Results 31 to 40 of about 46,933 (305)

Impact of galaxy mergers on the colours of cluster galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 2019
ABSTRACT We examine the ultraviolet and optical colours of 906 cluster galaxies from the KASI-Yonsei Deep Imaging Survey of Clusters (KYDISC). The sample has been divided into two categories, morphologically disturbed and undisturbed galaxies, based on the visual signatures related to recent mergers. We find that galaxies with signatures
Sree Oh, Sree Oh, Jaemann Kyeong, Byeong-Gon Park, Byeong-Gon Park, Joon Hyeop Lee, Joon Hyeop Lee, Jinsu Rhee, Chang H. Ree, Yun-Kyeong Sheen, Hyunjin Jeong, Sukyoung K. Yi, Eon Chang Sung, Keunho Kim, Luis C. Ho, Minjin Kim, Minjin Kim   +16 more
openaire   +3 more sources

MOST SUBMILLIMETER GALAXIES ARE MAJOR MERGERS [PDF]

The Astrophysical Journal, 2010
We analyse subarcsecond resolution interferometric CO line data for twelve sub-millimetre-luminous (S850um > 5mJy) galaxies with redshifts between 1 and 3, presenting new data for four of them. Morphologically and kinematically most of the twelve systems appear to be major mergers. Five of them are well-resolved binary systems, and seven are compact
Reinhard Genzel, Alain Omont, Ric Davies, Pierre Cox, H. Engel, Scott Chapman, Andrew Blain, Frank Bertoldi, Ian Smail, Linda J. Tacconi, R. Neri, Thomas R. Greve, Rob Ivison, Rob Ivison   +13 more
openaire   +5 more sources

Improved Constraints on Mergers with SZ, Hydrodynamical simulations, Optical, and X-ray (ICM-SHOX) [PDF]

EPJ Web of Conferences
Galaxy cluster mergers are representative of a wide range of physics, making them an excellent probe of the properties of dark matter and the ionized plasma of the intracluster medium.
Silich E.M., Bellomi E., Sayers J., ZuHone J., Chadayammuri U., Golwala S., Hughes D., Montaña A., Mroczkowski T., Nagai D., Sánchez D., Stanford S.A., Wilson G., Zemcov M., Zitrin A.   +14 more
doaj   +1 more source

A complete catalogue of merger fractions in AGN hosts: No evidence for an increase in detected merger fraction with AGN luminosity

The Open Journal of Astrophysics, 2023
Despite the importance of Active Galactic Nuclei (AGN) in galaxy evolution, the mechanisms that fuel AGN activity remain poorly understood. Theoretical models suggest that major mergers of galaxies contribute strongly to AGN fuelling, particularly at ...
Carolin Villforth
doaj   +1 more source

The Effect of Mass Ratio on the Morphology and Time-scales of Disc Galaxy Mergers [PDF]

, 2009
The majority of galaxy mergers are expected to be minor mergers. The observational signatures of minor mergers are not well understood, thus there exist few constraints on the minor merger rate.
Abadi, Abazajian, Barnes, Bell, Bell, Bell, Bell, Binney, Bournaud, Bournaud, Boylan-Kolchin, Boylan-Kolchin, Broeils, Conselice, Conselice, Cox, Cox, Cox, Croton, Darg, De Jong, Di Matteo, Fakhouri, Genel, Guo, Hopkins, Hopkins, Jennifer M. Lotz, Joel R. Primack, Jogee, Johansson, Johnston, Jonsson, Jonsson, Jonsson, Katz, Kennicutt, Kitzbichler, Lacey, Leitherer, Lotz, Lotz, Lotz, Lotz, Moster, Naab, Naab, Patrik Jonsson, Patton, Purcell, Reichard, Robertson, Rocha, Rudnick, Shen, Somerville, Springel, Springel, Springel, Stewart, T. J. Cox, Velazquez   +61 more
core   +1 more source

A Chandra X-Ray Survey of Optically Selected Close Galaxy Pairs: Unexpectedly Low Occupation of Active Galactic Nuclei

The Astrophysical Journal, 2023
High-resolution X-ray observations offer a unique tool for probing the still-elusive connection between galaxy mergers and active galactic nuclei (AGNs).
Lin He, Meicun Hou, Zhiyuan Li, Shuai Feng, Xin Liu   +4 more
doaj   +1 more source

Spatially Offset Active Galactic Nuclei III: Discovery of Late-Stage Galaxy Mergers with The Hubble Space Telescope

, 2018
Galaxy pairs with separations of only a few kpc represent important stages in the merger-driven growth of supermassive black holes (SMBHs). However, such mergers are difficult to identify observationally due to the correspondingly small angular scales ...
Barrows, R. Scott, Comerford, Julia M., Greene, Jenny E.   +2 more
core   +1 more source

Automatic quantitative morphological analysis of interacting galaxies [PDF]

, 2013
The large number of galaxies imaged by digital sky surveys reinforces the need for computational methods for analyzing galaxy morphology. While the morphology of most galaxies can be associated with a stage on the Hubble sequence, morphology of galaxy ...
Holincheck, Anthony, Shamir, Lior, Wallin, John   +2 more
core   +1 more source

Galaxy Zoo: Mergers – Dynamical models of interacting galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 2016
The dynamical history of most merging galaxies is not well understood. Correlations between galaxy interaction and star formation have been found in previous studies, but require the context of the physical history of merging systems for full insight into the processes that lead to enhanced star formation.
Holincheck, Anthony J., Wallin, John F., Borne, Kirk, Fortson, Lucy, Lintott, Chris, Smith, Arfon M., Bamford, Steven, Keel, William C., Parrish, Michael   +8 more
openaire   +6 more sources

The Outer Stellar Halos of Galaxies: how Radial Merger Mass Deposition, Shells and Streams depend on Infall-Orbit Configurations

, 2019
Galaxy mergers are a fundamental part of galaxy evolution. To study the resulting mass distributions of different kinds of galaxy mergers, we present a simulation suite of 36 high-resolution isolated merger simulations, exploring a wide range of ...
Burkert, Andreas, Dolag, Klaus, Hoffmann, Tadziu L., Karademir, Geray S., Moster, Benjamin P., Remus, Rhea-Silvia, Steinwandel, Ulrich, Zhang, Jielai   +7 more
core   +1 more source