Results 121 to 130 of about 2,162,294 (370)

Two Candidates for Dual AGN in Dwarf-dwarf Galaxy Mergers

The Astrophysical Journal, 2023
Dual active galactic nuclei (DAGN) are important for understanding galaxy-merger-triggered fueling of black holes and the hierarchical growth of structures.
Marko Mićić, Olivia J. Holmes, Brenna N. Wells, Jimmy A. Irwin   +3 more
doaj   +1 more source

XMM-Newton observations of the interacting galaxy pairs NGC 7771/0 and NGC 2342/1 [PDF]

, 2004
We present XMM‐Newton X-ray observations of the interacting galaxy pairs NGC 7771/7770 and NGC 2342/2341. In NGC 7771, for the first time we are able to resolve the X-ray emission into a bright central source plus two bright (L X > 10 40 erg s −1 ...
L. Jenkins, T. Roberts, M. Ward, A. M. U. O. Leicester, Harvard-Smithsonian Cfa   +4 more
semanticscholar   +1 more source

Evaluation of Zinc Borate and Melamine Polyphosphate Synergy on the Rheological, Thermal, Mechanical, Dimensional, and Flame Retardant Performance of rLLDPE/CaCO3 Composites for Pipes Applications

Journal of Applied Polymer Science, EarlyView.
A synergistic flame retardant containing melamine polyphosphate and zinc borate was prepared and applied to provide rLLDPE/CaCO3 composites with superior flame retardancy. ABSTRACT The use of recycled thermoplastics is crucial for addressing environmental challenges such as waste management and sustainability.
Antonio Benjamim Mapossa, Erick Gabriel Ribeiro dos Anjos, Uttandaraman Sundararaj   +2 more
wiley   +1 more source

Discovery of a Rare Group of Dwarf Galaxies in the Local Universe

The Astrophysical Journal Letters
We report the discovery of a rare isolated group of five dwarf galaxies located at z = 0.0086 ( D = 36 Mpc). All member galaxies are star forming, blue, and gas rich, with g − r indices ranging from 0.2 to 0.6 mag, and two of them show signs of ongoing ...
Sanjaya Paudel, Cristiano G. Sabiu, Suk-Jin Yoon, Pierre-Alain Duc, Jaewon Yoo, Oliver Müller   +5 more
doaj   +1 more source

Ongoing Mass Transfer in the Interacting Galaxy Pair NGC 1409/1410 [PDF]

, 2000
I present two-band Hubble Space Telescope (HST) STIS imaging and WIYN spectral mapping of ongoing mass transfer in the interacting galaxy pair NGC 1409/1410 (where NGC 1410 is the Seyfert galaxy also cataloged as III Zw 55).
W. Keel
semanticscholar   +1 more source

3C459: A highly asymmetric radio galaxy with a starburst

, 2003
Multifrequency radio observations of the radio galaxy 3C459 using MERLIN, VLA and the EVN, and an optical HST image using the F702W filter are presented.
Baade, Baars, Barthel, Bremer, Bridle, Carvalho, Conway, Crawford, D. J. Saikia, Dallacasa, Davis, de Koff, de Vries, Eracleous, Fanti, Farrah, Garrington, Haslam, Heckman, Heckman, Hernquist, Ishwara-Chandra, Ishwara-Chandra, Krause, Krause, Laing, Liu, Mantovani, McCarthy, Miller, Morganti, Morganti, O'Dea, O'Dea, Owen, P. Thomasson, Pedelty, Quinn, Saikia, Saikia, Saikia, Saikia, Saikia, Schilizzi, Simard-Normandin, Spinrad, T. W. B. Muxlow, Tadhunter, Thomasson, Toomre, Ulvestad, Yee   +51 more
core   +2 more sources

Usage of the term provenance in LIS literature: An Annual Review of Information Science and Technology (ARIST) paper

Journal of the Association for Information Science and Technology, EarlyView.
Abstract Provenance is the story of how something has come to be. In this paper, we provide a systematic literature review to categorize the various notions of provenance in Information Sciences. The goal of this review is to paint a broader picture of the multiple uses of provenance at play and to enhance our understanding of the importance of ...
Rhiannon Bettivia, Yi‐Yun Cheng, Michael R. Gryk   +2 more
wiley   +1 more source

Episodic Feedback in Triple Active Galactic Nucleus Candidate SDSS J0849+1114 Revealed by Extended Ionized Gas

The Astrophysical Journal
Galaxy mergers funnel gas toward the nuclei, igniting starbursts and active galactic nuclei (AGNs). The AGN feedback can reshape the host galaxy and regulate both star formation and supermassive black hole accretion.
Xiaoyu Xu, Meicun Hou, Zhiyuan Li, Sijia Peng, Zhao Su, Zongnan Li, Fuyan Bian, Junfeng Wang   +7 more
doaj   +1 more source

A CATALOG OF BRIGHT STAR CLUSTERS IN THE INTERACTING GALAXY M51 [PDF]

, 2007
We present a catalog of star clusters with VF555W < 23 mag detected in the interacting spiral galaxy M51 system based on mosaic images taken with the Hubble Space Telescope Advanced Camera for Surveys by the Hubble Heritage Team.
N. Hwang, M. Lee
semanticscholar   +1 more source

The frequency and properties of young tidal dwarf galaxies in nearby gas-rich groups

, 2016
We present high-resolution Giant Metrewave Radio Telescope (GMRT) HI observations and deep Canada-France-Hawaii Telescope (CFHT) optical imaging of two galaxy groups: NGC 4725/47 and NGC 3166/9.
Cannon, J., Chandra, P., Cuillandre, J. -C., Giovanelli, R., Haynes, M. P., Lee-Waddell, K., Patra, N., Sick, J., Spekkens, K., Stierwalt, S., Wang, J.   +10 more
core   +2 more sources