Results 101 to 110 of about 28,808 (222)

The Rise of Ionized Gas Filaments in Early-Type Galaxies

open access: yesThe Open Journal of Astrophysics
Multiphase filamentary nebulae are ubiquitous in the brightest cluster galaxies (BCGs) of cool-core clusters, providing key insights into the cycle of baryons and the feeding and feedback of supermassive black holes. However, BCGs account for less than 1%
Ryan Eskenasy   +2 more
doaj   +1 more source

Extended Lyman alpha emission around bright quasars

open access: yes, 2006
Quasars trace the most massive structures at high redshifts and their presence may influence the evolution of the massive host galaxies. We study the extended Lyman alpha emission line regions (EELRs) around seven bright, mostly radio-quiet quasars (QSOs)
Antonucci   +53 more
core   +3 more sources

Shape: A 3D Modeling Tool for Astrophysics

open access: yes, 2010
We present a flexible interactive 3D morpho-kinematical modeling application for astrophysics. Compared to other systems, our application reduces the restrictions on the physical assumptions, data type and amount that is required for a reconstruction of ...
Koning, Nicholas   +4 more
core   +2 more sources

Weak magnetic fields in central stars of planetary nebulae?

open access: yes, 2014
It is not yet clear whether magnetic fields play an essential role in shaping planetary nebulae (PNe), or whether stellar rotation alone and/or a close binary companion can account for the variety of the observed nebular morphologies.
Hamann, W. -R.   +6 more
core   +1 more source

A Catalog of Diffuse X-ray-Emitting Features within 20 pc of Sgr A*: Twenty Pulsar Wind Nebulae?

open access: yes, 2007
We present a catalog of 34 diffuse features identified in X-ray images of the Galactic center taken with the Chandra X-ray Observatory. Several of the features have been discussed in the literature previously, including 7 that are associated with a ...
Becker W.   +9 more
core   +1 more source

Star Formation, Nebulae, and Active Galactic Nuclei in CLASH Brightest Cluster Galaxies. I. Dependence on Core Entropy of Intracluster Medium

open access: yesThe Astrophysical Journal
We set the stage for reassessing how star formation, emission-line nebulae, and active galactic nuclei (AGNs) in brightest cluster galaxies (BCGs) depend on the thermodynamics of the intracluster medium (ICM).
Arsen Levitskiy   +4 more
doaj   +1 more source

Oxyster: A Circumgalactic Low-ionization Oxygen Nebula next to a Starburst Galaxy at z ∼ 1

open access: yesThe Astrophysical Journal
Extended emission line nebulae around galaxies or active galactic nuclei (AGNs) provide a unique window to investigate the galactic ecosystem through the circumgalactic medium (CGM).
Pengjun Lu   +5 more
doaj   +1 more source

Discovery of spectacular quasar-driven superbubbles in red quasars. [PDF]

open access: yesSci Adv, 2023
Shen L   +9 more
europepmc   +1 more source

The Green Chile Project. I. A New Catalog of Low-redshift Extended Emission-line Nebulae

open access: yesThe Astronomical Journal
Extended emission-line nebulae (EELN) around galaxies allow us to study their host galaxies and their surrounding environments. EELN can provide insights into the physical properties of the extended gas and, when powered by active galactic nuclei (AGN ...
Audrey F. Dijeau   +2 more
doaj   +1 more source

Gamma-ray emission from star-forming complexes observed by MAGIC: The cases of W51 and HESS J1857+026

open access: yesEPJ Web of Conferences, 2015
Massive star-forming regions assemble a large number of young stars with remnants of stellar evolution and a very dense environment. Therefore, particles accelerated in supernova remnants and pulsar wind nebulae encounter optimal conditions for ...
Reichardt I.   +5 more
doaj   +1 more source

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