The interstellar and circumnuclear medium of active nuclei traced by H i 21 cm absorption [PDF]
The Astronomy and Astrophysics Review, 2018 This review summarises what we have learnt in the last two decades based on H i 21 cm absorption observations about the cold interstellar medium (ISM) in the central regions of active galaxies and about the interplay between this gas and the active ...
R. Morganti, T. Oosterloo
semanticscholar +1 more source
Low temperature MIR to submillimeter mass absorption coefficient of interstellar dust analogues [PDF]
Astronomy & Astrophysics, 2017 A wealth of data from the Herschel and Planck satellites and now from ALMA, revealing cold dust thermal emission, is available for astronomical environments ranging from interstellar clouds, cold clumps, circumstellar envelops, and protoplanetary disks ...
K. Demyk +13 more
semanticscholar +1 more source
Frontiers in Astronomy and Space Sciences, 2023 Combined in situ observations of the interstellar wind through the solar system and of its pickup ions (PUIs), implanted after ionization in the solar wind, explain, in comparison with interstellar absorption lines of nearby stars, that the Sun is in an ...
Eberhard Möbius
doaj +1 more source
Presumed Detection of C5 Molecule in the Interstellar Medium
The Astrophysical Journal, 2022 The paper suggests the presence of the carbon chain C _5 molecule in translucent, interstellar H i clouds. This species, the only five atom interstellar molecule, observable in dark, translucent clouds, seems to be observable in reasonably dense clouds ...
J. Krełowski, R. Hakalla, W. Szajna
doaj +1 more source
Early-type stars observed in the ESO UVES Paranal Observatory Project - V. Time-variable interstellar absorption [PDF]
, 2015 The structure and properties of the diffuse interstellar medium (ISM) on small scales, sub-au to 1 pc, are poorly understood. We compare interstellar absorption-lines, observed towards a selection of O- and B-type stars at two or more epochs, to search ...
C. M. McEvoy +8 more
semanticscholar +1 more source
Monthly Notices of the Royal Astronomical Society, 1992 Sarre P J, Scarrott S M, P J Sarre
exaly +2 more sources
Absorption and scattering by interstellar dust in the silicon K-edge of GX 5-1 [PDF]
, 2016 Context. We study the absorption and scattering of X-ray radiation by interstellar dust particles, which allows us to access the physical and chemical properties of dust. The interstellar dust composition is not well understood, especially on the densest
S. Zeegers +14 more
semanticscholar +1 more source
Oxygen, neon, and iron X-ray absorption in the local interstellar medium [PDF]
, 2016 We present a detailed study of X-ray absorption in the local interstellar medium by analyzing the X-ray spectra of 24 galactic sources obtained with the Chandra High Energy Transmission Grating Spectrometer and the XMM-Newton Reflection Grating ...
E. Gatuzz +3 more
semanticscholar +1 more source
PROBING X-RAY ABSORPTION AND OPTICAL EXTINCTION IN THE INTERSTELLAR MEDIUM USING CHANDRA OBSERVATIONS OF SUPERNOVA REMNANTS [PDF]
, 2015 We present a comprehensive study of interstellar X-ray extinction using the extensive Chandra supernova remnant (SNR) archive and use our results to refine the empirical relation between the hydrogen column density and optical extinction. In our analysis,
Dillon R. Foight +3 more
semanticscholar +1 more source
Calcium H & K and sodium D absorption induced by the interstellar and circumgalactic media of the Milky Way [PDF]
, 2015 We map out calcium II & sodium I absorption (Fraunhofer H, K & D lines) induced by both the interstellar medium and the circumgalactic medium of the Milky Way.
M. Murga +3 more
semanticscholar +1 more source