Results 111 to 120 of about 51,951 (281)

Formation of a Polar Ring Galaxy in a Galaxy Merger [PDF]

The Astrophysical Journal, 1998
We numerically investigate stellar and gas dynamics in star-forming and dissipative galaxy mergers between two disk galaxies with specific orbital configurations. We find that violent relaxation combined with gaseous dissipation in galaxy merging transforms two disk galaxies into one S0 galaxy with polar-rings: Both the central S0-like host and the ...
openaire   +2 more sources

Germanium‐Based Mid‐Infrared Integrated Photonics

Laser &Photonics Reviews, EarlyView.
The mid‐infrared (mid‐IR) spectral range is a part of the electromagnetic spectrum in which most of the molecules have vibrational and rotational resonances. Photonics integration in this wavelength range have thus seen a burst of interest in the recent years, mainly driven by applications related with the detection of chemical and biological ...
Delphine Marris‐Morini, Goran Z. Mashanovich, Milos Nedeljkovic, Carlos Alonso‐Ramos, Laurent Vivien, Jacopo Frigerio, Giovanni Isella   +6 more
wiley   +1 more source

The X-ray properties and structure of A3571 up to R500

Astronomy & Astrophysics
Abell 3571 is a nearby, X-ray-bright galaxy cluster located in the Shapley Supercluster. Although it appears morphologically relaxed in X-ray images, multiwavelength observations reveal subtle indications of residual dynamical activity likely associated ...
Zheng X., Yu H., Jia S., Li C., Hou X., Liu A., Chen Y., Feng H., Song L., Liu C., Lu F., Zhang S., Yuan W., Sanders J., Wang J., Nandra K., Cui W., Guan J., Han D., Jin C., Liu Y., Xu J., Zhang J., Zhao H., Zhao X.   +24 more
doaj   +1 more source

Gas flows in galaxy mergers

, 2021
In major galaxy mergers, the orbits of stars are violently perturbed, and gas is torqued to the centre, diluting the gas metallicity and igniting a starburst. In this paper, we study the gas dynamics in and around merging galaxies using a series of cosmological magnetohydrodynamical zoom-in simulations.
Sparre, Martin (Dr.), Whittingham, Joseph (Dr.), Damle, Mitali (Dr.), Hani, Maan H., Richter, Philipp (Prof. Dr.), Ellison, Sara L., Pfrommer, Christoph (Prof. Dr.), Vogelsberger, Mark   +7 more
openaire   +2 more sources

Patterns of wild meat and other protein consumption in the periphery of Salonga National Park, Democratic Republic of the Congo

People and Nature, EarlyView.
Abstract In Central Africa, human activities are severely impacting terrestrial and aquatic wildlife, threatening the food security of millions of people. Accordingly, sustainable use of wildlife is crucial for the nutrition and livelihoods of many rural communities in the region.
Zolo Admettons, Mattia Bessone, Josué Ausse Baraka, Josué Engombe Botomia, Espérance Miezi, Bénédicte Nsilu, Jonathan Nkamisha Mukole, Michel Opelele Omeno, Jean Semeki Ngabinzeke, Barbara Fruth   +9 more
wiley   +1 more source

Discovery and Multiwavelength Analysis of a New Dissociative Galaxy Cluster Merger: The Champagne Cluster

The Astrophysical Journal
We report the discovery of a new binary galaxy cluster merger, the Champagne Cluster (RM J130558.9+263048.4), using a detection method that identifies dynamically active clusters in the redMaPPer Sloan Digital Sky Survey DR8 photometric galaxy cluster ...
Faik Bouhrik, Rodrigo Stancioli, David Wittman   +2 more
doaj   +1 more source

Galaxy Mergers Moulding The Cgm

, 2017
Galaxies are surrounded by sizeable gas reservoirs which host a significant amount of metals: the circum-galactic medium (CGM). The CGM acts as a mediator between the galaxy and the extra-galactic medium. However, our understanding of how galaxy mergers, a major evolutionary transformation, impact the CGM remains deficient.
Hani, Maan H., Sparre, Martin, Ellison, Sara L., Torrey, Paul, Vogelsberger, Mark   +4 more
openaire   +1 more source

Optical Properties of 4248 IRAS Galaxies

, 2005
We have investigated optical properties of 4248 infrared galaxies (IRGs) by positionally matching data from the IRAS and the SDSS DR3. Our sample includes 3 hyper luminous infrared galaxies (L >10^13Lsun) and 178 ultra luminous infrared galaxies (10 ...
Abazajian, Allen, Arribas, Baldry, Balogh, Barnes, Barnes, Bekki, Bekki, Bekki, Bekki, Bekki, Bennett, Blake, Blanton, Borne, Borne, Bruzual, Bushouse, Clements, Cohen, Colina, Condon, Cui, Doyon, Flores, Genzel, Genzel, Goto, Goto, Goto, Goto, Goto, Goto, Goto, Goto, Hopkins, Hutchings, Keel, Kennicutt, Kewley, Kewley, Kim, Kim, Kim, Kim, Kormendy, Lawrence, Leech, Lutz, Makino, Mihos, Mihos, Miller, Moshir, Murphy, Nagar, Neugebauer, Ostriker, Quintero, Sanders, Sanders, Sanders, Sanders, Sanders, Sarazin, Scoville, Shimasaku, Soifer, Soifer, Soifer, Stanford, Stoughton, Strateva, Taniguchi, Tomotsugu Goto, Vader, Veilleux, Veilleux, Veilleux, Wright, Wu, Wu, Xia, Zabludoff   +84 more
core   +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

Merger-induced disturbance and temporal signatures in galaxy clusters: A combined phase space and photometric analysis

Astronomy & Astrophysics
We present a physically interpretable framework to quantify dynamical disturbances in galaxy clusters using projected two-dimensional phase-space information.
Kong Chuiyang, Dell’Antonio Ian
doaj   +1 more source