Results 111 to 120 of about 12,590,287 (391)

Is the Gini Coefficient a Stable Measure of Galaxy Structure? [PDF]

open access: yes, 2008
The Gini coefficient, a nonparametric measure of galaxy morphology, has recently taken up an important role in the automated identification of galaxy mergers. I present a critical assessment of its stability, based on a comparison of HST ACS imaging data
T. Lisker
semanticscholar   +1 more source

PKS2250-41: a case study for triggering

open access: yes, 2008
We present the results of a multiwavelength study of the z = 0.31 radio source PKS2250-41. Integral field unit and long-slit spectroscopy obtained using VIMOS and FORS1 on the VLT, and archival HST optical imaging observations are used to study the ...
Appenzeller I.   +18 more
core   +1 more source

Spectroscopic confirmation of a galaxy cluster associated with 7C1756+6520 at z=1.416 [PDF]

open access: yes, 2010
We present spectroscopic follow-up of an overdensity of galaxies photometrically selected to be at 1 ...
A. Galametz   +38 more
core   +2 more sources

Copper Stress Response of Antibiotic‐Resistant and Copper‐Tolerant Enterococcus faecium and the Antibacterial Efficacy of Functionalized Copper Surfaces

open access: yesAdvanced Materials Interfaces, EarlyView.
This study examines how different laser‐patterned copper and brass surfaces, including copper coatings, affect the survival of vancomycin‐resistant Enterococcus faecium. Using microscopy and genome analysis, the results show that copper tolerance varies between strains and can increase after vancomycin exposure.
Franca Arndt   +18 more
wiley   +1 more source

Deep Neutral Hydrogen Observations of the Early-type Galaxy NGC 2768: Collided by a Newly Discovered Satellite Galaxy?

open access: yesThe Astrophysical Journal
We present the results of a deep neutral hydrogen (H i ) observation of the early-type galaxy NGC 2768 using the Five-hundred-meter Aperture Spherical radio Telescope (FAST).
Nai-Ping Yu   +5 more
doaj   +1 more source

The Origin of Star-forming Rings in S0 Galaxies

open access: yesThe Astrophysical Journal, 2023
Spatially resolved integral field spectroscopic maps in a sample of 532 S0 galaxies from the MaNGA survey have unveiled the existence of inner rings (〈 R 〉 ∼ 1 R _e ) betraying ongoing star formation in a number of these objects.
J. L. Tous   +3 more
doaj   +1 more source

On the Relationship between a Giant Radio Galaxy MSH 05-22 and the Ambient Large-Scale Galaxy Structure [PDF]

open access: yes, 2008
We present a comparison of the properties of a giant radio galaxy and the ambient intergalactic medium, whose properties are inferred from the large-scale distribution in galaxies.
R. Subrahmanyan   +3 more
semanticscholar   +1 more source

Chandra Observations of A2670 and A2107: A Comet Galaxy and cDs with Large Peculiar Velocities

open access: yes, 2005
We present an analysis of Chandra observations of the galaxy clusters A2670 and A2107. Their cD galaxies have large peculiar velocities (>200km/s) and thus the clusters appear to be undergoing mergers.
Fujita, Yutaka   +2 more
core   +1 more source

Synergistic Microcrack Engineering and Auxetic Metamaterials for Enhanced Sensitivity in Stretchable Strain Sensors

open access: yesAdvanced Materials Technologies, EarlyView.
A highly sensitive crack‐based piezoresistive strain sensor is developed using a biaxially pre‐stretched multi‐walled carbon nanotubes/Ecoflex composite and integrated with auxetic metamaterials. Biaxial pre‐stretching improves the sensitivity by 56% compared to the uniaxially pre‐stretched strain sensor.
Jaewon Cho   +3 more
wiley   +1 more source

UVCANDELS: The Role of Dust on the Stellar Mass–Size Relation of Disk Galaxies at 0.5 ≤ z ≤ 3.0

open access: yesThe Astrophysical Journal
We use the Ultraviolet Imaging of the Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey fields (UVCANDELS) to measure half-light radii in the rest-frame far-UV for ∼16,000 disk-like galaxies over 0.5 ≤ z ≤ 3. We compare these results to rest-
Kalina V. Nedkova   +32 more
doaj   +1 more source

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