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Interstellar medium is the space between the stars. The interstellar medium is composed of gas (predominantly hydrogen and helium) and dust. Such interstellar matter makes up approximately 15% of the visible matter in our galaxy.
A magnetic halo featuring coherent magnetized ridges several kiloparsecs above and below the Galactic Disk, and a gamma-ray counterpart, are revealed. They probably arise from outflows that are driven by star-forming regions in the Galactic Disk, 3–5 kiloparsecs from the Galactic Centre.
A magnetic galactic halo featuring coherent ridges several kiloparsecs above and below the Galactic Disk has been detected in multi-wavelength observations. The halo is probably a consequence of outflows driven by active star-forming regions in the disk.
A deep map of the diffuse gas surrounding a nearby galaxy reveals changes in the physical conditions: a mark of the boundary between the edge of the galaxy and the onset of the circumgalactic medium, the dominant reservoir of normal matter.
Type Ic supernovae (SNe) originate either from the core collapse of very massive stars or from less massive stars in binary systems. Here, the authors show that progenitors of Type II and Ic SNe have comparable lifetimes and initial masses, which supports binary interaction for most Type Ic SNe progenitors.
Supermassive black holes regulate the amount of atomic hydrogen in galaxies and the atomic hydrogen gas mass to stellar masses ratio is more strongly correlated with black hole masses.
How a star cluster manages to produce γ-rays at a location 30 light yr away from itself is a mystery that can be solved by carefully testing theories about how charged particles travel through space.
Sulfur allotropes are proposed to be an important sulfur reservoir in molecular clouds, but spectroscopic data to test this hypothesis are limited. Here the authors measure laboratory far-infrared spectra of cold isolated S8 molecules, which show a near-perfect match with calculations, and examine their fragmentation pathways.
A magnetic halo featuring coherent magnetized ridges several kiloparsecs above and below the Galactic Disk, and a gamma-ray counterpart, are revealed. They probably arise from outflows that are driven by star-forming regions in the Galactic Disk, 3–5 kiloparsecs from the Galactic Centre.
Adam Carnall’s BAGPIPES code grew out of necessity and has since developed into a widely used tool for fitting the spectra and photometry of galaxies, especially in the JWST era.
Analysis of archival XMM-Newton data yields measurements of stellar wind emission from three star systems, illustrating a direct method to determine the mass-loss rates of late-type main-sequence stars.
