Results 81 to 90 of about 64,574 (197)

Enrichment of Strontium in Dwarf Galaxies [PDF]

The Astrophysical Journal, 2019
Light trans-iron elements such as Sr serve as the key to understanding the astrophysical sites of heavy elements. Spectroscopic studies of metal-poor stars have revealed large star-to-star scatters in the ratios of [Sr/Ba], which indicates that there are multiple sites for the production of Sr.
Takayuki R. Saitoh, Takayuki R. Saitoh, Yutaka Hirai, Shinya Wanajo, Shinya Wanajo   +4 more
openaire   +5 more sources

The Origin of the Large Magellanic Cloud Globular Cluster NGC 2005

The Astronomical Journal, 2023
The ancient Large Magellanic Cloud (LMC) globular cluster NGC 2005 has recently been reported to have an ex situ origin, thus, setting precedents that the LMC could have partially formed from smaller merged dwarf galaxies.
Andrés E. Piatti, Yutaka Hirai
doaj   +1 more source

The mass of dwarf spheroidal galaxies and the missing satellite problem

, 2005
We present the results from a suite of N-body simulations of the tidal stripping of two-component dwarf galaxies comprising some stars and dark matter. We show that recent kinematic data from the local group dwarf spheroidal (dSph) galaxies suggests that
Evans, N. Wyn, Gilmore, G., Kleyna, Jan T., Read, J. I., Wilkinson, M. I.   +4 more
core   +1 more source

Harassment Origin for Kinematic Substructures in Dwarf Elliptical Galaxies? [PDF]

, 2005
We have run high resolution N-body models simulating the encounter of a dwarf galaxy with a bright elliptical galaxy. The dwarf absorbs orbital angular momentum and shows counter-rotating features in the external regions of the galaxy.
A. C. González-García, Aguerri, Aguerri, Aguerri, Aguilar, Balcells, Balcells, Bender, Binggeli, Binggeli, Binggeli, Collett, De Rijcke, De Young, Dekel, Ferguson, Fish, Gallagher, Geha, Gendin, Harsoula, Hau, Hernquist, J. A. L. Aguerri, Jaffe, King, Kuijken, Kuijken, Lin, M. Balcells, Mateo, Mayer, Mo, Pedraz, Richer, Som Sunder, Swaters, Tremaine, van Zee   +38 more
core   +3 more sources

Lactea: Web‐Based Spectrum‐Preserving Multi‐Resolution Visualization of the GAIA Star Catalog

Computer Graphics Forum, Volume 44, Issue 3, June 2025.
Abstract The explosion of data in astronomy has resulted in an era of unprecedented opportunities for discovery. The GAIA mission's catalog, containing a large number of light sources (mostly stars) with several parameters such as sky position and proper motion, is playing a significant role in advancing astronomy research and has been crucial in ...
Reem Alghamdi, Markus Hadwiger, Guido Reina, Alberto Jaspe‐Villanueva   +3 more
wiley   +1 more source

Active Galactic Nucleus Quenching in Simulated Dwarf Galaxies

The Astrophysical Journal, 2023
We examine the quenching characteristics of 328 isolated dwarf galaxies $\left({10}^{8}\lt {M}_{\mathrm{star}}/{M}_{\odot }\lt {10}^{10}\right)$ within the Romulus25 cosmological hydrodynamic simulation.
Ray S. Sharma, Alyson M. Brooks, Michael Tremmel, Jillian Bellovary, Thomas R. Quinn   +4 more
doaj   +1 more source

Birth, life and survival of Tidal Dwarf Galaxies

, 2011
Advances on the formation and survival of the so-called Tidal Dwarf Galaxies (TDGs) are reviewed. The understanding on how objects of the mass of dwarf galaxies may form in debris of galactic collisions has recently benefited from the coupling of multi ...
BG Elmegreen, BJ Smith, D Pfenniger, F Bournaud, F Bournaud, F Bournaud, F Bournaud, F Renaud, G Gentile, IA Grenier, J Braine, JE Barnes, JE Hibbard, JI Read, KA Knierman, M Boquien, M Fellhauer, M Metz, M Milgrom, M Wetzstein, PA Duc, PA Duc, R Teyssier, S. Torres-Flores, T Okazaki, Y Yang   +25 more
core   +1 more source

HyperFLINT: Hypernetwork‐based Flow Estimation and Temporal Interpolation for Scientific Ensemble Visualization

Computer Graphics Forum, Volume 44, Issue 3, June 2025.
Abstract We present HyperFLINT (Hypernetwork‐based FLow estimation and temporal INTerpolation), a novel deep learning‐based approach for estimating flow fields, temporally interpolating scalar fields, and facilitating parameter space exploration in spatio‐temporal scientific ensemble data. This work addresses the critical need to explicitly incorporate
Hamid Gadirov, Qi Wu, David Bauer, Kwan‐Liu Ma, Jos B.T.M. Roerdink, Steffen Frey   +5 more
wiley   +1 more source

X-Ray Bright Active Galactic Nuclei in Local Dwarf Galaxies: Insights from eROSITA

The Astrophysical Journal
Although supermassive black holes (SMBHs) reside in the heart of virtually every massive galaxy, it remains debated whether dwarf galaxies commonly host SMBHs. Because low-mass galaxies may retain memory of the assembly history of their black holes (BHs),
Andrea Sacchi, Ákos Bogdán, Urmila Chadayammuri, Angelo Ricarte   +3 more
doaj   +1 more source

Properties of the Dwarf Galaxy Population in Galaxy Clusters

, 2008
We present the observational properties of the dwarf galaxy population (Mr > M*+1) corresponding to one of the largest samples of spectroscopically confirmed galaxy cluster members reported in the literature. We have observed that red dwarf galaxies (u-r
Aguerri, Aguerri, Aguerri, Allam, Arnaboldi, Biviano, Blanton, Böhringer, C. Muñoz-Tuñón, Carlberg, Conselice, Davies, Hogg, J. Alfonso L. Aguerri, Lisker, McIntosh, Phillipps, R. Sánchez-Janssen, Rakos, Stott, Strateva, Trujillo, van Dokkum, Voges, White, York, Zwicky   +26 more
core   +1 more source