Articles with "column density" as a keyword



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Io's SO2 atmosphere from HST Lyman-α images: 1997 to 2018

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Published in 2020 at "Icarus"

DOI: 10.1016/j.icarus.2020.114212

Abstract: Abstract The atmosphere of Jupiter's volcanic moon Io consists of mainly sulfur dioxide (SO2), and this main constituent has been studied with a variety of observing techniques across many wavelengths over the years. Here we… read more here.

Keywords: 1997 2018; so2 column; column; so2 ... See more keywords
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Multi-wavelength campaign on NGC 7469 - II. Column densities and variability in the X-ray spectrum

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Published in 2018 at "Astronomy and Astrophysics"

DOI: 10.1051/0004-6361/201731655

Abstract: We have investigated the ionic column density variability of the ionized outflows associated with NGC 7469, to estimate their location and power. This could allow a better understanding of galactic feedback of AGNs to their… read more here.

Keywords: column densities; column; variability; ngc 7469 ... See more keywords
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A diagnostic to measure time-resolved atom column density and Doppler temperature in atomic vapors produced by laser ablation

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Published in 2023 at "Review of Scientific Instruments"

DOI: 10.1063/5.0141592

Abstract: We report on the development of a diagnostic to measure the time-resolved column density and Doppler temperature of atomic vapors produced by laser ablation. The diagnostic is based on the strong frequency dependence of the… read more here.

Keywords: column density; doppler temperature; temperature atomic; time ... See more keywords
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CO-to-H2 conversion and spectral column density in molecular clouds: the variability of the XCO factor

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Published in 2020 at "Monthly Notices of the Royal Astronomical Society"

DOI: 10.1093/mnras/staa2056

Abstract: Analyzing the Galactic plane CO survey with the Nobeyama 45-m telescope, we compared the spectral column density (SCD) of H$_2$ calculated for $^{12}$CO line using the current conversion factor $X_{\rm CO}$ to that for $^{13}$CO… read more here.

Keywords: molecular clouds; conversion; density; column density ... See more keywords
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The evolution of the low-density H i intergalactic medium from z = 3.6 to 0: Data, transmitted flux and H i column density*†‡

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Published in 2020 at "Monthly Notices of the Royal Astronomical Society"

DOI: 10.1093/mnras/staa3844

Abstract: We present a new, uniform analysis of the HI transmitted flux (F) and HI column density (N(HI)) distribution in the low-density IGM as a function of redshift z for 0 read more here.

Keywords: density; low density; flux column; column density ... See more keywords
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On the shape and completeness of the column density probability distribution function of molecular clouds

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Published in 2018 at "Monthly Notices of the Royal Astronomical Society"

DOI: 10.1093/mnras/sty3071

Abstract: Bastian Kortgen and Robi Banerjee acknowledge funding from the German Science Foundation (DFG) within the Priority Programm ‘The Physics of the ISM’ (SPP 1573) via the grant BA 3706/3-2. RB further acknowledges funding for this… read more here.

Keywords: completeness column; density probability; probability distribution; column density ... See more keywords