Results 41 to 50 of about 228,068 (290)

Malin 1: interacting galaxy pair?

open access: yes, 2010
Malin 1 is a unique, extraordinarily large low surface brightness galaxy. The structure and the origins of the galaxy are poorly understood. The reason for such a situation is an absence of detailed observational data, especially, of high-resolution ...
A. V. Moiseev   +24 more
core   +1 more source

NGC1277: a massive compact relic galaxy in the nearby Universe [PDF]

open access: yes, 2013
As early as 10 Gyr ago, galaxies with more than 10^11 Msun in stars already existed. While most of these massive galaxies must have subsequently transformed through on-going star formation and mergers with other galaxies, a small fraction (10^11 Msun ...
Balcells, Marc   +4 more
core   +2 more sources

Dynamic Chiral Plasmonic Systems‐Based on Spiropyran Derivatives and Gold Nanorods

open access: yesAdvanced Materials Interfaces, EarlyView.
Soft chiral plasmonic nanocomposites are prepared by embedding gold nanorods into spiropyran‐based supramolecular gels. The system self‐assembles into helical structures, enabling plasmonic circular dichroism. When illuminated with UV light spiropyran–merocyanine isomerization occurs, inducing reversible nanoscale reorganization and modulation of the ...
Ewelina Tomczyk   +4 more
wiley   +1 more source

Calibrating Nonparametric Morphological Indicators from JWST Images for Galaxies over 0.5 < z < 3

open access: yesThe Astrophysical Journal
The measurements of morphological indicators of galaxies are often influenced by a series of observational effects. In this study, we utilize a sample of 832 TNG50 simulated galaxies with log( M _* / M _⊙ )> 9 at 0.5 < z < 3 to investigate the ...
Jian Ren   +8 more
doaj   +1 more source

A Proof‐of‐Concept Assessment of a Novel Wearable Eyelid Muscle Device: A Pre‐Clinical Animal Cadaver Study for Eyelid Closure Restoration

open access: yesAdvanced Robotics Research, EarlyView.
This article introduces a soft wearable eyelid sling device incorporating a hydraulic soft artificial muscle (SAM) for achieving complete closure of an eyelid. The SAM is driven by a cam mechanism that provides a displacement profile closely matched with those of a healthy eyelid.
Patrick Pruscino   +7 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 Effect of Environment on the Properties of the Most Massive Galaxies at 0.5 < z < 2.5 in the COSMOS-DASH Field

open access: yesThe Astrophysical Journal, 2023
How the environment influences the most massive galaxies is still unclear. To explore the effects of the environment on morphology and star formation in the most massive galaxies at high redshift, we select galaxies with stellar mass $\mathrm{log}({M}_ ...
Jie Song   +4 more
doaj   +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

NNMT Orchestrates Metabolic‐Epigenetic Reprogramming to Drive Macrophage‐Myofibroblast Transition in Hypertrophic Scarring

open access: yesAdvanced Science, EarlyView.
In macrophage‐myofibroblast transition, upregulated NNMT depletes S‐Adenosylmethionine‌ (SAM) and nicotinamide adenine dinucleotide(NAD+), thereby triggering epigenetic reprogramming via Histone H3 Lysine 27 acetylation (H3K27ac) accumulation at the promoter region of master transcription factor Prrx1.
Xiwen Dong   +11 more
wiley   +1 more source

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