Results 11 to 20 of about 6,898,231 (288)

Galaxy Pairs in the Sloan Digital Sky Survey - II: The Effect of Environment on Interactions

Monthly Notices of the Royal Astronomical Society, 2010
We use a sample of close galaxy pairs selected from the Sloan Digital Sky Survey Data Release 4 (SDSS DR4) to investigate in what environments galaxy mergers occur and how the results of these mergers depend on differences in local galaxy density.
Alan W. McConnachie, Alonso, Alonso, Baldry, Baldry, Balogh, Bamford, Barton, Barton, Barton, Basu-Zych, Bekki, Bekki, Bekki, Bergvall, Blanton, Blanton, Brasseur, Bridge, Brinchmann, Chung, Cox, Darg, David R. Patton, De Propris, Deng, Deng, Di Matteo, Donzelli, Dressler, Ellison, Ellison, Geller, Gomez, Heiderman, Holmberg, Ivan K. Baldry, J. Trevor Mendel, Jonsson, Just, Kannappan, Kauffmann, Kauffmann, Kennicutt, Kewley, Knapen, Lambas, Lewis, Li, Lin, Lin, Liu, Lotz, Lotz, Luc Simard, Luo Z.-J. Shu, Makino, Masjedi, McConnachie, McConnachie, McGee, McIntosh, Mihos, Mihos, Miller, Nikolic, Park, Park, Patton, Patton, Perez, Perez, Perez, Poggianti, Postman, Robaina, Rogers, Sara L. Ellison, Simard, Skibba, Soto, Tal, Tran, Von Der Linden, Weinmann, Woods, Woods, Zhang   +87 more
core   +3 more sources

Effect of low-mass galaxy interactions on their star formation [PDF]

Astronomy & Astrophysics, 2023
According to the $\Lambda$ cold dark matter model of galaxy formation, the hierarchical assembly process is scale-free and interactions between galaxies in all mass ranges are expected.
Smitha Subramanian, Chayan Mondal, V. Kalari   +2 more
semanticscholar   +1 more source

Galaxy Interactions in Filaments and Sheets: Effects of the Large-scale Structures Versus the Local Density [PDF]

Research in Astronomy and Astrophysics, 2022
Major interactions are known to trigger star formation in galaxies and alter their color. We study the major interactions in filaments and sheets using SDSS data to understand the influence of large-scale environments on galaxy interactions.
Apashanka Das, B. Pandey, S. Sarkar
semanticscholar   +1 more source

Investigating the Effect of Galaxy Interactions on Star Formation at 0.5 < z < 3.0 [PDF]

Astrophysical Journal, 2022
Observations and simulations of interacting galaxies and mergers in the local universe have shown that interactions can significantly enhance the star formation rates (SFRs) and fueling of active galactic nuclei (AGN).
Ekta A. Shah, J. Kartaltepe, Christina T. Magagnoli, I. Cox, Caleb T. Wetherell, B. Vanderhoof, K. Cooke, A. Calabró, N. Chartab, C. Conselice, D. Croton, A. de la Vega, N. Hathi, O. Ilbert, H. Inami, D. Kocevski, A. Koekemoer, B. Lemaux, L. Lubin, K. Mantha, S. Marchesi, M. Martig, J. Moreno, B. A. Pampliega, D. Patton, M. Salvato, E. Treister   +26 more
semanticscholar   +1 more source

New tests of dark sector interactions from the full-shape galaxy power spectrum [PDF]

Physical Review D, 2022
We explore the role of redshift-space galaxy clustering data in constraining non-gravitational interactions between dark energy (DE) and dark matter (DM), for which state-of-the-art limits have so far been obtained from late-time background measurements.
Rafael C. Nunes, S. Vagnozzi, Suresh Kumar, Eleonora di Valentino, O. Mena   +4 more
semanticscholar   +1 more source

Spatially resolved star formation and fuelling in galaxy interactions [PDF]

Monthly notices of the Royal Astronomical Society, 2020
We investigate the spatial structure and evolution of star formation and the interstellar medium (ISM) in interacting galaxies. We use an extensive suite of parsec-scale galaxy-merger simulations (stellar mass ratio = 2.5:1), which employs the ...
J. Moreno, P. Torrey, S. Ellison, D. Patton, Connor Bottrell, A. Bluck, M. Hani, C. Hayward, J. Bullock, P. Hopkins, L. Hernquist   +10 more
semanticscholar   +1 more source

SDSS-IV MaNGA: Spatial Evolution of Star Formation Triggered by Galaxy Interactions [PDF]

Astrophysical Journal, 2019
Galaxy interaction is considered a key driver of galaxy evolution and star formation (SF) history. In this paper, we present an empirical picture of the radial extent of interaction-triggered SF along the merger sequence.
H. Pan, Lihwai Lin, B. Hsieh, Jorge Barrera-Ballesteros, Jorge Barrera-Ballesteros, S. Sánchez, Chin-Hao Hsu, Chin-Hao Hsu, R. Keenan, P. Tissera, M. Boquien, Y. Dai, J. Knapen, J. Knapen, J. Knapen, R. Riffel, M. Argudo-Fernández, M. Argudo-Fernández, Ting Xiao, Ting Xiao, F. Yuan   +20 more
semanticscholar   +1 more source

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

Triggering Star Formation by Galaxy-Galaxy Interactions [PDF]

Symposium - International Astronomical Union, 2004
We analyzed the effects of having a close companion on the star formation activity of galaxies in the 8K galaxy pair catalog selected from the 2dFGRS. We found that, statistically, galaxies with rp < 25h−1 kpc and ΔV < 100km s−1 have enhanced star formation with respect to isolated galaxies with the same luminosity and redshift distribution.
Tissera, Patricia B., Lambas, Diego G., Alonso, M. Sol, Coldwell, Georgina   +3 more
openaire   +2 more sources

The Effect of Galaxy Interactions on Molecular Gas Properties [PDF]

Astrophysical Journal, 2018
Galaxy interactions are often accompanied by an enhanced star formation rate (SFR). Since molecular gas is essential for star formation, it is vital to establish whether and by how much galaxy interactions affect the molecular gas properties.
H. Pan, Lihwai Lin, B. Hsieh, T. Xiao, Yang Gao, S. Ellison, J. Scudder, J. Barrera-Ballesteros, F. Yuan, A. Saintonge, C. Wilson, H. Hwang, I. Looze, Yu Gao, L. Ho, E. Brinks, A. Mok, T. Brown, T. Davis, T. Williams, A. Chung, H. Parsons, M. Bureau, M. Sargent, E. Chung, Eunbin Kim, Tie Liu, M. Michałowski, T. Tosaki   +28 more
semanticscholar   +1 more source