Results 91 to 100 of about 89,392 (297)

A comprehensive study of the radio properties of brightest cluster galaxies [PDF]

, 2015
We examine the radio properties of the brightest cluster galaxies (BCGs) in a large sample of X-ray selected galaxy clusters comprising the Brightest Cluster Sample (BCS), the extended BCS and ROSAT-ESO Flux Limited X-ray cluster catalogues.
M. Hogan, M. Hogan, M. Hogan, A. Edge, J. Hlavacek-Larrondo, J. Hlavacek-Larrondo, K. Grainge, S. Hamer, E. Mahony, H. Russell, A. Fabian, B. McNamara, B. McNamara, R. Wilman   +13 more
semanticscholar   +1 more source

Discovery and Initial Investigation of a New Low Surface Brightness Planetary Nebula Candidate at High Galactic Latitude

Astronomische Nachrichten, EarlyView.
ABSTRACT Planetary nebulae represent a late evolutionary phase of low‐ to intermediate‐mass stars. In this article, we present the serendipitous discovery of a previously unknown, faint potential Galactic planetary nebula (PN) in the constellation Camelopardalis, identified during a survey‐inspection, aiming at the detection of dwarf companions of the ...
W. E. Celnik, P. Köchling, S. Kotov, J. Kozok, Y. Galata, L. Magrini, A. Moiseev, M. Nischang, C. Reese, P. Remmel, P. Riepe, T. Zilch, K. Werner   +12 more
wiley   +1 more source

Spectral Energy Distribution Fitting of Globular Clusters in NGC 4874: Masses and Metallicities

The Astrophysical Journal
In most nearby galaxies, photometry of the integrated light of their globular clusters (GCs) has been obtained in only two filters, yielding just a single color index.
Kate Hartman, William E. Harris, Jinoo Kim   +2 more
doaj   +1 more source

High‐Coercivity Nd2Fe14B/α‐Fe Nanocomposites With Ultrafine Nanocrystalline Structure via Zr‐Induced Synchronous Precipitation

Rare Metals, EarlyView.
ABSTRACT Nanocomposite permanent magnets with reduced rare‐earth content represent a promising class of materials for next‐generation high‐performance applications. However, asynchronous precipitation of soft and hard magnetic phases often results in grain size mismatch and limited coercivity.
Xiaowei Zhang, Jun Li, Chang Liu, Renquan Wang, Hongfu Liu, Xiaotao Bao, Ying Liu   +6 more
wiley   +1 more source

Cross-correlation Weak Lensing of SDSS galaxy Clusters II: Cluster Density Profiles and the Mass--Richness Relation [PDF]

, 2007
We interpret and model the statistical weak lensing measurements around 130,000 groups and clusters of galaxies in the Sloan Digital Sky Survey presented by Sheldon et al. 2007 (Paper I).
Annis, James, Becker, Matthew R., Evrard, August E., Frieman, Joshua A., Johnston, David E., Koester, Benjamin P., McKay, Timothy A., Rozo, Eduardo, Sheldon, Erin S., Wechsler, Risa H.   +9 more
core   +3 more sources

ULTRAVIOLET MORPHOLOGY AND UNOBSCURED UV STAR FORMATION RATES OF CLASH BRIGHTEST CLUSTER GALAXIES [PDF]

, 2015
Brightest cluster galaxies (BCGs) are usually quiescent, but many exhibit star formation. Here we exploit the opportunity provided by rest-frame UV imaging of galaxy clusters in the Cluster Lensing and Supernovae with Hubble (CLASH) Multi-Cycle Treasury ...
M. Donahue, T. Connor, K. Fogarty, Yuan Li, G. Voit, M. Postman, A. Koekemoer, J. Moustakas, L. Bradley, H. Ford   +9 more
semanticscholar   +1 more source

Prioritized Real‐Time UAV‐Based Vessel Detection for Efficient Maritime Search

Journal of Field Robotics, EarlyView.
ABSTRACT Real‐time vessel detection in maritime environments is crucial for diverse applications requiring speed and accuracy. Static camera views often introduce blind spots, compromising detection efficiency. This paper proposes a novel, real‐time UAV‐based system that uses a dynamic camera control strategy to address this limitation.
Lyes Saad Saoud, Zikai Jia, Siyuan Yang, Muhayy Ud Din, Lakmal Seneviratne, Shaoming He, Irfan Hussain   +6 more
wiley   +1 more source

High radio-frequency properties and variability of brightest cluster galaxies [PDF]

, 2015
We consider the high radio-frequency (15–353 GHz) properties and variability of 35 brightest cluster galaxies (BCGs). These are the most core-dominated sources drawn from a parent sample of more than 700 X-ray selected clusters, thus allowing us to ...
M. Hogan, M. Hogan, M. Hogan, A. Edge, J. Geach, K. Grainge, J. Hlavacek-Larrondo, J. Hlavacek-Larrondo, T. Hovatta, T. Hovatta, A. Karim, B. McNamara, B. McNamara, C. Rumsey, H. Russell, P. Salom'e, H. Aller, M. Aller, D. Benford, A. Fabian, A. Readhead, E. Sadler, R. D. E. Saunders   +22 more
semanticscholar   +1 more source

Stellar populations in brightest cluster galaxies [PDF]

Proceedings of the International Astronomical Union, 2009
AbstractWe present the results of an investigation of a large sample of brightest cluster galaxies (BCGs), their kinematic and stellar population properties and the relationships between these and the properties of the host clusters. We have obtained high signal-to-noise, long-slit spectra of 49 BCGs in the nearby Universe with the Gemini and WHT ...
Loubser, S, Sanchez-Blazquez, P, Soechting, I, Sansom, A   +3 more
openaire   +1 more source

Survey on AI‐Enabled Computer Vision Technologies and Applications for Space Robotic Missions

Journal of Field Robotics, EarlyView.
ABSTRACT This survey provides a comprehensive overview of recent advancements and challenges in Artificial Intelligence (AI)‐enabled computer vision (CV) techniques for space robotic missions, spanning critical phases such as Entry, Descent, and Landing (EDL), orbital operations, and planetary surface exploration.
Maciej Quoos, Steven Kay, Julia Wajoras, Robert Field, Evridiki V. Ntagiou, Fakher Mohammad, Yang Gao   +6 more
wiley   +1 more source