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The hot interstellar medium traces the stellar feedback and its role in regulating the eco-system of the Galaxy. I review recent progress in understanding the medium, based largely on X-ray absorption...
Confronting feedback simulations with observations of hot gas in elliptical galaxies
X-ray elliptical galaxies hot gas galaxy evolution
2014/12/23
Elliptical galaxies comprise primarily old stars, which collectively generate a long-lasting feedback via stellar mass-loss and Type Ia SNe. This feedback can be traced by X-ray-emitting hot gas in an...
We demonstrate that the feedback from stellar bulges can, in principle, play an essential role in shaping the halo gas of galaxies with substantial bulge components by conducting 1D hydrodynamical sim...
Galaxies in a simulated Lambda CDM Universe - I. Cold mode and hot cores
cooling fl ows feedback cluster
2014/12/23
We study the formation of galaxies in a large volume (50 h−1 Mpc, 2 × 2883 particles) cosmological simulation, evolved using the entropy and energy-conserving smoothed particle hydrodynamics (SP...
THE DEARTH OF CHEMICALLY ENRICHED WARM-HOT CIRCUMGALACTIC GAS
X-ray absorption lines galaxy
2014/12/22
The circumgalactic medium (CGM) around galaxies is believed to record various forms of galaxy feedback and contain a significant portion of the "missing baryons" of individual dark matter halos. Howev...
Missing-iron problem and Type Ia supernova enrichment of hot gas in galactic spheroids
hot gas galactic spheroids
2014/12/22
Type Ia supernovae (Ia SNe) provide a rich source of iron for hot gas in galactic stellar spheroids. However, the expected supersolar iron abundance of the hot gas is not observed. Instead, X-ray obse...
X-Ray Spectroscopy of Galactic Hot Gas along the PKS 2155$-$304 Sight Line,
X-Ray Spectroscopy
2014/12/20
We present a detailed spectroscopic study of the hot gas in the Galactic halo toward the direction of a blazer PKS 2155304 ( 0.117). The OVII and OVIII absorption lines were measured with the Low and ...
amounts of erupting lava are connected to the destruction of supercontinents and dramatic changes in climate and ecosystems.
New research from UC Davis and Aarhus University in Denmark shows that hig...
New research from UC Davis and Aarhus University in Denmark shows that high mantle temperatures miles beneath the Earth’s surface are essential for generating such large amounts of magma. In fact, the...
Goldilocks principle wrong for particle assembly: Too hot and too cold is just right（图）
cold right particle
2014/12/1
Microscopic particles that bind under low temperatures will melt as temperatures rise to moderate levels, but re-connect under hotter conditions, a team of New York University scientists has found. Th...
Goldilocks principle wrong for particle assembly: Too hot and too cold is just right
The particle assembly Microscopic particles
2014/10/30
Microscopic particles that bind under low temperatures will melt as temperatures rise to moderate levels, but re-connect under hotter conditions, a team of New York University scientists has found. Th...
Hot-spring bacteria reveal ability to use far-red light for photosynthesis（图）
far-red light photosynthesis
2014/8/26
20 August 2014 — Bacteria that grow in environments enriched in far-red light use a previously unknown process for harvesting energy. This discovery lays the foundation for further research aimed at i...
Hydrochemistry and isotopic characteristics of non-volcanic hot springs around the Miocene Kofu granitic complex surrounding the Kofu Basin in the South Fossa Magna region, central Honshu, Japan
Kofu granitic complex non-volcanic hot spring chemical property water–rock interaction δD·δ18O·δ34S value
2017/4/11
Chemical and stable isotopic compositions (δD, δ18O, and δ34S) of non-volcanic hot spring waters around the Miocene
Kofu granitic complex surrounding the Kofu basin in the South Fossa Magna region of...
Hot mantle drives elevation, volcanism along mid-ocean ridges
Hot mantle drives elevation volcanism along mid-ocean ridges
2014/4/16
By analyzing the speed of seismic waves generated by earthquakes, scientists have shown that temperature differences deep within Earth’s mantle control the elevation and volcanic activity along mid-o...
Although liquid water covers a majority of Earth's surface, scientists are still searching for planets outside our solar system that contain water. California Institute of Technology researchers have ...