Results 11 to 20 of about 210,241 (186)

A Nearby Isolated Dwarf: Star Formation and Structure of ESO 006–001

The Astrophysical Journal, 2023
Observations with the Hubble Space Telescope unexpectedly revealed that the dwarf galaxy ESO 006–001 is a near neighbor to the Local Group at a distance of 2.70 ± 0.11 Mpc.
Lidia N. Makarova, R. Brent Tully, Gagandeep S. Anand, Trystan S. Lambert, Margarita E. Sharina, Bärbel S. Koribalski, Renée C. Kraan-Korteweg   +6 more
doaj   +1 more source

A Search for Gas-Rich Dwarf Galaxies in the Local Universe with ALFALFA and the WIYN One Degree Imager

The Astronomical Journal, 2023
We present results from an optical search for Local Group dwarf galaxy candidates associated with the Ultra-Compact High Velocity Clouds (UCHVCs) discovered by the ALFALFA neutral hydrogen survey.
Katherine L. Rhode, Nicholas J. Smith, William F. Janesh, John J. Salzer, Elizabeth A. K. Adams, Martha P. Haynes, Steven Janowiecki, John M. Cannon   +7 more
doaj   +1 more source

Discovery of new globular clusters in the Sagittarius dwarf galaxy [PDF]

, 2021
Context. Globular clusters (GCs) are witnesses of the past accretion events onto the Milky Way. In particular, the GCs of the Sagittarius (Sgr) dwarf galaxy are important probes of an on-going merger. Aims.
Garro, E. R., Smith, L., J. J. Clariá, Palma, Tali, D. Minniti, Minniti, D., Vivanco Cádiz, F., Lucas, P. W., M. Hempel, Smith, L. C., Saito, R., Gregg, M., Pullen, J. B., Saito, R. K., Majaess, D., Alonso-García, J., Rejkuba, M., J. G. Fernández-Trincado, Palma, T., L. C. Smith, J. Alonso-García, Fernández Trincado, J. G., M. Rejkuba, V. Ripepi, M. Gregg, Lucas, P., J. B. Pullen, R. K. Saito, Gómez, M., Minniti, Dante, F. Vivanco Cádiz, Pullen, J., Clariá, Juan José, Cádiz, F. Vivanco, Clariá, J. J., Alonso García, J., P. W. Lucas, T. Palma, D. Majaess, Clariá, J., Ripepi, V., M. Gómez, Fernández-Trincado, J., E. R. Garro, Hempel, M., Fernández-Trincado, J. G., Garro, E.   +46 more
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Stellar streams around dwarf galaxies in the local Universe

Astronomy & Astrophysics
Context. While mergers between massive galaxies and their dwarf satellites have been well studied, the properties of dwarf–dwarf satellite mergers are not well constrained.
Sakowska Joanna D., Martínez-Delgado David, Pearson Sarah, Riquel-Castilla Francisco J., Starkenburg Tjitske K., Donatiello Giuseppe, Deason Alis, Erkal Denis, Taylor Ethan D.   +8 more
doaj   +1 more source

UGC 7639: A Dwarf Galaxy in the Canes Venatici I Cloud

Advances in Astronomy, 2015
We want to get insight into the formation mechanism and the evolution of UGC 7639, a dwarf galaxy in the Canes Venatici I Cloud (CVnIC). We used archival multiwavelength data to constrain its global properties. Ultraviolet images show that UGC 7639 inner
L. M. Buson, D. Bettoni, P. Mazzei, G. Galletta   +3 more
doaj   +1 more source

Star Forming Dwarf Galaxies

, 2011
Star forming dwarf galaxies (SFDGs) have a high gas content and low metallicities, reminiscent of the basic entities in hierarchical galaxy formation scenarios.
Bergvall, Nils,, Nils Bergvall
core   +1 more source

The mass content of the Sculptor dwarf spheroidal galaxy [PDF]

, 2009
We present a new determination of the mass content of the Sculptor dwarf spheroidal galaxy, based on a novel approach which takes into account the two distinct stellar populations present in this galaxy.
Battaglia, G., Irwin, M., Tolstoy, E., Helmi, A.   +3 more
core   +1 more source

Dwarfs in Void Environments (DIVE): The Stellar Kinematics of Void Dwarf Galaxies Using the Keck Cosmic Web Imager

The Astrophysical Journal, 2023
Dwarf galaxies located in extremely underdense cosmic voids are excellent test beds for disentangling the effects of large-scale environments on galaxy formation and evolution. We present the first results of the Dwarfs in Void Environments Survey, which
Mithi A. C. de los Reyes, Evan N. Kirby, Zhuyun Zhuang, Charles C. Steidel, Yuguang Chen, Coral Wheeler   +5 more
doaj   +1 more source

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

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   +1 more source

Quantifying Bursty Star Formation in Dwarf Galaxies

The Open Journal of Astrophysics
Dwarf galaxy star formation histories are theoretically expected to be bursty, potentially leaving distinct imprints on their chemical evolution. We propose that episodic starbursts with quiescent periods longer than ~100 Myr should lead to discontinuous
Yuan-Sen Ting, Alexander Ji
doaj   +1 more source