Results 1 to 10 of about 111,631 (275)

H i 21 cm Extended Structures to the Northeast and Southwest of NGC 5595: VLA Observations of the Disk Galaxy Pair NGC 5595 and NGC 5597

The Astronomical Journal, 2023
We report VLA B-configuration observations of the H i 21 cm line on the close disk galaxy pair NGC 5595 and NGC 5597. At the angular resolution of the observations, ∼7.″1 × 4.″2, while most of the H i 21 cm in NGC 5595 and NGC 5597 has the same extent as
J. Antonio Garcia-Barreto, Emmanuel Momjian   +1 more
doaj   +1 more source

Galaxy interactions II: High density environments [PDF]

, 2011
With the aim to assess the role of dense environments in galaxy interactions, properties we present an analysis of close galaxy pairs in groups and clusters, obtained from the Sloan Digital Sky Survey Data Release 7 (SDSS-DR7).
Abazajian, Abazajian, Alonso, Alonso, Alonso, Baldry, Baldry, Balogh, Balogh, Balogh, Barton, Berlind, Blanton, Brinchmann, Ceccarelli, Colless, Cooper, Cooper, Coziol, D. G. Lambas, Darg, De Lucia, Dressler, Ellison, González, González, Gunn, Heiderman, Hopkins, Hopkins, Huchra, Kauffmann, Kennicutt, Lacerna, Lambas, Lambas, Lin, Mamon, Mamon, McIntosh, Merchán, Michel-Dansac, Morgan, N. Padilla, Padilla, Padilla, Padilla, Park, Patton, Pérez, Robaina, S. Alonso, Simard, Skibba, Skibba, Strauss, V. Mesa, von der Linden, Wang, Wong, Yang, York, Zapata, Zibetti, Zwicky   +64 more
core   +1 more source

Formation of a Massive Lenticular Galaxy Under the Tidal Interaction with a Group of Dwarf Galaxies

The Astrophysical Journal Letters, 2023
Based on the atomic-hydrogen (H i ) observations using the Five-hundred-meter Aperture Spherical radio Telescope, we present a detailed study of the gas-rich massive S0 galaxy NGC 1023 in a nearby galaxy group.
Jin-Long Xu, Ming Zhu, Kelley M. Hess, Naiping Yu, Chuan-Peng Zhang, Xiao-Lan Liu, Mei Ai, Peng Jiang, Jie Wang   +8 more
doaj   +1 more source

On the Effects of Local Environment on Active Galactic Nucleus (AGN) in the Horizon Run 5 Simulation

The Astrophysical Journal, 2023
We use the Horizon Run 5 cosmological simulation to study the effect of galaxy intrinsic properties and the local environment on active galactic nuclei (AGNs) characterized by their threshold of the accretion rate.
Ankit Singh, Changbom Park, Ena Choi, Juhan Kim, Hyunsung Jun, Brad K. Gibson, Yonghwi Kim, Jaehyun Lee, Owain Snaith   +8 more
doaj   +1 more source

A Multiwavelength Study of Active Galactic Nuclei in Post-merger Remnants

The Astrophysical Journal, 2023
We investigate the role of galaxy mergers in triggering active galactic nuclei (AGN) in the nearby universe. Our analysis is based on a sample of 79 post-merger remnant galaxies with deep X-ray observations from Chandra/XMM-Newton capable of detecting a ...
Wenhao Li, Preethi Nair, Jimmy Irwin, Sara Ellison, Shobita Satyapal, Niv Drory, Amy Jones, William Keel, Karen Masters, David Stark, Russell Ryan, Kavya Mukundan   +11 more
doaj   +1 more source

Self-interacting dark matter on small and large scales

SciPost Physics Proceedings, 2023
In the self-interacting dark matter paradigm (hereafter SIDM), dark matter (DM) is assumed to have non-gravitational interactions with itself. SIDM has been constrained by observations of galaxy clusters. More recently, measurements of large DM densities
Camila A. Correa
doaj   +1 more source

Dark matter mass loss in galaxy flybys: dependence on impact parameter [PDF]

Serbian Astronomical Journal, 2022
Galaxy flybys, interactions where two independent halos inter-penetrate but detach at a later time and do not merge, occur frequently at lower redshifts.
Mitrašinović A.
doaj   +1 more source

The Environment of ``E+A'' Galaxies [PDF]

, 1995
The violent star formation history of ``E+A'' galaxies and their detection almost exclusively in distant clusters is frequently used to link them to the ``Butcher-Oemler effect'' and to argue that cluster environment influences galaxy evolution.
Hashimoto, Y., Kirshner, R. P., Lin, H., Oemler, A., Shectman, S. A., Tucker, D., Zabludoff, A. I., Zaritsky, D.   +7 more
core   +2 more sources

Catching Tidal Dwarf Galaxies at a Later Evolutionary Stage with ALFALFA

The Astronomical Journal, 2023
We present deep optical imaging and photometry of four objects classified as “Almost-Dark” galaxies in the Arecibo Legacy Fast Arecibo L-band Feed Array (ALFALFA) survey because of their gas-rich nature and extremely faint or missing optical emission in ...
Laurin M. Gray, Katherine L. Rhode, Lukas Leisman, Pavel E. Mancera Piña, John M. Cannon, John J. Salzer, Lexi Gault, Jackson Fuson, Gyula I. G. Józsa, Elizabeth A. K. Adams, Nicholas J. Smith, Martha P. Haynes, Steven Janowiecki, Hannah J. Pagel   +13 more
doaj   +1 more source

Signatures of Galaxy-Cluster Interactions: Spiral Galaxy Rotation Curve Asymmetry, Shape, and Extent [PDF]

, 2000
The environmental dependencies of the characteristics of spiral galaxy rotation curves are studied in this work. We use our large, homogeneously collected sample of 510 cluster spiral galaxy rotation curves to test the claim that the shape of a galaxy's ...
Adabi M. G., Adami C., Adami C., Amram P., Beauvais C., Boselli A., Daniel A. Dale, Distefano A., Eduardo Hardy, Haynes M. P., Haynes M. P., Luis E. Campusano, Martha P. Haynes, Persic M., Riccardo Giovanelli, Richter O.-G., Sperandio M.   +16 more
core   +4 more sources