Results 91 to 100 of about 52,678 (266)

Thermotolerant class A acid phosphatase active across broad pH range and diverse substrates

Protein Science, Volume 34, Issue 9, September 2025.
Abstract M2‐32 is a non‐specific acid phosphatase with a rare ability to function across a broad pH range (3.5–8.5). Analysis using SWISS‐PROT Prf Profiles classifies it as a class A acid phosphatase (Z‐score: 78.97), sharing 50%–60% sequence similarity with enzymes such as PhoC and PhoN.
Maria‐Isabel Recio, José A. Gavira, Jesús de La Torre, Mario Cano‐Muñoz, Sergio Martínez‐Rodriguez, Abdelali Daddaoua, Estrella Duque, Juan L. Ramos   +7 more
wiley   +1 more source

Where Have All the Little Red Dots Gone? Supermassive Black Hole Binary Dynamics and Its Impact on Galaxy Properties

The Astrophysical Journal Letters
Recent James Webb Space Telescope observations have revealed a peculiar class of galaxies at redshifts z  ≳ 6, characterized by extremely high central stellar densities and overmassive central supermassive black holes (SMBHs), “little red dots” (LRDs). A
Fazeel Mahmood Khan, Benjamin L. Davis, Andrea Valerio Macciò, Kelly Holley-Bockelmann   +3 more
doaj   +1 more source

A Catalog of Photometric Redshift and the Distribution of Broad Galaxy Morphologies

Galaxies, 2018
We created a catalog of photometric redshift of ∼3,000,000 SDSS galaxies annotated by their broad morphology. The photometric redshift was optimized by testing and comparing several pattern recognition algorithms and variable selection strategies, and ...
Nicholas Paul, Nicholas Virag, Lior Shamir   +2 more
doaj   +1 more source

Kinematics of diffuse elliptical galaxies

Astrophysics and Space Science, 2003
To be published in "The Evolution of Galaxies. III. From Simple Approaches to Self-Consistent Models", G.
Francois Simien, Philippe Prugniel
openaire   +3 more sources

Mimicking Symmetry‐Breaking Einstein Ring by Optical Lens

Advanced Photonics Research, Volume 6, Issue 6, June 2025.
This article uses an optical lens to emulate the gravitational lensing effect and observe the Einstein ring (ER) patterns. The symmetry‐breaking ER, i.e., Einstein cross, is observed utilizing a rotation‐symmetry‐breaking hemi‐ellipsoid lens. Deformed Einstein cross patterns induced by noncollinearly alignment of the light source–lens–observer are ...
Jun‐Liang Duan, Wen Xiao, Minyong Guo, Tong Liu, Huanyang Chen, Jin‐Hui Chen   +5 more
wiley   +1 more source

Galactic Density and Evolution Based on the Virial Theorem, Energy Minimization, and Conservation of Angular Momentum

Galaxies, 2018
Spiral galaxies are spinning, internally densified objects. The Virial Theorem explains galactic rotation curves via its linkage of the rotation rate to the gravitational self-potential (Ug) and the moment of inertia of oblate spheroids.
Robert E. Criss, Anne M. Hofmeister
doaj   +1 more source

Hubble Space Telescope Imaging of the CFRS and LDSS Redshift Surveys---III. Field elliptical galaxies at 0.2 < z < 1.0

, 1999
Surface photometry has been performed on a sample of 46 field elliptical galaxies. These galaxies are described well by a deVaucouleurs R^{1/4} profile. The sample was selected from the combined Canada-France and LDSS redshift surveys and spans the range
Aragon-Salamanca, Barger, Barnes, Barrientos, Baugh, Bender, Bender, Bower, Brinchmann, Courteau, D. Crampton, David Schade, de Vaucouleurs, Dressler, Driver, Ellis, Ellis, Forbes, Franceschini, François Hammer, Guzman, Hammer, Hau, Im, Jarle Brinchmann, Jorgensen, K. Glazebrook, Kauffman, Kauffmann, Kauffmann, Kelson, L. Tresse, Larson, Le Fèvre, Lilly, Marzke, Matthew Colless, Menanteau, Mobasher, Negroponte, O. Le Fèvre, Pahre, Pahre, Patton, Press, R. Abraham, R. S. Ellis, S. J. Lilly, Scalo, Schade, Schade, Schade, Silva, Silva, Stanford, Tom Broadhurst, Totani, van der Kruit, van Dokkum, van Dokkum, White   +60 more
core   +2 more sources

Unveiling the Evolutionary Lineages and Habitat Dynamics of the Monotypic Crowned River Turtle Hardella thurjii (Gray, 1831) (Testudines: Geoemydidae): Strategic Conservation Insights for an Endangered Freshwater Turtle From Southern Asia

Ecology and Evolution, Volume 15, Issue 6, June 2025.
This study provides the first complete mitochondrial genome of the monotypic H. thurjii , sequenced using next‐generation technologies. Additionally, it employs ensemble species distribution modeling to evaluate habitat suitability and shape geometry under both current and projected climatic scenarios.
Imon Abedin, Arunima Singh, Jayaditya Purakayastha, Shailendra Singh, Kulendra Chandra Das, Hyun‐Woo Kim, Hye‐Eun Kang, Shantanu Kundu   +7 more
wiley   +1 more source

The Radio Wave Polarization of Saturn Lightning Observed by Cassini

Journal of Geophysical Research: Space Physics, Volume 130, Issue 6, June 2025.
Abstract We investigate the polarization of the radio waves emitted by lightning in Saturn's atmosphere, which are referred to as SEDs for Saturn Electrostatic Discharges. Using the complete SED data set retrieved by Cassini's RPWS (Radio and Plasma Wave Science) instrument we found that the circular polarization of SEDs below a frequency of 2 MHz ...
G. Fischer, M. Imai, U. Taubenschuss, D. Píša, W. S. Kurth   +4 more
wiley   +1 more source

Nuclear Activity and the Dynamics of Elliptical Galaxies

, 2004
This paper looks for any correlation between the internal dynamics of elliptical galaxies and the relatively mild nuclear activity found in many such systems.
Bender, Bender, Binney, Davies, Eracleous, Ho, Ho, Kauffmann, Kormendy, Kormendy, M. R. Merrifield, Naab, Prugniel, Prugniel   +13 more
core   +2 more sources