High-Resolution Observations of the Elliptical Galaxy NGC 4636 with the Reflection Grating Spectrometer on Board XMM-Newton [PDF]
, 2001 We present the first high spectral resolution X-ray observation of the giant elliptical galaxy NGC 4636, obtained with the reflection grating spectrometer on board the XMM-Newton Observatory.
H. Xu +8 more
semanticscholar +1 more source
Chandra Observations of Gas Stripping in the Elliptical Galaxy NGC 4552 in the Virgo Cluster [PDF]
, 2005 We use a 54.4 ks Chandra observation to study ram pressure stripping in NGC 4552 (M89), an elliptical galaxy in the Virgo Cluster. Chandra images in the 0.5-2 keV band show a sharp leading edge in the surface brightness 3.1 kpc north of the galaxy center,
M. Machacek +4 more
semanticscholar +1 more source
Genomic Insights into Post‐Domestication Expansion and Selection of Body Size in Ponies
Advanced Science, EarlyView.The authors’ research delves into the history of ponies by assembling a pony genome and integrating horse genomes. This unveils genetic connections between Asian and European pony breeds. Cis‐regulatory elements of key genes impacting body size are also identified.
Xingzheng Li +23 more
wiley +1 more source
On the Dichotomy between Normal and Dwarf Ellipticals [PDF]
, 2016 Using images from the SDSS DR13 library, we examine the structural properties of 374 bright (classed E0 to E6) and dwarf ellipticals (classed dE(nN) to dE(N)). The sample combines a multicolor sample of bright ellipticals (252 galaxies with $M_g < -20$) with a new sample of faint ellipticals (60 galaxies with $M_g > -20$) which overlaps the dwarf ...
arxiv +1 more source
Chandra Evidence of a Flattened, Triaxial Dark Matter Halo in the Elliptical Galaxy NGC 720 [PDF]
, 2002 We present an analysis of a Chandra ACIS-S observation of the elliptical galaxy NGC 720, to verify the existence of a dark matter halo and to measure its ellipticity.
D. Buote +3 more
semanticscholar +1 more source
The orientation of galaxy pairs with filamentary structures: dependence on morphology
, 2018 Aims. With the aim of performing an analysis of the orientations of galaxy pair systems with respect to the underlying large-scale structure, we study the alignment between the axis connecting the pair galaxies and the host cosmic filament where the pair
Alonso, Sol +5 more
core +1 more source
Line-of-sight velocity distributions of elliptical galaxies from collisionless mergers [PDF]
, 2006 We analyse the skewness of the line-of-sight velocity distributions in model elliptical galaxies built through collisionless galaxy mergers. We build the models using large N-body simulations of mergers between either two spiral or two elliptical ...
Balcells, M. +2 more
core +2 more sources
A relation between the dark mass of elliptical galaxies and their shape [PDF]
MNRAS (2014), 2013 We have studied a large number of elliptical galaxies and found a correlation between their dark matter content and the ellipticity of their visible shape. The galaxies were strictly selected so that only typical medium-size elliptical galaxies were considered.
arxiv +1 more source
Detection, Photometry, and Slitless Radial Velocities of 535 Planetary Nebulae in the Flattened Elliptical Galaxy NGC 4697 [PDF]
, 2001 We have detected 535 planetary nebulae (PNs) in the flattened elliptical galaxy NGC 4697 using the classic on-band, off-band filter technique with the Focal Reducer and Spectrograph at the Cassegrain focus of the first 8 m telescope unit of the ESO Very ...
Roberto H. Méndez +7 more
semanticscholar +1 more source
A review of multiscale numerical modeling of rock mechanics and rock engineering
Deep Underground Science and Engineering, EarlyView.Multiscale numerical methods of rock mechanics and rock engineering are reviewed, and the review results show that more attention should be paid to the development of an advanced constitutive model in addition to numerical techniques themselves. Abstract Rock is geometrically and mechanically multiscale in nature, and the traditional phenomenological ...
Xindong Wei, Zhe Li, Gaofeng Zhao
wiley +1 more source