Results 111 to 120 of about 394,003 (311)

X-Ray and Ultraviolet Properties of AGNs in Nearby Dwarf Galaxies [PDF]

open access: yes, 2016
We present new Chandra X-ray Observatory and Hubble Space Telescope observations of eight optically selected broad-line active galactic nucleus (AGN) candidates in nearby dwarf galaxies (z < 0.055).
V. Baldassare   +3 more
semanticscholar   +1 more source

Maximum Mass Limit of Generalized MIT Compact Star: A Theoretical Study of Thin Shell Dynamics and Gravitational Lensing

open access: yesFortschritte der Physik, Volume 73, Issue 8, August 2025.
Abstract In this study, the properties, equilibrium, and stability of compact objects within the framework of teleparallel gravity with the generalized MIT bag model are investigated. By incorporating the modified field equations, the influence of the generalized bag constant on the structure and physical characteristics of quark stars and neutron ...
Sayantan Ghosh   +2 more
wiley   +1 more source

Ultra-compact dwarf galaxy formation by tidal stripping of nucleated dwarf galaxies [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2013
Ultra Compact Dwarf Galaxies (UCDs) and dwarf galaxy nuclei have many common properties, such as internal velocity dispersions and colour-magnitude trends, suggesting tidally stripped dwarf galaxies as a possible UCD origin. However, UCDs typically have sizes more than twice as large as nuclei at the same luminosity. We use a GPU-enabled version of the
Pfeffer, J., Baumgardt, H.
openaire   +3 more sources

The Pristine dwarf galaxy survey – IV. Probing the outskirts of the dwarf galaxy Boötes I

open access: yesMonthly Notices of the Royal Astronomical Society, 2022
ABSTRACT We present a new spectroscopic study of the dwarf galaxy Boötes I (Boo I) with data from the Anglo-Australian Telescope and its AAOmega spectrograph together with the Two Degree Field multi-object system. We observed 36 high-probability Boo I stars selected using Gaia Early Data Release 3 proper motions and photometric ...
Nicolas Longeard   +14 more
openaire   +5 more sources

Searches for ultracompact dwarf galaxies in galaxy groups [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2007
8 pages, 2 figures, accepted for publication in ...
Evstigneeva, E. A.   +6 more
openaire   +3 more sources

X-Ray Bright Active Galactic Nuclei in Local Dwarf Galaxies: Insights from eROSITA

open access: yesThe Astrophysical Journal
Although supermassive black holes (SMBHs) reside in the heart of virtually every massive galaxy, it remains debated whether dwarf galaxies commonly host SMBHs. Because low-mass galaxies may retain memory of the assembly history of their black holes (BHs),
Andrea Sacchi   +3 more
doaj   +1 more source

BAF60/SWP73 subunits define subclasses of SWI/SNF chromatin remodelling complexes in Arabidopsis

open access: yesNew Phytologist, Volume 247, Issue 2, Page 791-812, July 2025.
Summary Evolutionarily conserved switch‐defective/sucrose nonfermentable (SWI/SNF) ATP‐dependent chromatin remodelling complexes (CRCs) alter nucleosome positioning and chromatin states, affecting gene expression to regulate important processes such as proper development and hormonal signalling pathways.
Sebastian P. Sacharowski   +23 more
wiley   +1 more source

Formation of Molecular Gas in the debris of violent Galaxy Interactions [PDF]

open access: yes, 2000
In many gravitational interactions between galaxies, gas and stars that have been torn from either or both of the precursor galaxies can collect in 'tidal tails'.
Braine, Jonathan   +3 more
core   +3 more sources

Hunting Faint Dwarf Galaxies in the Field Using Integrated Light Surveys [PDF]

open access: yes, 2017
We discuss the approach of searching the lowest mass dwarf galaxies, , in the general field, using integrated light surveys. By exploring the limiting surface brightness-spatial resolution (μeff,lim−θ) parameter space, we suggest that faint field dwarfs ...
S. Danieli, P. V. van Dokkum, C. Conroy
semanticscholar   +1 more source

The Local Volume Database: a library of the observed properties of nearby dwarf galaxies and star clusters

open access: yesThe Open Journal of Astrophysics
I present the Local Volume Database (LVDB), a catalog of the observed properties of dwarf galaxies and star clusters in the Local Group and Local Volume.
Andrew B Pace
doaj   +1 more source

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