Journal ArticleDOI
Interstellar extinction from infrared to X-rays: An overview
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In this article, a unified picture from the infrared (λ=104 nm or 10 μm) to the X-rays (E=1.25 nm and 10 keV) is presented as a cross-section normalized per hydrogen atom.Abstract:
Interstellar extinction is presented in a unified picture from the infrared (λ=104 nm or 10 μm) to the X-rays (E=1.25 nm or 10 keV), as a cross-section normalized per hydrogen atom. Analytical expressions for the cross-section covering the whole range are cited or given in the Appendix for computational purposes.read more
Citations
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High-Energy Processes in Young Stellar Objects
TL;DR: In the early stages of the evolution of low-mass stars, from protostars through the zero-age main sequence, magnetic reconnection flares are seen in the X-ray and radio bands.
Journal ArticleDOI
The stellar activity-rotation relationship and the evolution of stellar dynamos
TL;DR: In this article, a sample of 824 solar and late-type stars with X-ray luminosities and rotation periods was used to study the relationship between rotation and stellar activity and derive a new estimate of the convective turnover time.
Journal ArticleDOI
Determination of the gas-to-dust ratio in nearby dense clouds using X-ray absorption measurements
TL;DR: In this article, a comparison of the gas and dust properties of the dense interstellar matter in six nearby star forming regions (d 2) than the galactic value, derived using the standard extinction curve (RV = 3:1), is presented.
Journal ArticleDOI
Global x-ray properties of the orion nebula region
Eric D. Feigelson,Konstantin V. Getman,Leisa K. Townsley,Gordon P. Garmire,Thomas Preibisch,Nicolas Grosso,Thierry Montmerle,Augustus Muench,Mark J. McCaughrean +8 more
TL;DR: Based on the Chandra Orion Ultradeep Project (COUP) observation, Wang et al. as mentioned in this paper established the global X-ray properties of the stellar population associated with the Orion Nebula.
Journal ArticleDOI
Near-Infrared Imaging Survey of Bok Globules: Density Structure
Ryo Kandori,Yasushi Nakajima,Motohide Tamura,Ken'ichi Tatematsu,Yuri Aikawa,Takahiro Naoi,Takahiro Naoi,Koji Sugitani,Hidehiko Nakaya,Takahiro Nagayama,Tetsuya Nagata,Mikio Kurita,Daisuke Kato,Chie Nagashima,Shuji Sato +14 more
TL;DR: In this article, the authors derived the visual extinction distribution toward 10 Bok globules through measurements of both the color excess (EH-K) and the stellar density at J, H, and Ks (star count).
References
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Journal ArticleDOI
The relationship between infrared, optical, and ultraviolet extinction
TL;DR: In this article, the average extinction law over the 3.5 micron to 0.125 wavelength range was derived for both diffuse and dense regions of the interstellar medium. And the validity of the law over a large wavelength interval suggests that the processes which modify the sizes and compositions of grains are stochastic in nature.
Journal ArticleDOI
Optical properties of interstellar graphite and silicate grains
Bruce T. Draine,Hyung Mok Lee +1 more
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A survey of interstellar H I from L-alpha absorption measurements. II
TL;DR: The Copernicus satellite surveyed the spectral region near L alpha to obtain column densities of interstellar HI toward 100 stars as discussed by the authors, and the value of the mean ratio of total neutral hydrogen to color excess was found to equal 5.8 x 10 to the 21st power atoms per (sq cm x mag).
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The interstellar extinction law from 1 to 13 microns.
Journal ArticleDOI
Interstellar photoelectric absorption cross-sections, 0.03-10 keV
R. Morrison,Dan McCammon +1 more
TL;DR: An effective absorption cross section per hydrogen atom has been calculated as a function of energy in the 0.03-10 keV range using the most recent atomic cross section and cosmic abundance data.