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Variable interstellar absorption lines: a brief review
Astrophysics and Space Science, 2003I review the recent discoveries of variable interstellar absorption lines, widely taken to imply the existence of very small scale(10–100 AU) structure in the interstellar medium. Possible origins of this structure are discussed, and attention is drawn to the fact that most known examples seem to be associated with interstellar shells and bubbles of ...
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Absorption Lines from Intermediate-Latitude Interstellar Complexes
Publications of the Astronomical Society of the Pacific, 1966Recent observations of the 21 cm emission line of hydrogen ( Blaauw 1962) have revealed the existence of massive interstellar cloud complexes at considerable distances from the galactic plane. The region 126° < ln < 142°, -19° < bn < -7°, near the association I Persei, in particular, shows a high level of emission at velocities of -48 km/sec (feature ...
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On absorption by hot interstellar gas. II - The 5303-A forbidden line of Fe XIV
, 1984 L. M. Hobbs, C. E. Albert
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Interstellar Emission and Absorption Lines
2012Interstellar emission and absorption lines are discussed, including optical recombination lines, the 21cm hydrogen line, and broad lines such as the interstellar Lyman-alpha line. This chapter ends with a discussion of the curve of growth.
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Determination of distances to interstellar clouds using OH absorption lines
Astrophysics, 1984An attempt is made to determine distances to interstellar clouds by a method free of the limitations of the conventional method (using the galactic rotation curve). It is shown that the term delta, given by the square root of the ratio of the half width of the OH absorption lines to the antenna temperature, varies linearly with the distance R to the ...
I. G. Kolesnik, L. V. Yurevich
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Ultraviolet interstellar absorption lines from low-z galaxies
AIP Conference Proceedings, 1997The importance of studying absorption lines from z≪0.1 galaxies are discussed. The Mg II λλ2796 and 2803 A doublet absorption is sensitive to low column density gas and has been used to search for absorption lines from low-z galaxies. Recent studies of abundances and depletion patterns toward the Small Magellanic Cloud (Welty et al.
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Interstellar Absorption-Line Observations of the Magellanic Clouds
2008A brief overview of the interstellar absorption-line observations of the Magellanic clouds is given, with particular emphasis on the results obtained by the ESO Key-Program for the Magellanic Clouds. It is shown that high resolution interstellar observations towards bright MCs sources can probe the large scale distribution of the interstellar gas ...
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Rapid Temporal Variations of Interstellar Absorption Lines in the Carina Nebula
The Astrophysical Journal, 2001Two observations of the complex interstellar absorption-line profiles in the UV spectrum of CPD -59°2603, obtained 22 months apart in the R ~ 110,000 mode of the Space Telescope Imaging Spectrograph on the Hubble Space Telescope, reveal substantial variations in the intensities of several high-velocity components, including the virtual disappearance of
Anthony C. Danks +5 more
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INTERSTELLAR ABUNDANCES FROM ABSORPTION-LINE OBSERVATIONS WITH THE HUBBLE SPACE TELESCOPE
, 1996B. Savage, K. Sembach
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Hematology and oncology clinical care during the coronavirus disease 2019 pandemic
Ca-A Cancer Journal for Clinicians, 2020Manish A Shah +2 more
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