Results 11 to 20 of about 87,935 (317)

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

“E+A” Galaxies: Environment and Evolution [PDF]

Symposium - International Astronomical Union, 1999
One important approach to the study of galaxy evolution is to identify those galaxies whose spectral and/or morphological characteristics suggest that they are in transition. For example, “E+A” galaxies, which have strong Balmer absorption lines and no significant [OII] emission, are generally interpreted as post-starburst galaxies in which the star ...
Ann I. Zabludoff
openalex   +4 more sources

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

What Triggers Galaxy Transformations? The Environments of Poststarburst Galaxies [PDF]

The Astrophysical Journal, 2006
ApJ in ...
Hogg, David W., Masjedi, Morad, Berlind, Andreas A., Blanton, Michael R., Quintero, Alejandro D., Brinkmann, J.   +5 more
openaire   +2 more sources

Retracted: Can the chemical industry solve the climate change?On the role of human energy production, renewable energies, and the potential of chemistry as a solution provider

Chemie Ingenieur Technik, EarlyView., 2023
Let us consider an alternative perspective on climate change: The sum of solar radiation and heat generated by human activity result in a net energy input of 1.96 times that of the Sun on the Earth's surface. The expanding global population is expected to exacerbate this issue. Potential solutions are proposed, including replacement and heat recycling.
Martin Bertau, Gerald Steiner
wiley   +1 more source

Bar Galaxies and Their Environments [PDF]

The Astronomical Journal, 2002
The prints of the Palomar Sky Survey, luminosity classificaiton and radial velocities were used to assign all northern Shapley-Ames galaxies to either (1) field, (2) group, or (3) cluster environments. This information for 930 galaxies shows no evidence for a dependence of bar frequency on galaxy environment.
openaire   +2 more sources

What Aspects of Galaxy Environment Matter? [PDF]

The Astrophysical Journal, 2007
We determine what aspects of the density field surrounding galaxies most affect their properties. For Sloan Digital Sky Survey galaxies, we measure the group environment, meaning the host group luminosity and the distance from the group center (hereafter, ``groupocentric distance'').
Blanton, Michael R., Berlind, Andreas A., Hogg, David W.   +2 more
openaire   +2 more sources