Results 91 to 100 of about 142,796 (289)

Properties of intra-group stars and galaxies in galaxy groups: ‘normal’ versus ‘fossil’ groups [PDF]

Monthly Notices of the Royal Astronomical Society, 2006
Cosmological LCDM simulations of 12 M_vir~10^14 Msun galaxy groups have been performed, invoking star formation, chemical evolution with non-instantaneous recycling, metallicity dependent radiative cooling, strong star-burst driven galactic super-winds and effects of a meta-galactic UV field. At z=0, intra-group light (IGL) fractions are found to be 12-
openaire   +4 more sources

Introducing the Condor Array Telescope. VI. Discovery of Extensive Ionized Gaseous Filaments of the Cosmic Web in the Direction of the M81 Group

The Astrophysical Journal
We used the Condor Array Telescope to obtain deep imaging observations through luminance broadband and He ii , [O iii ], He i , H α , [N ii ], and [S ii ] narrowband filters of an extended region of the M81 Group spanning ≈8 × 8 deg ^2 on the sky ...
Kenneth M. Lanzetta, Stefan Gromoll, Michael M. Shara, David Valls-Gabaud, Frederick M. Walter, John K. Webb   +5 more
doaj   +1 more source

Metallicity structure in X-ray bright galaxy groups

, 2006
Using Chandra X-ray data of a sample of 15 X-ray bright galaxy groups, we present preliminary results of a coherent study of the radial distribution of metal abundances in the hot gas in groups.
A. Finoguenov, A. Finoguenov, J.P.F. Osmond, K. Nomoto, K. Nomoto, N. Grevesse, T.J. Ponman   +6 more
core   +1 more source

High‐Coercivity Nd2Fe14B/α‐Fe Nanocomposites With Ultrafine Nanocrystalline Structure via Zr‐Induced Synchronous Precipitation

Rare Metals, EarlyView.
ABSTRACT Nanocomposite permanent magnets with reduced rare‐earth content represent a promising class of materials for next‐generation high‐performance applications. However, asynchronous precipitation of soft and hard magnetic phases often results in grain size mismatch and limited coercivity.
Xiaowei Zhang, Jun Li, Chang Liu, Renquan Wang, Hongfu Liu, Xiaotao Bao, Ying Liu   +6 more
wiley   +1 more source

Innovation for Sustainable Development: Assessing Sustainability‐Oriented Innovations in the UK Palm Oil Supply Chains

Sustainable Development, EarlyView.
ABSTRACT This research evaluates the adoption of Sustainability‐Oriented Innovations (SOIs) by UK food manufacturers, particularly in the palm oil sector. Despite the global palm oil industry's environmental and social impacts, such as deforestation and labour exploitation, empirical studies on SOIs are limited. This paper addressed this gap by mapping
Charlie Terry, Rory Padfield, Alexandra Dales   +2 more
wiley   +1 more source

A Deep Dive into the NGC 741 Galaxy Group: Insights into a Spectacular Head-tail Radio Galaxy from VLA, MeerKAT, uGMRT, and LOFAR

The Astrophysical Journal
We present deep, wideband multifrequency radio observations (144 MHz−8 GHz) of the remarkable galaxy group NGC 741, which yield crucial insights into the interaction between the infalling head-tail radio galaxy (NGC 742) and the main group.
K. Rajpurohit, E. O’Sullivan, G. Schellenberger, M. Brienza, J. M. Vrtilek, W. Forman, L. P. David, T. Clarke, A. Botteon, F. Vazza, S. Giacintucci, C. Jones, M. Brüggen, T. W. Shimwell, A. Drabent, F. Loi, S. I. Loubser, K. Kolokythas, I. Babyk, H. J. A. Röttgering   +19 more
doaj   +1 more source

Subclustering among Local Group Galaxies [PDF]

The Astronomical Journal, 1999
To be published in the May 1999 issue of the Astronomical ...
openaire   +2 more sources

Improving Cycle Life and Capacity Retention in PVMPO‖Li Dual‐Ion Lithium‐Organic Batteries Using an EC‐Free and FEC Additive Containing Electrolyte

Small Methods, EarlyView.
The major bottleneck of PVMPO‐based positive electrodes is electrode degradation during extended cycling with EC‐containing electrolytes. This issue is mitigated by using EC‐free electrolytes with FEC additives, which exhibit reduced interfacial resistance, fewer surface cracks, improved capacity retention, and suppressed electrode degradation, thereby
Sathiya Priya Panjalingam, Somayeh Ahadi, Jakob Michael Hesper, Uta Rodehorst, Sascha Nowak, Birgit Esser, Martin Winter, Peter Bieker   +7 more
wiley   +1 more source

The cosmological constant derived via galaxy groups and clusters

European Physical Journal C: Particles and Fields, 2019
The common nature of dark matter and dark energy is argued in Gurzadyan (Eur Phys J Plus 134:14, 2019) based on the approach that the cosmological constant $$\varLambda $$ Λ enters the weak-field General Relativity following from Newton theorem on the ...
V. G. Gurzadyan, A. Stepanian
doaj   +1 more source

Saving Bambi from the mower? Using a drone with thermal camera to evaluate a low‐tech scaring technique to reduce roe deer fawn mortality during grass harvest

Wildlife Biology, EarlyView.
Roe deer is a species that hides their neonates as an anti‐predator strategy. This may prove efficient against mammalian predators, such as the red fox; however, it might be an ecological trap as large numbers of fawns are killed by tractors with harvesters each year during grass harvest.
Thomas Vogler, Neri H Thorsen, Simen Pedersen   +2 more
wiley   +1 more source