Results 1 to 10 of about 6,898,231 (288)

Galaxy interactions II: High density environments [PDF]

Astronomy & Astrophysics, 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   +8 more sources

Evidence for Ultra-diffuse Galaxy “Formation” through Galaxy Interactions [PDF]

The Astrophysical Journal Letters, 2018
Abstract We report the discovery of two ultra-diffuse galaxies (UDGs) that show clear evidence of an association with tidal material and an interaction with a larger galaxy halo, found during a search of the Wide portion of the Canada–France–Hawaii Telescope Legacy Survey. The two new UDGs, NGC 2708-Dw1 and NGC 5631-Dw1, are faint (M
P. Bennet, D. J. Sand, D. Zaritsky, D. Crnojević, K. Spekkens, A. Karunakaran   +5 more
openaire   +4 more sources

The Origin of Neutral Hydrogen Clouds in Nearby Galaxy Groups: Exploring the Range Of Galaxy Interactions [PDF]

, 2011
We combine high resolution N-body simulations with deep observations of neutral hydrogen (HI) in nearby galaxy groups in order to explore two well-known theories of HI cloud formation: HI stripping by galaxy interactions and dark matter minihalos with ...
Abraham, Bahcall, Barentine, Bell, Berrier, Bureau, Chemin, Chynoweth, Chynoweth, Chynoweth, Combes, Conselice, D'Onghia, Emil Polisensky, Fouque, Fraternali, Fukugita, Glen I. Langston, Gnedin, Hess, Hummel, Katie M. Chynoweth, Kelly Holley-Bockelmann, Kennicutt, Kennicutt, Kereš, Knapen, Knollmann, Kravtsov, Kuo, Langston, Laurikainen, Lockman, Lockman, Lotz, Miller, Mulder, Muller, Ott, Patton, Patton, Pisano, Putman, Schwarz, Shull, Simon, Simon, Strickland, Thilker, Thom, Wakker, Wakker, Westmeier, Zwaan   +53 more
core   +2 more sources

Galaxy interactions [PDF]

Astronomy & Astrophysics, 2012
We study galaxy pair samples selected from the Sloan Digital Sky Survey (SDSS-DR7) and we perform an analysis of minor and major mergers with the aim of investigating the dependence of galaxy properties on interactions. We build a galaxy pair catalog requiring rp < 25 kpc h-1 and Delta V < 350 km s-1 within redshift z<0.1. By visual inspection
Lambas, Diego G., Alonso, Sol, Mesa, Valeria, O'Mill, Ana Laura   +3 more
openaire   +4 more sources

COSMOS-Web: The Role of Galaxy Interactions and Disk Instabilities in Producing Starbursts at z < 4

The Astrophysical Journal
We study of the role of galaxy–galaxy interactions and disk instabilities in producing starburst activity in galaxies out to z = 4. For this, we use a sample of 387 galaxies with robust total star formation rate measurements from Herschel, gas masses ...
Andreas L. Faisst, Lilan Yang, M. Brinch, C. M. Casey, N. Chartab, M. Dessauges-Zavadsky, N. E. Drakos, S. Gillman, G. Gozaliasl, C. C. Hayward, O. Ilbert, P. Jablonka, A. Kaminsky, J. S. Kartaltepe, A. M. Koekemoer, V. Kokorev, E. Lambrides, D. Liu, C. Maraston, C. L. Martin, A. Renzini, B. E. Robertson, D. B. Sanders, Z. Sattari, N. Scoville, C. M. Urry, A. P. Vijayan, J. R. Weaver, H. B. Akins, N. Allen, R. C. Arango-Toro, O. R. Cooper, M. Franco, F. Gentile, S. Harish, M. Hirschmann, A. A. Khostovan, C. Laigle, R. L. Larson, M. Lee, Z. Liu, A. S. Long, G. Magdis, R. Massey, H. J. McCracken, J. McKinney, L. Paquereau, J. Rhodes, R. M. Rich, M. Shuntov, J. D. Silverman, M. Talia, S. Toft, J. A. Zavala   +53 more
doaj   +2 more sources

Low-mass Galaxy Interactions Trigger Black Hole Activity [PDF]

The Astrophysical Journal Letters
The existence of high- z overmassive supermassive black holes represents a major conundrum in our understanding of black hole evolution. In this Letter, we probe from the observational point of view how early Universe environmental conditions could have ...
Marko Mićić, Jimmy A. Irwin, Preethi Nair, Brenna N. Wells, Olivia J. Holmes, Jackson T. Eames   +5 more
doaj   +2 more sources

Dwarf Galaxy Formation Induced by Galaxy Interactions [PDF]

The Astrophysical Journal, 2000
9 pages (including 1 figure), To appear in ApJ, 543 (Part 1) Nov 1, 2000 (ApJ volume Nr was wrong in the previous version ...
Okazaki, T., Taniguchi, Y.
openaire   +4 more sources

On the frequency, intensity and duration of starburst episodes triggered by galaxy interactions and mergers [PDF]

, 2008
We investigate the intensity enhancement and the duration of starburst episodes, triggered by major galaxy interactions and mergers. To this aim, we analyze two large statistical datasets of numerical simulations.
A.-L. Melchior, Arp, Avila-Reese, Avila-Reese, B. Semelin, Barnes, Barnes, Barnes, Barnes, Bell, Bergvall, Boissier, Bournaud, Bournaud, Bournaud, Bournaud, Bournaud, Bridge, Charmandaris, Cole, Combes, Conselice, Cox, Daddi, Daddi, Daddi, de Blok, de Blok, de Grijs, Di Matteo, Diemand, Duc, Duc, Elbaz, Elmegreen, Elmegreen, Elmegreen, Evrard, F. Bournaud, F. Combes, Flores, Förster Schreiber, Gao, Gentile, Genzel, Georgakakis, Giallongo, Gingold, Hernquist, Hernquist, Hernquist, James, Kapferer, Katz, Kennicutt, Kennicutt, Kuzio de Naray, Kuzio de Naray, Larson, Lucy, M. Martig, Mao, Marchesini, Martig, McGaugh, Mihos, Mihos, Mihos, Mihos, Mihos, Navarro, Navarro, P. Di Matteo, Sanders, Semelin, Shapiro, Silk, Springel, Springel, Springel, Springel, Steinmetz, Struck, Swaters, Tacconi, Thacker, van den Bosch, van den Bosch, Walter, Wang, Weedman, Wong   +91 more
core   +4 more sources

AGNs and galaxy interactions [PDF]

, 2007
We perform a statistical analysis of AGN host characteristics and nuclear activity for AGNs in pairs and without companions. Our study concerns a sample of AGNs derived from the SDSS-DR4 data by Kauffmann et al (2003) and pair galaxies obtained from the same data set by Alonso et al. (2006).
Alonso, M. Sol, Lambas, Diego G., Tissera, Patricia, Coldwell, Georgina   +3 more
openaire   +3 more sources

Galaxy interactions are the dominant trigger for local type 2 quasars [PDF]

Monthly notices of the Royal Astronomical Society, 2023
The triggering mechanism for the most luminous, quasar-like active galactic nuclei (AGN) remains a source of debate, with some studies favouring triggering via galaxy mergers and others finding little evidence in support of this mechanism.
J. C. S. Pierce, C. Tadhunter, C. R. Almeida, P. Bessiere, J. V. Heaton, S. Ellison, G. Speranza, Y. Gordon, C. O’Dea, L. Grimmett, L. Makrygianni   +10 more
semanticscholar   +1 more source