Results 1 to 10 of about 534,274 (263)

A Nonrepeating Fast Radio Burst in a Dwarf Host Galaxy [PDF]

The Astrophysical Journal, 2023
We present the discovery of an as yet nonrepeating fast radio burst (FRB), FRB 20210117A, with the Australian Square Kilometre Array Pathfinder (ASKAP), as a part of the Commensal Real-time ASKAP Fast Transients Survey.
Shivani Bhandari, Alexa C. Gordon, Danica R. Scott, Lachlan Marnoch, Navin Sridhar, Pravir Kumar, Clancy W. James, Hao Qiu, Keith W. Bannister, Adam T. Deller, Tarraneh Eftekhari, Wen-fai Fong, Marcin Glowacki, J. Xavier Prochaska, Stuart D. Ryder, Ryan M. Shannon, Sunil Simha   +16 more
doaj   +2 more sources

A Comparison of Outflow Properties in AGN Dwarfs versus Star-forming Dwarfs [PDF]

The Astrophysical Journal, 2023
Feedback likely plays a crucial role in resolving discrepancies between observations and theoretical predictions of dwarf galaxy properties. Stellar feedback was once believed to be sufficient to explain these discrepancies, but it has thus far failed to
Archana Aravindan, Weizhe Liu, Gabriela Canalizo, Sylvain Veilleux, Thomas Bohn, Remington O. Sexton, David S. N. Rupke, Vivian U   +7 more
doaj   +2 more sources

Properties of the Dwarf Galaxy Population in Galaxy Clusters [PDF]

, 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 > 2.22) share the same cluster environment as the brightest cluster members (Mr < -21), but are not
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
arxiv   +3 more sources

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. To explain the core-envelope kinematic decoupling observed in some dwarf galaxies in high-density environments ...
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
arxiv   +5 more sources

In Pursuit of the Least Luminous Galaxies [PDF]

Advances in Astronomy, 2010
The dwarf galaxy companions to the Milky Way are unique cosmological laboratories. With luminosities as low as 10−7LMW, they inhabit the lowest mass dark matter halos known to host stars and are presently the most direct tracers of the distribution, mass
Beth Willman
doaj   +5 more sources

Dwarf Galaxies in Voids: Dark Matter Halos and Gas Cooling [PDF]

Advances in Astronomy, 2010
Galaxy surveys have shown that luminous galaxies are mainly distributed in large filaments and galaxy clusters. The remaining large volumes are virtually devoid of luminous galaxies.
Matthias Hoeft, Stefan Gottlöber
doaj   +4 more sources

Faint dwarf galaxies in nearby clusters [PDF]

, 2010
Besides giant elliptical galaxies, a number of low-mass stellar systems inhabit the cores of galaxy clusters, such as dwarf elliptical galaxies (dEs/dSphs), ultra-compact dwarf galaxies (UCDs), and globular clusters. The detailed morphological examination of faint dwarf galaxies has, until recently, been limited to the Local Group (LG) and the two very
Dabringhausen, Gilmore, I. Misgeld, M. Hilker, Misgeld, Misgeld, S. Mieske   +6 more
arxiv   +3 more sources

Potential impact of the Sagittarius dwarf galaxy on the formation of young O-rich stars [PDF]

Nature Communications
The Milky Way underwent significant transformations in its early history, characterised by violent mergers and satellite galaxy accretion. However, recent observations reveal notable star formation events over the past 4 Gyr, likely triggered by ...
Tiancheng Sun, Shaolan Bi, Xunzhou Chen, Yuqin Chen, Yuxi Lucy Lu, Chao Liu, Tobias Buck, Xianfei Zhang, Tanda Li, Yaguang Li, Yaqian Wu, Zhishuai Ge, Lifei Ye   +12 more
doaj   +2 more sources

Antlia B: A faint dwarf galaxy member of the NGC 3109 association [PDF]

, 2015
We report the discovery of Antlia B, a faint dwarf galaxy at a projected distance of $\sim$72 kpc from NGC 3109 ($M_{V}$$\sim$$-$15 mag), the primary galaxy of the NGC 3109 dwarf association at the edge of the Local Group. The tip of the red giant branch
Crnojević, D., Grillmair, C. J., Hargis, J. R., Sand, D. J., Spekkens, K., Strader, J., Willman, B.   +6 more
core   +4 more sources

Dehnen halo effect on a black hole in an ultra-faint dwarf galaxy [PDF]

Journal of Cosmology and Astroparticle Physics, 2022
There had been recent advancement toward the detection of ultra-faint dwarf galaxies, which may serve as a useful laboratory for dark matter exploration since some of them contains almost 99% of pure dark matter. The majority of these galaxies contain no
R. C. Pantig, A. Övgün
semanticscholar   +1 more source