Results 81 to 90 of about 49,102 (348)

THE METALLICITY EVOLUTION OF INTERACTING GALAXIES [PDF]

The Astrophysical Journal, 2012
Nuclear inflows of metal-poor interstellar gas triggered by galaxy interactions can account for the systematically lower central oxygen abundances observed in local interacting galaxies. Here, we investigate the metallicity evolution of a large set of simulations of colliding galaxies.
Torrey, Paul, Cox, T J, Kewley, Lisa, Hernquist, Lars   +3 more
openaire   +3 more sources

Substituent‐Based Modulation of Self‐Assembly and Immunogenicity of Amphipathic Peptides

Advanced Science, EarlyView.
This study systematically investigates how positional and subtle changes, such as substituents on the phenyl ring attached to short amphipathic peptides, influence their self‐assembly, fibril morphology, and immunogenic responses. ABSTRACT Self‐assembled peptide‐based biomaterials provide versatile platforms for biomedical uses, featuring customizable ...
Anirban Das, Ushasi Pramanik, Elise M. Brown, Chih‐Yun Liu, Huan Gong, Jonathan Fascetti, Mark Gibson, Samuel Stealey, Silviya P. Zustiak, Cory Berkland, Piyoosh Sharma, Meredith E. Jackrel, Mark A. White, Jai S. Rudra   +13 more
wiley   +1 more source

A Fast Radio Burst in a Compact Galaxy Group at z ∼ 1

The Astrophysical Journal Letters
FRB 20220610A is a high-redshift fast radio burst (FRB) that has not been observed to repeat. Here, we present rest-frame UV and optical Hubble Space Telescope observations of the field of FRB 20220610A. The imaging reveals seven extended sources, one of
Alexa C. Gordon, Wen-fai Fong, Sunil Simha, Yuxin Dong, Charles D. Kilpatrick, Adam T. Deller, Stuart D. Ryder, Tarraneh Eftekhari, Marcin Glowacki, Lachlan Marnoch, August R. Muller, Anya E. Nugent, Antonella Palmese, J. Xavier Prochaska, Marc Rafelski, Ryan M. Shannon, Nicolas Tejos   +16 more
doaj   +1 more source

Galactic Center Excess in Gamma Rays from Annihilation of Self-Interacting Dark Matter

, 2015
Observations by the Fermi-LAT telescope have uncovered a significant $\gamma$-ray excess toward the Milky Way Galactic Center. There has been no detection of a similar signal in the direction of the Milky Way dwarf spheroidal galaxies.
Kaplinghat, Manoj, Linden, Tim, Yu, Hai-Bo   +2 more
core   +1 more source

Robust C–V Ratio Technique for Profiling Defects in Proton‐Irradiated 4H‐SiC

Advanced Electronic Materials, EarlyView.
A noise‐robust C–V ratio technique is introduced to profile radiation‐induced defects in proton‐irradiated 4H‐SiC Schottky diodes. By using analytical capacitance ratios instead of numerical differentiation, the method directly extracts trap‐density and effective trap‐energy profiles at room temperature.
Kibeom Kim, Sung Yun Woo, Jeong Hyun Moon, Young Jun Yoon, Jae Hwa Seo   +4 more
wiley   +1 more source

Self-Interacting Dark Matter and the Origin of Ultradiffuse Galaxies NGC1052-DF2 and -DF4 [PDF]

, 2020
Daneng Yang, Hai-Bo Yu, Haipeng An
openalex   +1 more source

Discovery and Initial Investigation of a New Low Surface Brightness Planetary Nebula Candidate at High Galactic Latitude

Astronomische Nachrichten, EarlyView.
ABSTRACT Planetary nebulae represent a late evolutionary phase of low‐ to intermediate‐mass stars. In this article, we present the serendipitous discovery of a previously unknown, faint potential Galactic planetary nebula (PN) in the constellation Camelopardalis, identified during a survey‐inspection, aiming at the detection of dwarf companions of the ...
W. E. Celnik, P. Köchling, S. Kotov, J. Kozok, Y. Galata, L. Magrini, A. Moiseev, M. Nischang, C. Reese, P. Remmel, P. Riepe, T. Zilch, K. Werner   +12 more
wiley   +1 more source

Galaxy Protoclusters as Drivers of Cosmic Reionization: I. Bubble Overlap at Redshift z ∼ 7 in LAGER-z7OD1

The Astrophysical Journal
Since the launch of JWST, the sample size of reionization-era Ly α emitters (LAEs) has been steadily growing; yet inferences about the neutral hydrogen fraction in the intergalactic medium exhibit increasing variance at redshift z ≈ 7, possibly ...
Crystal L. Martin, Weida Hu, Isak G. B. Wold, Andreas Faisst, Cristóbal Moya-Sierralta, Sangeeta Malhotra, James E. Rhoads, Luis Felipe Barrientos, Yuichi Harikane, Leopoldo Infante, Anton M. Koekemoer, Jorge Gonzalez Lopez, Masami Ouchi, Junyan Xu, Jiayang Yang, L. Y. Aaron Yung, John R. Weaver, Henry McCracken, Zhenya Zheng, Junxian Wang   +19 more
doaj   +1 more source

Modified theory of gravity and clustering of multi-component system of galaxies

European Physical Journal C: Particles and Fields, 2019
In this paper, we analyze the clustering of galaxies using a modified theory of gravity, in which the field content of general relativity has been be increased.
Mir Hameeda, Behnam Pourhassan, Mir Faizal, C. P. Masroor, Rizwan Ul Haq Ansari, P. K. Suresh   +5 more
doaj   +1 more source

Arp 70: an interacting galaxy with extreme outflows [PDF]

, 2020
A. Camps-Fariña, J. E. Beckman, Joan Font, Ignacio del Moral-Castro, S. F. Sánchez, Alejandro S. Borlaff   +5 more
openalex   +1 more source