Results 61 to 70 of about 1,520 (178)
Why Are (Almost) All the Protostellar Outflows Aligned in Serpens Main?
The Astrophysical JournalWe present deep 1.4–4.8 μ m JWST-NIRCam imaging of the Serpens Main star-forming region and identify 20 candidate protostellar outflows, most with bipolar structure and identified driving sources. The outflow position angles (PAs) are strongly correlated,
Joel D. Green +6 more
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Hidden metallic iron in amorphous silicate dust?
Astronomy & AstrophysicsContext. Amorphous silicate dust is a major component in the interstellar and circumstellar dust formed in the outflow of asymptotic giant branch (AGB) stars.
Enomoto H. +3 more
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Natural SciencesPolycyclic aromatic hydrocarbons (PAHs) are considered major players in the physics and chemistry of star‐ and planet‐forming regions. The interstellar PAH hypothesis is based on our understanding of the origin of the aromatic infrared bands (AIBs), a ...
Hassan Sabbah +3 more
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Ultraviolet Background Radiation from Not-So-Dark Matter in the Galactic Halo
UniverseMurthy et al. (2025) (hereafter Paper I) have recently reported the discovery of unexpectedly bright diffuse extreme-ultraviolet radiation at high latitudes in both the Northern and Southern Galactic Hemispheres.
Richard Conn Henry +2 more
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Stellar Photometry at the Crossroads of the Two Centuries
Open Astronomy, 2003 In the last century photometry was recognized as a powerful method for investigation of physical parameters of stars and of interstellar matter. Photometric investigations now cover the spectral range from the far ultraviolet to the far infrared.
Straižys V.
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The Barium Star HD204075: Iron Abundance and the Absence of Evidence for Accretion
Journal of Astronomy and Space Sciences, 2019 Spectroscopic observations of barium star ζ Capricornus (HD204075) obtained at the 8.2 m telescope of the European Southern Observatory, with a spectral resolving power R = 80,000 and signal to noise ratio greater than 300, were used to refine the ...
Yeuncheol Jeong +2 more
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EPJ Web of Conferences, 2016 We use the recent measurement of the isotropic γ–ray background (IGRB) by Fermi LAT and analysis of the contribution of unresolved point γ–ray sources to IGRB to build constraints on the models of ultra-high cosmic rays (UHECR) origin.
Kalashev Oleg
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The Astrophysical JournalWe characterize stellar, gas, and dark matter mass distributions for 17 nearby massive disk galaxies from the PHANGS sample. This allows us to compute the gravitational potential that vertically confines the interstellar gas and determines its ...
Vivek Vijayakumar +7 more
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Manufacturing and Test Results of Off-Axis Parabolic Cylinder Mirror for FIMS [PDF]
Journal of Astronomy and Space Sciences, 2001 Far-ultraviolet IMaging Spectrograph (FIMS) is the main payload of the first Korean scientific satellite, KAISTSAT-4, which will be launched in 2002. Among the optical parts, parabolic cylinder mirror does not have any heritage from previous astronomical
K.-S. Ryu +15 more
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Origin of the Strong Sodium Absorption of the Lensed Supernova 2016geu at z = 0.4
The Astrophysical JournalThe origin of strong sodium absorption, which has been observed for a few nearby Type Ia supernovae (SNe Ia), remains elusive. Here we analyze two high-signal-to-noise, intermediate-resolution Very Large Telescope/X-shooter spectra at epochs +18 and +27 ...
Christa Gall +9 more
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