Results 81 to 90 of about 603 (179)

A Search for Faint Resolved Galaxies Beyond the Milky Way in DES Year 6: A New Faint, Diffuse Dwarf Satellite of NGC 55

The Astrophysical Journal
We report results from a systematic wide-area search for faint dwarf galaxies at heliocentric distances from 0.3 to 2 Mpc using the full 6 yr of data from the Dark Energy Survey (DES).
M. McNanna, K. Bechtol, S. Mau, E. O. Nadler, J. Medoff, A. Drlica-Wagner, W. Cerny, D. Crnojević, B. Mutlu-Pakdıl, A. K. Vivas, A. B. Pace, J. L. Carlin, M. L. M. Collins, P. S. Ferguson, D. Martínez-Delgado, C. E. Martínez-Vázquez, N. E. D. Noel, A. H. Riley, D. J. Sand, A. Smercina, E. Tollerud, R. H. Wechsler, T. M. C. Abbott, M. Aguena, O. Alves, D. Bacon, C. R. Bom, D. Brooks, D. L. Burke, J. A. Carballo-Bello, A. Carnero Rosell, J. Carretero, L. N. da Costa, T. M. Davis, J. De Vicente, H. T. Diehl, P. Doel, I. Ferrero, J. Frieman, G. Giannini, D. Gruen, G. Gutierrez, R. A. Gruendl, S. R. Hinton, D. L. Hollowood, K. Honscheid, D. J. James, K. Kuehn, J. L. Marshall, J. Mena-Fernández, R. Miquel, M. E. S. Pereira, A. Pieres, A. A. Plazas Malagón, J. D. Sakowska, E. Sanchez, D. Sanchez Cid, B. Santiago, I. Sevilla-Noarbe, M. Smith, G. S. Stringfellow, E. Suchyta, M. E. C. Swanson, G. Tarle, N. Weaverdyck, P. Wiseman, DES & DELVE Collaboration   +66 more
doaj   +1 more source

Cosmic Radiation Dose‐Rates for Civil Aviation in the Middle East: Vertical Structure, Solar Modulation, and Comparison With Models

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 17, 16 September 2026.
Abstract High‐altitude balloon measurements were conducted over southern Israel (30°35′N, 34°45′E; 850 m a.s.l., geomagnetic rigidity cutoff 10.3 GV) to characterize the vertical profiles of atmospheric ionization and radiation up to ∼35 km. Six balloon launches between October 2014 and August 2016 recorded the variability of atmospheric ionization ...
Roy Yaniv, Yoav Yair, Colin Price
wiley   +1 more source

Systematically Measuring Ultradiffuse Galaxies. IX. A Gigayear in the Life of Nearby Low-surface-brightness Galaxies

The Astrophysical Journal
We augment the published optical photometry of ultradiffuse galaxy candidates in the SMUDGes catalog with UV and IR measurements to investigate the recent (
Dennis Zaritsky, Richard Donnerstein, Loraine Sandoval Ascencio, M. C. Cooper, Donghyeon J. Khim, Kristine Spekkens   +5 more
doaj   +1 more source

Bacterial Lysis Observation Over Time Assay (BLOTS) for High‐Throughput Isolation, Sequencing, and Characterization of Bacteriophages

Current Protocols, Volume 6, Issue 9, September 2026.
Abstract Phages remain severely under‐sampled, largely due to the limitations of current isolation methods, which are labor‐intensive, low‐throughput, and often restricted to a narrow set of bacterial hosts. To address this gap, we developed a robust and scalable field‐to‐genome workflow that leverages laboratory automation to screen environmental ...
Sean Jia Le Pang, Soon Keong Wee, Bobby Guo Wei Lee, Odelia Yap, Eric Peng Huat Yap   +4 more
wiley   +1 more source

Unveiling the Functional Role of KIF21B in Microglia Inflammatory Response

Glia, Volume 74, Issue 9, September 2026.
Microglia express KIF21B in both sexes. KIF21B binds to microglia cytoskeleton; inflammation alters such interaction promoting a phagocytic state in females. In male microglia KIF21B modulates migration. ABSTRACT Microglia are brain immune cells that maintain homeostasis and respond to injury, changing cell morphology to drive inflammation, migration ...
Danny Ganchala, Alvaro Bautista‐Abad, Daniel Pinto‐Benito, Julia Simon‐Areces, Daniela Grassi, Francesco Paolo Ulloa Severino, Maria‐Angeles Arevalo   +6 more
wiley   +1 more source

An H I Study of a Large Sample of Ultradiffuse Galaxies

The Astrophysical Journal
By crossmatching the Systematically Measuring Ultra-Diffuse Galaxies (SMUDGes) catalog with the FASHI and ALFALFA H i surveys, we construct an H i -detected sample of 112 ultradiffuse galaxies (UDGs) and 48 low-surface-brightness (LSB) galaxies ...
Ruilei Zhou, Ming Zhu, Chuan-Peng Zhang, Lin Du, Cheng Cheng, Qi Guo, Tian-Wen Cao, Wenzhe Xi   +7 more
doaj   +1 more source

How Invisible Stellar Halos Bias Our Understanding of Ultrafaint Galaxies

The Astrophysical Journal
We explore how a realistic surface brightness (SB) detection limit of μ _V ≈ 32.5 mag arcsec ^−2 for stars at the edges of ultrafaint galaxies affects our ability to infer their underlying properties.
Coral Wheeler, Jorge Moreno, M. Katy Rodriguez Wimberly, Francisco J. Mercado, James S. Bullock, Michael Boylan-Kolchin, Pratik J. Gandhi, Sarah R. Loebman, Philip F. Hopkins   +8 more
doaj   +1 more source

Identifying Dwarfs of MC Analog GalaxiEs (ID-MAGE): The Search for Satellites around Low-mass Hosts

The Astrophysical Journal
We present results from Identifying Dwarfs of MC Analog GalaxiEs (ID-MAGE), a survey aimed at identifying and characterizing unresolved satellite galaxies around 35 nearby LMC- and SMC-mass hosts ( D  = 4−10 Mpc).
Laura Congreve Hunter, Burçİn Mutlu-Pakdİl, David J. Sand, Paul Bennet, Donghyeon J. Khim, Denija Crnojević, Amandine Doliva-Dolinsky, Emmanuel Durodola, Catherine Fielder, Rowan Goebel-Bain, Michael G. Jones, Ananthan Karunakaran, Kristine Spekkens, Dennis Zaritsky   +13 more
doaj   +1 more source

Serendipitous discovery of an almost-dark galaxy in the Virgo Cluster

Astronomy & Astrophysics
Analogues of extreme Local Group galaxies with very low surface brightnesses and large effective radii must exist elsewhere, still hidden due to current detection limits.
Le Minh Ngoc, Trujillo Ignacio, Guerra Arencibia Sergio, Ruiz Cejudo Ignacio, Junais, Montes Mireia, Knapen Johan H., Ivezić Željko, Wilkinson Michael H. F., Peletier Reynier, Serra-Ricart Miquel, Alarcon Miguel R.   +11 more
doaj   +1 more source

Low surface brightness galaxies and their environments

, 2006
In der vorliegenden Dissertation wurde die Lage von Low Surface Brightness (LSB) Galaxien innerhalb der großskaligen Struktur untersucht. Dazu wurde der Sloan Digital Sky Survey herangezogen. Mit diesem Datensatz wurde die mittlere umgebende Galaxiendichte von LSBs innerhalb von Sphären mit einem Radius, der zwischen 0.8 und 8 Mpc variiert wurde ...
openaire   +5 more sources