Results 51 to 60 of about 49,102 (348)

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

Radio Diagnostics Of Galaxy Interactions [PDF]

Symposium - International Astronomical Union, 1999
The Hickson Compact Groups (Hickson 1982) are relatively isolated systems of galaxies with projected separations comparable to the diameters of the galaxies themselves and are an ideal laboratory for the study of the effects of interactions on the various properties of galaxies.
openaire   +1 more source

AEGIS: Enhancement of Dust-enshrouded Star Formation in Close Galaxy Pairs and Merging Galaxies up to z ~ 1

, 2007
Using data from the DEEP2 Galaxy Redshift Survey and HST/ACS imaging in the Extended Groth Strip, we select nearly 100 interacting galaxy systems including kinematic close pairs and morphologically identified merging galaxies.
Chiueh, Tzihong, Coil, Alison L., Conselice, Christopher J., Cooper, Michael C., Floc'h, Emeric Le, Guhathakurta, Puragra, Huang, J. -S., Koo, David C., Lin, Lihwai, Lotz, Jennifer, Noeske, Kai G., Phillips, Andrew C., Smith, H. A., Weiner, Benjamin J., Willmer, Christopher N. A., Willner, S. P.   +15 more
core   +1 more source

Versatile Gasochromic Hydrogen Detection via Supraparticle‐Based Applied Composite Materials

Advanced Optical Materials, EarlyView.
Silica‐platinum‐resazurin supraparticles are embedded into PMMA to form suprabeads and thin films. The thereby obtained indicators change color from purple to pink to colorless on hydrogen exposure. The indicator systems are tested under various environmental conditions, and their performance is related to their microscopically visualized structure ...
Sarah Wenderoth, Maximilian Oppmann, Daniel Dzoic, Thomas Zimmermann, Mickaël Lejoyeux, Andreas Graff, Benedikt Schug, Susanne Wintzheimer   +7 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

Structural and Morphological Properties of Ultraluminous Infrared Galaxies at 1 < z < 3

Open Astronomy, 2015
Using the Hubble Space Telescope (HST)/Wide Field Camera 3 (WFC3) near-infrared high-resolution imaging from the 3D-HST survey, we analyze the morphology and structure of 502 ultraluminous infrared galaxies (ULIRGs; LIR > 1012L⊙) at 1 < z < 3. Their rest-
Fang Guanwen, Ma Zhongyang, Chen Yang, Kong Xu   +3 more
doaj   +1 more source

ChAInGeS: The Chandra Arp Interacting Galaxies Survey

, 2011
We have conducted a statistical analysis of the ultra-luminous X-ray point sources (ULXs; L(X) >= 10^39 erg/s) in a sample of galaxies selected from the Arp Atlas of Peculiar Galaxies.
Abazajian, Alonso-Herrero, Alonso-Herrero, Arp, Barton, Barton Gillespie, Begelman, Beverly J. Smith, Casosola, Colbert, Curtis Struck, de Vaucouleurs, Donzelli, Douglas A. Swartz, Duc, Duc, Ellison, Evans, Gao, Haan, Hancock, Imanishi, Jacob A. Burleson, Jester, Kennicutt, King, Kuntz, Lehmer, Liu, Liu, Liu, Liu, Lucero, Michael A. Nowak, Mirabel, Modica, Moretti, Moustakas, Moustakas, Mukai, Norris, Olivia Miller, Pakull, Pakull, Parma, Parra, Petric, Ptak, Ptak, Richards, Rothberg, Schlegel, Sekiguchi, Silverman, Smith, Smith, Smith, Smith, Smith, Stoughton, Struck, Surace, Swartz, Swartz, Swartz, Swartz, Tao, Tennant, Terashima, Veilleux, Werk, Xu, Zezas, Zhang, Zombeck   +74 more
core   +1 more source

A Proof‐of‐Concept Assessment of a Novel Wearable Eyelid Muscle Device: A Pre‐Clinical Animal Cadaver Study for Eyelid Closure Restoration

Advanced Robotics Research, EarlyView.
This article introduces a soft wearable eyelid sling device incorporating a hydraulic soft artificial muscle (SAM) for achieving complete closure of an eyelid. The SAM is driven by a cam mechanism that provides a displacement profile closely matched with those of a healthy eyelid.
Patrick Pruscino, Phuoc Thien Phan, James Davies, Bibhu Sharma, Tianruo Guo, Chi Cong Nguyen, Nigel H. Lovell, Thanh Nho Do   +7 more
wiley   +1 more source

Enhanced Star Formation and Black Hole Accretion Rates in Galaxy Mergers in IllustrisTNG50

The Astrophysical Journal
Many theoretical and observational studies have suggested that galaxy mergers may trigger enhanced star formation or active galactic nucleus activity.
Aimee L. Schechter, Shy Genel, Bryan Terrazas, Julia M. Comerford, Abigail Hartley, Rachel S. Somerville, Rebecca Nevin, Joseph Simon, Erica Nelson   +8 more
doaj   +1 more source

NNMT Orchestrates Metabolic‐Epigenetic Reprogramming to Drive Macrophage‐Myofibroblast Transition in Hypertrophic Scarring

Advanced Science, EarlyView.
In macrophage‐myofibroblast transition, upregulated NNMT depletes S‐Adenosylmethionine‌ (SAM) and nicotinamide adenine dinucleotide(NAD+), thereby triggering epigenetic reprogramming via Histone H3 Lysine 27 acetylation (H3K27ac) accumulation at the promoter region of master transcription factor Prrx1.
Xiwen Dong, Weinan Guo, Yuxuan Qian, Wenyan Jin, Xiaozhen Li, Jingyuan Yang, Qingrong Ni, Shuang Wu, Fanni Li, Hua Wang, Chunying Li, Hong Cai   +11 more
wiley   +1 more source