Results 81 to 90 of about 126,212 (334)

The Galaxy Population of Low-Redshift Abell Clusters

, 2009
We present a study of the luminosity and color properties of galaxies selected from a sample of 57 low-redshift Abell clusters. We utilize the non-parametric dwarf-to-giant ratio (DGR) and the blue galaxy fraction (fb) to investigate the clustercentric ...
Abraham, Barai, Barkhouse, Barkhouse, Brown, Christlein, Cole, Dressler, Dubinski, Ebeling, Ellingson, Goto, H. K. C. Yee, Hansen, Jones, Lisker, López-Cruz, López-Cruz, López-Cruz, López-Cruz, Margoniner, McIntosh, Morris, Okamoto, Omar López-Cruz, Press, Roos, Sánchez-Janssen, Tran, Treu, Trujillo, Wake, Wayne A. Barkhouse, Yee, Yee   +34 more
core   +1 more source

A census of ultra-compact dwarf galaxies in nearby galaxy clusters [PDF]

, 2010
Ultra-compact dwarf galaxies (UCDs) are predominatly found in the cores of nearby galaxy clusters. Besides the Fornax and Virgo cluster, UCDs have also been confirmed in the twice as distant Hydra I and Centaurus clusters.
Bekki, Côté, Dabringhausen, Drinkwater, Fellhauer, Harris, Hasegan, Hilker, Jones, Jordán, Lotz, M. Hilker, Mieske, Mieske, Mieske, Mieske, Misgeld, Misgeld, Peng, Phillipps, Schuberth   +20 more
core   +2 more sources

A Trypsin‐Like Serine Protease ZmNAL1a Fine‐Tunes Maize Floral Transition and Flowering Time

Advanced Science, EarlyView.
This study identifies a trypsin‐like serine protease, ZmNAL1a, that moves from leaves to the shoot apical meristem. ZmNAL1a promotes the floral transition by degrading TOPLESS‐like corepressor REL2, which thereby enhances the expression of key flowering genes through elevating histone acetylation and relieving REL2–ZmEREBP147‐mediated transcriptional ...
Nan Li, Qiang Ning, Zhen Li, Qian Zhang, Peilu Zhu, Jimin Zhan, Yunfu Li, Zhen Li, Liang Dong, Qing Xiong, Jiahao Liao, Jie Liu, David Jackson, Munenori Kitagawa, Zuxin Zhang, Lei Liu   +15 more
wiley   +1 more source

A Tale of Three Dwarfs: No Extreme Cluster Formation in Extreme Star-forming Galaxies

The Astrophysical Journal, 2023
Nearly all current simulations predict that outcomes of the star formation process, such as the fraction of stars that form in bound clusters (Γ), depend on the intensity of star formation activity (Σ _SFR ) in the host galaxy.
Rupali Chandar, Miranda Caputo, Angus Mok, Sean Linden, Bradley C. Whitmore, Aimee Toscano, Jaidyn Conyer, David O. Cook, Janice C. Lee, Leonardo Ubeda, Richard White   +10 more
doaj   +1 more source

Searching for tidal tails - investigating galaxy harassment

, 2005
Galaxy harassment has been proposed as a physical process that morphologically transforms low surface density disc galaxies into dwarf elliptical galaxies in clusters.
Aboufadel, Babul, Bernstein, Binggeli, Butcher, Calcaneo-Roldan, Conselice, Dekel, Dressler, Efstathiou, Feldmeier, Ferguson, Gregg, Henriksen, J. I. Davies, Kambas, Klypin, Kogut, Mateo, Moore, Moore, Moore, Moore, Roberts, S. Roberts, S. Sabatini, Sabatini, Sabatini, Trentham, Trentham, Tully   +30 more
core   +1 more source

NuSAP Safeguards Centriole Integrity to Mediate CEP57‐CEP152 Torus Recruitment for Proper Engagement

Advanced Science, EarlyView.
This study reveals a novel role for the microtubule stabilizer NuSAP at centrioles. NuSAP depletion destabilizes the centriole's tubulin structure, causing premature disengagement, PCM defects, and mis‐localization of the CEP57‐CEP63‐CEP152 complex. By reinforcing centriole architecture, NuSAP enables early CEP57 loading and initiates a newly proposed ...
Shiyu Zhang, Zemin Jiang, Qiaoyun Yang, Hong Zheng, Minghao Wang, Chennianci Zhu, Lih‐Wen Deng, Karen Carmelina Crasta, Yih‐Cherng Liou   +8 more
wiley   +1 more source

Detectability of Solar Panels as a Technosignature

The Astrophysical Journal
In this work, we assess the potential detectability of solar panels made of silicon on an Earth-like exoplanet as a potential technosignature. Silicon-based photovoltaic cells have high reflectance in the ultraviolet-to-visible (UV-VIS) and in the near ...
Ravi Kopparapu, Vincent Kofman, Jacob Haqq-Misra, Vivaswan Kopparapu, Manasvi Lingam   +4 more
doaj   +1 more source

Optical identification of the companion to PSR J1911-5958A, the pulsar binary in the outskirts of NGC 6752

, 2003
We report on the identification of the optical counterpart of the binary millisecond pulsar PSR J1911-5958A, located in the outskirts of the globular cluster NGC 6752. At the position of the pulsar we find an object with V=22.08, B-V=0.38, U-B=-0.49. The
Althaus, Anderson, Assafin, C. G. Bassa, Callanan, Colpi, D'Amico, Dolphin, Dolphin, Driebe, Edmonds, F. Verbunt, Gratton, Holtzman, Holtzman, L. Homer, Lugger, M. H. van Kerkwijk, Phinney, Schlegel, Serenelli, Thorsett, Van Kerkwijk, Zacharias   +23 more
core   +1 more source

Alkylthienyl Side Groups in Conjugated Polymers Enable Localization of π Electron Density and Facilitate Efficient Hole Transfer

Advanced Science, EarlyView.
Resonance Raman spectroscopy is used in combination with other spectroscopic and morphology characterization techniques to unveil the mechanistic origin of the shift in synthetic strategy to alkylthienyl peripheral groups for high‐performing organic photovoltaics.
Hristo Ivov Gonev, Daniel G. Congrave, Junjun Guo, Jose Marin‐Beloqui, Max Allen, David Bacon, Ankita Kumari, Mohammad Saeed Shadabroo, He Zhu, Dibyajyoti Ghosh, Rachel C. Kilbride, Safa Shoaee, Hugo Bronstein, Tracey M. Clarke   +13 more
wiley   +1 more source

Radical Electroprecipitation from a Water|Oil|Electrode Interface Prolongs “Electro”Chemiluminescence of the Tris(2,2′‐bipyridyl)Ruthenium(II) and Benzoyl Peroxide System by 103

Angewandte Chemie, EarlyView.
Multiphase systems, including ones with liquid‐liquid phase boundaries, are the home to many curious chemistries including reaction acceleration and spontaneous formation of reactive species. Here we show the liquid‐liquid interface causes electrochemiluminescence and afterglow chemiluminescence lifetime to be enhanced by 220,000% in‐time, far beyond ...
Daniel M. Carrel, Brady R. Layman, Megan L. Hill, Jeffrey E. Dick   +3 more
wiley   +2 more sources