Results 11 to 20 of about 86,139 (299)

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   +6 more sources

Galaxy Cluster Environments of Radio Sources [PDF]

The Astronomical Journal, 2011
Using the Sloan Digital Sky Survey (SDSS) and the FIRST (Faint Images of the Radio Sky at Twenty Centimeters) catalogs, we examined the optical environments around double-lobed radio sources. Previous studies have shown that multi-component radio sources
Abazajian, Ascasibar, Bahcall, Blanc, Blanton, Blanton, Blanton, Blanton, Blanton, Blanton, Bower, Bradač, Brodwin, Budavári, Burns, Clarke, Condon, Croft, Csabai, Daddi, Dalton, Deltorn, Dickinson, D’Onghia, Elizabeth L. Blanton, Fanaroff, Gal, Garilli, Gladders, Gladders, Gladders, Gómez, Ivezić, Jee, Joshua D. Wing, Koester, Koester, Krick, Lin, Lin, Lin, Lumsden, Martini, McMahon, Menanteau, Miller, Oklopčić, Ostrander, Owen, Oyaizu, Proctor, Reiprich, Roettiger, Sarazin, Schlegel, Smith, Smolčić, Vanderlinde, Vikhlinin, Voges, Wen, York, Zirbel, Zwicky   +63 more
core   +2 more sources

Measures of galaxy environment - I. What is ‘environment’? [PDF]

Monthly Notices of the Royal Astronomical Society, 2011
The influence of a galaxy's environment on its evolution has been studied and compared extensively in the literature, although differing techniques are often used to define environment. Most methods fall into two broad groups: those that use nearest neighbours to probe the underlying density field and those that use fixed apertures.
Muldrew, Stuart I., Croton, Darren J., Skibba, Ramin A., Pearce, Frazer R., Ann, Hong Bae, Baldry, Ivan K., Brough, Sarah, Choi, Yun-Young, Conselice, Christopher J., Cowan, Nicolas B., Gallazzi, Anna, Gray, Meghan E., Gruetzbauch, Ruth, Li, I-Hui, Park, Changbom, Pilipenko, Sergey V., Podgorzec, Bret J., Robotham, Aaron S. G., Wilman, David J., Yang, Xiaohu, Zhang, Youcai, Zibetti, Stefano   +21 more
openaire   +5 more sources

INTERACTIONS OF GALAXIES IN THE GALAXY CLUSTER ENVIRONMENT [PDF]

The Astrophysical Journal, 2009
We study the dependence of galaxy properties on the clustercentric radius and the environment attributed to the nearest neighbor galaxy using the SDSS galaxies associated with the Abell galaxy clusters. We find that there exists a characteristic scale where the properties of galaxies suddenly start to depend on the clustercentric radius at fixed ...
Park, Changbom, Hwang, Ho Seong
openaire   +2 more sources

Searching for Conformity Across Cosmic Time with Local Group and Local Volume Star Formation Histories

The Astrophysical Journal, 2023
Conformity denotes the correlation of properties between pairs of galaxies as a function of separation. Correlations between properties such as the star formation rate (SFR), stellar mass, and specific star formation rate (sSFR) have implications for the
Charlotte Olsen, Eric Gawiser
doaj   +1 more source

The Effect of Environment on the Properties of the Most Massive Galaxies at 0.5 < z < 2.5 in the COSMOS-DASH Field

The Astrophysical Journal, 2023
How the environment influences the most massive galaxies is still unclear. To explore the effects of the environment on morphology and star formation in the most massive galaxies at high redshift, we select galaxies with stellar mass $\mathrm{log}({M}_ ...
Jie Song, GuanWen Fang, Yizhou Gu, Zesen Lin, Xu Kong   +4 more
doaj   +1 more source

EXTREMELY METAL-POOR GALAXIES: THE ENVIRONMENT [PDF]

The Astrophysical Journal, 2015
We have analyzed bibliographical observational data and theoretical predictions, in order to probe the environment in which extremely metal-poor dwarf galaxies (XMPs) reside. We have assessed the HI component and its relation to the optical galaxy, the cosmic web type (voids, sheets, filaments and knots), the overdensity parameter and analyzed the ...
M. E. Filho, J. Sánchez Almeida, C. Muñoz-Tuñón, S. E. Nuza, F. Kitaura, S. Heß   +5 more
openaire   +3 more sources

Galaxies with monstrous black holes in galaxy cluster environments [PDF]

Monthly Notices of the Royal Astronomical Society, 2019
Massive early-type galaxies follow a tight relation between the mass of their central supermassive black hole ($\rm M_{BH}$) and their stellar mass ($\rm M_{\star}$). The origin of observed positive outliers from this relation with extremely high $\rm M_{BH}$ ($> 10^{9} M_{\odot}$) remains unclear.
Lieke A C van Son, Christopher Barber, Yannick M Bahé, Joop Schaye, David J Barnes, Robert A Crain, Scott T Kay, Tom Theuns, Claudio Dalla Vecchia   +8 more
openaire   +7 more sources

Fraction of Clumpy Star-forming Galaxies at 0.5 ≤ z ≤ 3 in UVCANDELS: Dependence on Stellar Mass and Environment

The Astrophysical Journal, 2023
High-resolution imaging of galaxies in rest-frame UV has revealed the existence of giant star-forming clumps prevalent in high-redshift galaxies. Studying these substructures provides important information about their formation and evolution and informs ...
Zahra Sattari, Bahram Mobasher, Nima Chartab, Daniel D. Kelson, Harry I. Teplitz, Marc Rafelski, Norman A. Grogin, Anton M. Koekemoer, Xin Wang, Rogier A. Windhorst, Anahita Alavi, Laura Prichard, Ben Sunnquist, Jonathan P. Gardner, Eric Gawiser, Nimish P. Hathi, Matthew J. Hayes, Zhiyuan Ji, Vihang Mehta, Brant E. Robertson, Claudia Scarlata, L. Y. Aaron Yung, Christopher J. Conselice, Y. Sophia Dai, Yicheng Guo, Ray A. Lucas, Alec Martin, Swara Ravindranath   +27 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