Results 71 to 80 of about 273,575 (267)

The Stellar Halo of the Spiral Galaxy NGC 1560 [PDF]

The Astrophysical Journal, 2018
Abstract We report on the detection of a stellar halo around NGC 1560, a 109 M ⊙ spiral galaxy member of the Maffei group. We obtained deep images in the r- and i-bands using the 10.4 m Gran Telescopio Canarias in a field centered at ∼3.7 arcmin (projected distance of 3.5 kpc) from the center of this ...
Laura Greggio, Renato Falomo, Riccardo Scarpa   +2 more
openaire   +3 more sources

HeaTrace: A Parametric Design‐to‐Fabrication Workflow for Thermally Programmable Soft Robots

Advanced Intelligent Systems, EarlyView.
A programmable thermal actuation workflow enables soft robots to be designed and fabricated with embedded heaters that drive multiple responses. By combining performance‐driven heater design with multimaterial fabrication, the system supports thermally triggered shape change, stiffness tuning, and thermochromic visual response, as demonstrated through ...
Naresh Kumar Thanigaivel, Thileepan Stalin, Elgar Kanhere, Aby Raj Plamootil Mathai, Konstantin Sakharov, Yong Lin, Hirusha Madhuwantha Loku Hettige, Gumawang Hiramandala, Shlomo Magdassi, Pablo Valdivia Y Alvarado   +9 more
wiley   +1 more source

The formation of satellite galaxies and their associated black holes [PDF]

, 2006
Not ...
Libeskind, Noam Isaac
core  

Optimized Wavy Thermal Radiative Analysis of Electrochemically Ternary Hybrid Nanomaterials Affected by an Induced Magnetic Force: An ANN‐Based Levenberg–Marquardt Backpropagation Approach

Advanced Physics Research, EarlyView.
This diagram illustrates the wavy flow configuration of the model in a Cartesian coordinate system. It represents the heat and mass transfer characteristics of ternary hybrid nanofluids over a vertically wavy surface in the presence of an induced magnetic field and double‐diffusive mixed convection.
Latif Ahmad, Saleem Javed, Umair Khan, Muhammad Iqbal, Syed Modassir Hussain   +4 more
wiley   +1 more source

Stellar-to-halo mass relation of cluster galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 2017
In the hierarchical formation model, galaxy clusters grow by accretion of smaller groups or isolated galaxies. During the infall into the centre of a cluster, the properties of accreted galaxies change. In particular, both observations and numerical simulations suggest that its dark matter halo is stripped by the tidal forces of the host. We use galaxy-
Pereira, Maria, Shan, Huanyuan, Niemiec, Anna, Jullo, Eric, Limousin, Marceau, Giocoli, Carlo, Erben, Thomas, Hildebrant, Hendrik, Kneib, Jean-Paul, Leauthaud, Alexie, Makler, Martin, Moraes, Bruno, Pereira, Maria, Shan, Huanyuan, Rozo, Eduardo, Rykoff, Eli, Van Waerbeke, Ludovic, Moraes, Bruno, Shan, Huanyuan, Rozo, Eduardo, Pereira, Maria, Leauthaud, Alexie, Hildebrant, Hendrik, Jullo, Eric, Rykoff, Eli, Erben, Thomas, Limousin, Marceau, Makler, Martin, Kneib, Jean-Paul, Van Waerbeke, Ludovic, Giocoli, Carlo, Niemiec, Anna   +31 more
openaire   +5 more sources

Influence of Dynamical Friction on the Unstable Manifolds of Lagrange Points in Barred Galaxies

Astronomische Nachrichten, EarlyView.
ABSTRACT Some time ago the idea has been proposed that rings and spirals in barred galaxies are shaped by the unstable manifolds of the Lagrange points sitting near the ends of the bar. The topic of the present article is an investigation of whether the numerical support for this suggestion can be improved by the inclusion of dynamical friction into ...
Christof Jung
wiley   +1 more source

First statistical constraints on galactic-scale outflow properties traced by their extended Mg II emission with MUSE

Astronomy & Astrophysics
Galaxies evolve within vast gaseous halos that fuel star formation and carry signatures of feedback-driven outflows. Deep integral field data have enabled the study of Mg IIλλ2796, 2803 halos, which trace galaxy-scale outflows in emission, and while ...
Pessa Ismael, Wisotzki Lutz, Urrutia Tanya, Bouché Nicolas F., Leclercq Floriane, Augustin Ramona, Guo Yucheng, Kozlova Daria, Kusakabe Haruka, Pharo John   +9 more
doaj   +1 more source

Direct SMBH Formation Driven by Runaway Stellar Collisions in Globally Unstable Stellar Systems

Astronomische Nachrichten, EarlyView.
ABSTRACT The fueling problem addresses the ultimate fate of the reservoirs of gas and stars driven into the deepest gravitational potential wells of galaxies, thus it may contain the Universe's densest concentrations of gas and stars. This raises a key question: does the infalling material collapse directly into a supermassive black hole, or can it ...
Marcelo C. Vergara, Andrés Escala
wiley   +1 more source

Probing the Dark Matter Halos of External Galaxies with Stellar Streams

The Astrophysical Journal
Stellar streams have proven to be powerful tools for measuring the Milky Way’s gravitational potential and hence its dark matter (DM) halo. In the coming years, the Vera Rubin Observatory, Euclid, ARRAKIHS, and the Nancy Grace Roman Space Telescope will ...
Madison Walder, Denis Erkal, Michelle Collins, David Martínez-Delgado   +3 more
doaj   +1 more source

The stellar-to-halo mass relation of central galaxies across three orders of halo mass

Astronomy & Astrophysics
The stellar content of galaxies is tightly connected to the mass and growth of their host dark matter halos. Observational constraints on this relation remain limited, particularly for low-mass groups, leaving uncertainties in how galaxies assemble their
Toptun Victoria, Popesso Paola, Marini Ilaria, Vladutescu-Zopp Stephan, Dolag Klaus, Behroozi Peter, Lovisari Lorenzo, Ettori Stefano, Biffi Veronica, Yang Xiaohu, de Isídio Natanael, Mazengo Daudi T.   +11 more
doaj   +1 more source