Results 81 to 90 of about 37,027 (256)
Physics Letters B, 2020 Photons may convert to axion-like particles (ALPs) in external magnetic fields. Under certain conditions, this effect should result in irregular features in observed spectra of astrophysical sources.
Maxim Libanov, Sergey Troitsky
doaj +1 more source
The Local Group Census: planetary nebulae in Sextans B
, 2002 Five planetary nebulae (PNe) have been discovered in the nearby dwarf irregular galaxy. Emission line images were obtained using the Wide Field Camera of the 2.5m Isaac Newton Telescope (INT) at La Palma (Spain).
A. A. Zijlstra +33 more
core +1 more source
Stellar population of the irregular galaxy IC 10 [PDF]
Astronomy Letters, 2009 Based on our observations with the 6-m BTA telescope at the Special Astrophysical Observatory, the Russian Academy of Sciences, and archival Hubble Space Telescope images, we have performed stellar photometry for several regions of the irregular galaxy IC 10, a member of the Local Group.
Tikhonov, N. A., Galazutdinova, O. A.
openaire +2 more sources
Weaponising the Supply Chain: Yemen's Blockade and the Contradictions of Maritime Logistics Capital
Antipode, Volume 58, Issue 1, January 2026.Abstract This paper examines the 2023–2025 naval blockade imposed by Yemen in the Red Sea. It argues that the blockade's success in disrupting global trade stemmed from the potent confluence of asymmetric military tactics and the structural vulnerabilities inherent within global maritime logistics capitalism.
Ashok Kumar
wiley +1 more source
Star Formation in the Lopsided Galaxy Arp 291
The Astrophysical JournalWe have investigated the star formation process taking place in the lopsided galaxy Arp 291, based on narrowband images in the H α , [N ii ] λ 6583, and [O iii ] λ 5007 emission lines, obtained using the modern tunable photometer MaNGaL at the Caucasus ...
Irina S. Proshina, Dmitriy V. Oparin
doaj +1 more source
The JWST Hubble Sequence: The Rest-frame Optical Evolution of Galaxy Structure at 1.5 < z < 6.5
The Astrophysical Journal, 2023 We present results on the morphological and structural evolution of a total of 3956 galaxies observed with JWST at 1.5 < z < 6.5 in the JWST CEERS observations that overlap with the CANDELS EGS field.
Leonardo Ferreira +15 more
doaj +1 more source
Galaxy Evolution in Local Group Analogs. I. A GALEX study of nearby groups
, 2009 Understanding the astrophysical processes acting within galaxy groups and their effects on the evolution of the galaxy population is one of the crucial topic of modern cosmology, as almost 60% of galaxies in the Local Universe are found in groups.
Bettoni, D. +4 more
core +1 more source
The Stellar Content of 10 Dwarf Irregular Galaxies [PDF]
The Astronomical Journal, 1998 We examine the stellar content of 10 dwarf irregular galaxies of which broad-band CCD photometry was published in Hopp & Schulte-Ladbeck (1995). We also present Halpha images for several of these galaxies. The galaxies in the sample are located outside of the Local Group.
Schulte-Ladbeck, Regina E., Hopp, Ulrich
openaire +2 more sources
Tropospheric Propagation Effects Extracted From ADS‐B Messages
Engineering Reports, Volume 7, Issue 12, December 2025.This study explores the use of ADS‐B messages to estimate tropospheric effects, effectively isolating atmospheric influences from interference. The approach enables independent lower atmosphere studies and offers a cost‐free supplementary method for satellite applications, benefiting GNSS systems, especially at low elevation angles where multipath and ...
Alina‐Mihaela Badescu
wiley +1 more source
Deep griz GMOS Imaging of the Dwarf Irregular Galaxy Kar 50
, 2002 Images obtained with the Gemini Multi-Object Spectrograph (GMOS) are used to investigate the stellar content and distance of the dwarf irregular galaxy Kar 50.
Binggeli B. +3 more
core +1 more source