Results 31 to 40 of about 142,027 (204)

The Structures of Distant Galaxies - IV: A New Empirical Measurement of the Time-Scale for Galaxy Mergers - Implications for the Merger History [PDF]

open access: yes, 2009
Understanding the role of mergers in galaxy formation is one of the most outstanding problems in extragalactic astronomy. While we now have an idea for how the merger fraction evolves at redshifts z < 3, converting this merger fraction into merger rates, and therefore how many mergers an average galaxy undergoes during its history, is still uncertain ...
arxiv   +1 more source

Signatures of Massive Black Hole Merger Host Galaxies from Cosmological Simulations I: Unique Galaxy Morphologies in Imaging [PDF]

open access: yesarXiv, 2023
Low-frequency gravitational wave experiments such as the Laser Interferometer Space Antenna and pulsar timing arrays are expected to detect individual massive black hole (MBH) binaries and mergers. However, secure methods of identifying the exact host galaxy of each MBH merger amongst the large number of galaxies in the gravitational wave localization ...
arxiv  

Night‐Time Curfew, Day‐Time Masks

open access: yesAnthropology and Humanism, Volume 47, Issue 2, Page 409-415, December 2022., 2022
SUMMARY In this narrative, I offer a lightly fictionalized version of my experience returning to Kenya from the United States to conduct fieldwork from late 2020 through mid‐2021, a period when the COVID‐19 pandemic was ravaging globally. My narrative reveals how local people draw on their knowledge of the corrupt police system to resist COVID‐19 ...
Jacob Muniko Mwita
wiley   +1 more source

Addressing persistent challenges in digital image analysis of cancer tissue: resources developed from a hackathon

open access: yesMolecular Oncology, EarlyView.
Large multidimensional digital images of cancer tissue are becoming prolific, but many challenges exist to automatically extract relevant information from them using computational tools. We describe publicly available resources that have been developed jointly by expert and non‐expert computational biologists working together during a virtual hackathon
Sandhya Prabhakaran   +16 more
wiley   +1 more source

On the lifetime of merger features of equal-mass disk mergers [PDF]

open access: yes, 2014
Detecting post-merger features of merger remnants is highly dependent on the depth of observation images. However, it has been poorly discussed how long the post-merger features are visible under different observational conditions. We investigate a merger-feature time useful for understanding the morphological transformation of galaxy mergers via ...
arxiv   +1 more source

The CFHTLS Deep Catalog of Interacting Galaxies I. Merger Rate Evolution to z=1.2 [PDF]

open access: yesAstrophysical Journal 709 (2010) 1067-1082, 2010
We present the rest-frame optical galaxy merger fraction between 0.2
arxiv   +1 more source

Chiral Engineered Biomaterials: New Frontiers in Cellular Fate Regulation for Regenerative Medicine

open access: yesAdvanced Functional Materials, EarlyView.
Chiral engineered biomaterials can selectively influence cell behaviors in regenerative medicine. This review covers chiral engineered biomaterials in terms of their fabrication methods, cellular response mechanisms, and applications in directing stem cell differentiation and tissue function.
Yuwen Wang   +5 more
wiley   +1 more source

Measuring the Cosmic Web

open access: yesOpen Astronomy, 2011
A quantitative study of the clustering properties of the cosmic web as a function of absolute magnitude and color is presented using the SDSS Data Release 7 galaxy survey. Mark correlations are included in the analysis.
Müller Volker   +2 more
doaj   +1 more source

Deep MOS Spectroscopy of NGC 1316 Globular Clusters

open access: yesGalaxies, 2017
The giant elliptical galaxy NGC 1316 is the brightest galaxy in the Fornax cluster, and displays a number of morphological features that might be interpreted as an intermediate age merger remanent (∼3 Gyr).
Leandro A. Sesto   +3 more
doaj   +1 more source

Mimicking Symmetry‐Breaking Einstein Ring by Optical Lens

open access: yesAdvanced Photonics Research, EarlyView.
This article uses an optical lens to emulate the gravitational lensing effect and observe the Einstein ring (ER) patterns. The symmetry‐breaking ER, i.e., Einstein cross, is observed utilizing a rotation‐symmetry‐breaking hemi‐ellipsoid lens. Deformed Einstein cross patterns induced by noncollinearly alignment of the light source–lens–observer are ...
Jun‐Liang Duan   +5 more
wiley   +1 more source

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