Results 141 to 150 of about 2,162,294 (370)
Tidal Formation of Dark Matter Deficit Diffuse Galaxy NGC 1052-DF2 by SIDM
The Astrophysical JournalObservations have revealed a significant dark matter deficit in the ultradiffuse galaxy NGC 1052-DF2 (DF2). It is widely accepted that the formation of this unique galaxy can be attributed to the tidal stripping of its host galaxy, NGC 1052.
Zhao-Chen Zhang +2 more
doaj +1 more source
Heat Transfer, EarlyView.ABSTRACT This review explores the impact of gravitational instability on convective heat transfer, integrating existing research results and theoretical models. Gravitational instability is vital in promoting or hindering convective actions in different systems, such as atmospheric events, ocean currents, and industrial processes.
Hossam A. Nabwey +3 more
wiley +1 more source
A Multiwavelength Portrait of the 3C 220.3 Lensed System
The Astrophysical JournalThe 3C 220.3 system is a rare case of a foreground narrow-line radio galaxy (“galaxy A,” z _A = 0.6850) lensing a background submillimeter galaxy ( z _SMG = 2.221).
Sóley Ó. Hyman +12 more
doaj +1 more source
Galaxies, 2018 The cold dark matter (CDM) paradigm successfully explains the cosmic structure over an enormous span of redshifts. However, it fails when probing the innermost regions of dark matter halos and the properties of the Milky Way’s dwarf galaxy satellites ...
Ivan de Martino +5 more
doaj +1 more source
, 2007 We perform a statistical analysis of AGN host characteristics and nuclear activity for AGNs in pairs and without companions. Our study concerns a sample of AGNs derived from the SDSS-DR4 data by Kauffmann et al (2003) and pair galaxies obtained from the same data set by Alonso et al. (2006).
Alonso, M. Sol +3 more
openaire +2 more sources
People and Nature, EarlyView.Abstract In Central Africa, human activities are severely impacting terrestrial and aquatic wildlife, threatening the food security of millions of people. Accordingly, sustainable use of wildlife is crucial for the nutrition and livelihoods of many rural communities in the region.
Zolo Admettons +9 more
wiley +1 more source
A Multiwavelength Approach to Constraining the Merger Properties of ACT-CL J0034.4+0225
The Astrophysical JournalACT-CL J0034.4+0225 is a previously unrecognized merging galaxy cluster at z = 0.38588 ± 0.00068. Our primary evidence is provided by a 21 ks Chandra image that shows two surface brightness peaks separated by ∼49″ (259 kpc) surrounded by an extended ...
Peter Doze +12 more
doaj +1 more source
Interacting Galaxies with MOND
, 2007 We compare N-body simulations performed in MOND with analogs in Newtonian gravity with dark matter (DM). We have developed a code which solves the Poisson equation in both gravity models. It is a grid solver using adaptive mesh refinement techniques, allowing us to study isolated galaxies as well as interacting galaxies.
Tiret, O., Combes, F.
openaire +2 more sources
Interacting galaxies in the NGC 697 group of galaxies [PDF]
Proceedings of the International Astronomical Union, 2016 AbstractWe studied the morphology of two brightest members of the nearby NGC 697 group of galaxies, and found evidence of satellite accretion onto the primary galaxy NGC 697 of the group as well as outer and inner irregularities of the only early-type galaxy NGC 680 of the group, which are probably shaped by recent dry merging event(s).
openaire +1 more source
High‐Contrast Colorless‐to‐Colored Thermochromic Materials
Small, EarlyView.We developed new three‐component thermochromic systems showing reversible colorless‐to‐colored transition. Our general empirical rule applies to diverse fatty acid phase change materials and leuco dyes, enabling easily tunable transition temperature and activated colors (blue, cyan, green, pink, grey). Solid particles of these materials were integrated
Diptiman Dinda +4 more
wiley +1 more source