搜索结果: 1-15 共查到“天文学 Interstellar medium”相关记录15条 . 查询时间(0.046 秒)
X-Ray Absorption Line Spectroscopy of the Galactic Hot Interstellar Medium
Cyg X–2 V801 Ara
2014/12/24
We present an X-ray absorption line spectroscopic study of the large-scale hot interstellar medium (HISM) in the Galaxy. We detect Ne IX Kα absorption lines in the Chandra grating spectra of seven Gal...
X-Ray Absorption Spectroscopy of the Multiphase Interstellar Medium: Oxygen and Neon Abundances
ISM 4U 1820–303
2014/12/24
X-ray absorption spectroscopy provides a powerful tool in determining the metal abundances in various phases of the interstellar medium (ISM). We present a case study of the sight line toward 4U 1820-...
Chandra Detection of Fe XVII in Absorption: Iron Abundance in the Hot Gaseous Interstellar Medium
4U 1820–303 abundances
2014/12/24
The iron depletion level and the gas-phase iron abundance in the hot (~106 K) interstellar medium (ISM) are critical to our understanding of its energy balance as well as the thermal sputtering, cooli...
SUPERNOVA REMNANTS AND THE INTERSTELLAR MEDIUM OF M83: IMAGING AND PHOTOMETRY WITH THE WIDE FIELD CAMERA 3 ON THE HUBBLE SPACE TELESCOPE
supernova star-forming galaxy M83
2014/12/20
We present Wide Field Camera 3 images taken with the Hubble Space Telescope within a single field in the southern grand design star-forming galaxy M83. Based on their size, morphology, and photometry ...
Turbulence in the interstellar medium
Many variables Spectral imaging Observation The interstellar medium. The star gas
2014/12/9
The multivariate technique of principal component analysis (PCA) is a powerful statistical tool with which to describe spectral line imaging observations of the molecular interstellar medium. In parti...
Fermi-LAT Observations of the Diffuse Gamma-Ray Emission: Implications for Cosmic Rays and the Interstellar Medium
Fermi-LAT Observations Diffuse Gamma-Ray Emission Implications Cosmic Rays the Interstellar Medium
2012/2/23
The gamma-ray sky >100 MeV is dominated by the diffuse emissions from interactions of cosmic rays with the interstellar gas and radiation fields of the Milky Way. Observations of these diffuse emissio...
Faint Extended OH Emission from the Local Interstellar Medium in the Direction l \approx 108\circ, b \approx 5\circ
OH Emission Local Interstellar Medium Cosmology and Extragalactic Astrophysics
2012/2/21
We have mapped faint 1667 OH line emission (TA \approx 20 - 40 mK in our \approx 30' beam) along many lines of sight in the Galaxy covering an area of \approx 4\circ \times 4\circ in the general direc...
Dust grain growth in the interstellar medium of galaxies at redshifts 4
Dust grain growth interstellar medium galaxies redshifts
2011/10/21
To discriminate between different dust formation processes is a key issue in order to understand its properties. We analysed six submillimeter galaxies at redshifts 4nd nine quasars at 5
Project Icarus: A Review of Local Interstellar Medium Properties of Relevance for Space Missions to the Nearest Stars
Project Icarus Local Interstellar Medium Properties
2011/1/10
I review those properties of the interstellar medium within 15 light-years of the Sun which will be relevant for the planning of future rapid ($v /ge 0.1c$) interstellar space missions to the nearest ...
The thermally-unstable warm neutral medium: key for modeling the interstellar medium
Galaxy Astrophysics (astro-ph.GA)
2011/1/6
We present 21-cm absorption measurements towards 12 radio continuum sources with previously identified thermally-unstable warm neutral medium (WNM). These observations were obtained with the Expanded ...
Interstellar Medium Interaction with Accreting and Ejecting Stars
Interstellar Medium Interaction Accreting Ejecting Stars
2009/6/16
Interstellar Medium Interaction with Accreting and Ejecting Stars。
Stellar ejecta and their interaction with the the interstellar medium
Stellar ejecta interaction interstellar medium
2009/6/5
Stellar ejecta and their interaction with the the interstellar medium
Vertical shear of the galactic interstellar medium。
Turbulent dissipation in the interstellar medium：implications for galaxy formation and evolution
interstellar medium Massively-Parallel galaxy formation
2009/6/4
We describe ZEUS-MP: a Multi-Physics, Massively-Parallel, Message-Passingcode for astrophysical .uid dynamics simulations in 3 dimensions. ZEUS-MP is afollow-on to the sequential ZEUS-2D and ZEUS-3D c...
The Sun's journey through the local interstellar medium: the paleoLISM and paleoheliosphere
Sun's journey paleoheliosphere local interstellar medium
2009/5/27
Over the recent past, the galactic environment of the Sun has differed substantially from today. Sometime within the past ~130 000 years, and possibly as recent as ~56 000 years ago, the Sun entered t...