Results 1 to 10 of about 136,681 (287)

X‐Ray Absorption Line Spectroscopy of the Galactic Hot Interstellar Medium [PDF]

The Astrophysical Journal, 2005
This is the pre-published version harvested from ArXiv. The published version is located at http://iopscience.iop.org/0004-637X/624/2/751/
Yao, Y, Wang, QD
semanticscholar   +7 more sources

Detection of PAH Absorption and Determination of the Mid-infrared Diffuse Interstellar Extinction Curve from the Sight Line toward Cyg OB2-12 [PDF]

Astrophysical Journal, 2020
The sight line toward the luminous blue hypergiant Cyg OB2-12 is widely used to study interstellar dust on account of its large extinction (AV ≃ 10 mag) and the fact that this extinction appears to be dominated by dust typical of the diffuse interstellar
Brandon S. Hensley, B. T. Draine
openalex   +3 more sources

On interstellar Fe X forbidden line absorption toward Cepheus OB2

The Astrophysical Journal, 1984
A weak interstellar absorption line which can be identified as the forbidden line of Fe X 6375 A is observed in the spectrum of the A2 Ia star Nu Cep, which is a member of the Cepheus OB2 association. The equivalent width, width, and radial velocity of the line differ indistinguishably from those of similar absorption previously detected uniquely ...
L. M. Hobbs
semanticscholar   +3 more sources

Interstellar Gas-phase Element Depletions in the Small Magellanic Cloud: A Guide to Correcting for Dust in QSO Absorption Line Systems^∗ [PDF]

, 2017
We present data on the gas-phase abundances for 9 different elements in the interstellar medium of the Small Magellanic Cloud (SMC), based on the strengths of ultraviolet absorption features over relevant velocities in the spectra of 18 stars within the ...
E. B. Jenkins, George Wallerstein
openalex   +3 more sources

Distance Determinations from 21 cm Interstellar Absorption-line Measurements [PDF]

Symposium - International Astronomical Union, 1983
HI observations at 21 cm have been made with the Westerbork Synthesis Radio Telescope in the direction of six planetary nebulae located in or near the galactic plane (N 7027, 2440, 6537, 6572, 7026, 7354).
S. R. Pottasch, R. Gathier, W. M. Goss
openaire   +2 more sources

Strong absorption by interstellar hydrogen fluoride:Herschel/HIFI observations of the sight-line to G10.6–0.4 (W31C) [PDF]

, 2010
We report the detection of strong absorption by interstellar hydrogen fluoride along the sight-line to the submillimeter continuum source G10.6-0.4 (W31C).
David A. Neufeld, Paule Sonnentrucker, T. G. Phillips, D. C. Lis, M. De Luca, J. R. Goicoechea, J. H. Black, Maryvonne Gérin, T. A. Bell, F. Boulanger, J. Cernicharo, A. Coutens, E. Dartois, Marzena Kaźmierczak, P. Encrenaz, É. Falgarone, T. R. Geballe, Thomas F. Giesen, B. Godard, P. F. Goldsmith, C. Gry, H. M. Sen Gupta, P. Hennebelle, Eric Herbst, P. Hily-Blant, C. Joblin, Robert Kołos, J. Krełowski, J. Martín‐Pintado, K. M. Menten, Raquel Rodriguez Monje, B. Mookerjea, John C. Pearson, M. Pérault, C. M. Persson, R. Plume, M. Salez, Stephan Śchlemmer, M. Schmidt, J. Stutzki, D. Teyssier, C. Vastel, Shanshan Yu, Ph. Caïs, E. Caux, R. Liseau, P. Morris, P. Planesas   +47 more
openalex   +3 more sources

Unusual X-Ray Oxygen Line Ratios of SN 1987A Arising from the Absorption of Galactic Hot Interstellar Medium [PDF]

The Astrophysical Journal
Recent high-resolution X-ray spectroscopic studies have revealed unusual oxygen line ratios, such as the high O vii forbidden-to-resonance ratio, in several supernova remnants. While the physical origin is still under debate, for most of them it has been
Lei Sun, Salvatore Orlando, Emanuele Greco, Marco Miceli, Yiping Li, Yang Chen, Jacco Vink, Ping Zhou   +7 more
doaj   +3 more sources

XMM–Newton/Reflection Grating Spectrometer detection of the missing interstellar O vii Kα absorption line in the spectrum of Cyg X-2 [PDF]

, 2013
The hot interstellar medium is an important part of the Galactic ecosystem and can be effectively characterized through X-ray absorption line spectroscopy. However, in a study of the hot medium using the accreting neutron star X-ray binary, Cyg X-2, as a
Samuel H. C. Cabot, Q. Daniel Wang, Yangsen Yao   +2 more
openalex   +3 more sources

INTERSTELLAR H I AND H₂IN THE MAGELLANIC CLOUDS: AN EXPANDED SAMPLE BASED ON ULTRAVIOLET ABSORPTION-LINE DATA [PDF]

, 2012
We have determined column densities of H i and/or H2 for sight lines in the Magellanic Clouds from archival Hubble Space Telescope and Far-Ultraviolet Spectroscopic Explorer spectra of H i Lyα and H2 Lyman-band absorption. Together with some similar data
D. E. Welty, Rui Xue, Tony Wong
openalex   +3 more sources

Line Absorption Studies of the Interstellar Gas Near 10¹⁵ Hz [PDF]

Symposium - International Astronomical Union, 1974
The Copernicus satellite now opens up the ultraviolet region for inspection, and the number of resonance lines which may be studied has increased from 6, seen in the visible, to more than 30. The distribution and properties of an important constituent of the interstellar gas, molecular hydrogen, can be studied in detail using this instrument.
E. B. Jenkins
openaire   +2 more sources