Results 111 to 120 of about 339,165 (211)

A New Sample of Dwarf Galaxies with X-Ray-selected Active Galactic Nucleus Candidates from the eROSITA All-Sky Survey

The Astrophysical Journal
To investigate the population of massive black holes in dwarf galaxies, we conduct a systematic search for active galactic nuclei (AGNs) using data from the first data release of the eROSITA All-Sky Survey (eRASS). We crossmatch dwarf galaxy positions in
John-Michael Eberhard, Amy E. Reines
doaj   +1 more source

Angular Momentum in Dwarf Galaxies

Open Astronomy, 2014
AbstractWe study the “angular momentum catastrophe” in the framework of interaction among baryons and dark matter through dynamical friction. By means of Del Popolo (2009) model we simulate 14 galaxies similar to those investigated by van den Bosch, Burkert and Swaters (2001), and calculate the distribution of their spin parameters and the angular ...
openaire   +3 more sources

Active Dwarf Galaxy Database. II. Connections between Host Galaxy Properties and Black Hole Accretion Signatures

The Astrophysical Journal
We investigate the connection between accretion signatures and host galaxy properties in the context of how active dwarf galaxies are identified. We use the database constructed in E. J. Wasleske & V. F.
Erik J. Wasleske, Vivienne F. Baldassare, Christopher M. Carroll   +2 more
doaj   +1 more source

Environment Matters: Predicted Differences in the Stellar Mass–Halo Mass Relation and History of Star Formation for Dwarf Galaxies

The Astrophysical Journal
We are entering an era in which we will be able to detect and characterize hundreds of dwarf galaxies within the Local Volume. It is already known that a strong dichotomy exists in the gas content and star formation properties of field dwarf galaxies ...
Charlotte R. Christensen, Alyson M. Brooks, Ferah Munshi, Claire Riggs, Jordan Van Nest, Hollis Akins, Thomas R. Quinn, Lucas Chamberland   +7 more
doaj   +1 more source

Intermediate Mass Ratio Inspirals in Milky Way Galaxies

The Astrophysical Journal
A consequence of a nonzero occupation fraction of massive black holes (MBHs) in dwarf galaxies is that these MBHs can become residents of larger galaxy halos via hierarchical merging and tidal stripping.
Jillian Bellovary, Yuantong Luo, Thomas R. Quinn, Ferah Munshi, Michael Tremmel, James Wadsley   +5 more
doaj   +1 more source

Chemical Cartography of the Sagittarius Stream with Gaia

The Astrophysical Journal
The stellar stream connected to the Sagittarius (Sgr) dwarf galaxy is the most massive tidal stream that has been mapped in the Galaxy, and is the dominant contributor to the outer stellar halo of the Milky Way (MW).
Emily C. Cunningham, Jason A. S. Hunt, Adrian M. Price-Whelan, Kathryn V. Johnston, Melissa K. Ness, Yuxi (Lucy) Lu, Ivanna Escala, Ioana A. Stelea   +7 more
doaj   +1 more source

SAGAbg. III. Environmental Stellar Mass Functions, Self-quenching, and the Stellar-to-halo Mass Relation in the Dwarf Galaxy Regime

The Astrophysical Journal
Recent efforts have extended our view of the number and properties of satellite galaxies beyond the Local Group firmly down to M _⋆  ∼ 10 ^6 M _⊙ . A similarly complete view of the field dwarf population has lagged behind.
Erin Kado-Fong, Yao-Yuan Mao, Yasmeen Asali, Marla Geha, Risa H. Wechsler, Mithi A. C. de los Reyes, Yunchong Wang, Ethan O. Nadler, Nitya Kallivayalil, Erik J. Tollerud, Benjamin Weiner   +10 more
doaj   +1 more source

Dwarf galaxy mass estimators versus cosmological simulations. [PDF]

Mon Not R Astron Soc, 2017
González-Samaniego A, Bullock JS, Boylan-Kolchin M, Fitts A, Elbert OD, Hopkins PF, Kereš D, Faucher-Giguère CA.   +7 more
europepmc   +1 more source

Connection between Dwarf Galaxies and Globular Clusters: Insights from the Perseus Cluster Using Subaru Imaging and Keck Spectroscopy

The Astrophysical Journal
We present a systematic study of 189 dwarf galaxies and their globular cluster (GC) systems in the Perseus Cluster, based on deep Subaru Hyper Suprime-Cam imaging and Keck spectroscopy, supplemented by literature data. This constitutes the largest sample
Yimeng Tang, Aaron J. Romanowsky, Song Huang, Nobuhiro Okabe, Jean P. Brodie, Kevin A. Bundy, Maria Luisa Buzzo, Timothy Carleton, Anna Ferré-Mateu, Duncan A. Forbes, Jonah S. Gannon, Steven R. Janssens, Arsen Levitskiy, Alexi M. Musick   +13 more
doaj   +1 more source

A spectroscopic study of the merging dwarf galaxy PGC 007782

Bibechana
We did a detailed spectroscopic study of PGC 007782, an interacting emission type dwarf galaxy. This study utilized the optical spectrum of emission lines to explore the system of interacting dwarf galaxies.
Shankar Timalsina, Daya Nidhi Chhatkuli
doaj   +1 more source