in XMM-SERVS

open access: yesThe Astrophysical Journal, 2023
Active dwarf galaxies are important because they contribute to the evolution of dwarf galaxies and can reveal their hosted massive black holes. However, the sample size of such sources beyond the local universe is still highly limited.
Fan Zou   +12 more
doaj   +1 more source

The Mass–Metallicity Relation of Dwarf Galaxies at Cosmic Noon from JWST Observations

open access: yesThe Astrophysical Journal Letters, 2023
We present a study of the mass–metallicity relation (MZR) of 51 dwarf galaxies ( M _⋆ ≈ 10 ^6.5 –10 ^9.5 M _⊙ ) at z = 2–3 from the A2744 and SMACS J0723-3732 galaxy cluster fields.
Mingyu Li   +15 more
doaj   +1 more source

Dwarfs from the Dark (Energy Survey): a machine learning approach to classify dwarf galaxies from multi-band images

open access: yesThe Open Journal of Astrophysics, 2021
Countless low-surface brightness objects - including spiral galaxies, dwarf galaxies, and noise patterns - have been detected in recent large surveys.
Oliver Müller, Eva Schnider
doaj   +1 more source

A Comparison between the Morphologies and Structures of Dwarf Galaxies with and without Active Massive Black Holes

open access: yesThe Astrophysical Journal, 2023
We study the morphologies and structures of 57 dwarf galaxies that are representative of the general population of dwarf galaxies and compare their demographics to a sample of dwarf galaxies hosting optically selected active galactic nuclei (AGNs).
Seth J. Kimbrell   +3 more
doaj   +1 more source

The Relationship between Slope and Luminosity [PDF]

open access: yesKirkuk Journal of Science, 2010
In this study, a sample of galaxies has been adopted. It consists of 112 elliptical galaxies, among them were 56 dwarf elliptical galaxies, which belong to virgo cluster, 37 normal galaxies and 19 bright galaxies. Also, surface brightness profiles fitted
Mohsen H. Ali AL-Khafajy
doaj   +1 more source

Two Candidates for Dual AGN in Dwarf-dwarf Galaxy Mergers

open access: yesThe Astrophysical Journal, 2023
Dual active galactic nuclei (DAGN) are important for understanding galaxy-merger-triggered fueling of black holes and the hierarchical growth of structures.
Marko Mićić   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy