Results 21 to 30 of about 3,884 (261)
Massive Stars in the Galactic Center [PDF]
Proceedings of the International Astronomical Union, 2007 AbstractWe present results of two studies aiming at better understanding the properties of massive stars in the Galactic Center. We focus on the youngest and oldest of the three massive clusters harboring this region, namely the Arches and central cluster.
Martins, F. +6 more
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Symposium - International Astronomical Union, 1984 Infrared studies of the interstellar medium in the central ten parsecs of the Milky Way are reviewed. Far infrared (30 – 150μm) photometry gives the density distribution of the dust: the material is confined chiefly to the plane of the Galaxy, and there is a central cavity of two parsecs radius within which the density is extremely low (Av ≪ 1 ...
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Are Supernovae Responsible for the Gamma Ray Spectrum from the Galactic Center?
Acta Polytechnica CTU Proceedings, 2014 We discuss the supernova remnants distribution as a function of the galactic longitude and compare their positions to that of the detected TeV gamma ray sources. A large fraction of these sources either coincide or a close by known supernova remnants. If
Todor Stanev
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Sources and Radiations of the Fermi Bubbles
UniverseTwo enigmatic gamma-ray features in the galactic central region, known as Fermi Bubbles (FBs), were found from Fermi-LAT data. An energy release, (e.g., by tidal disruption events in the Galactic Center, GC), generates a cavity with a shock that expands ...
Vladimir A. Dogiel, Chung-Ming Ko
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SciPost Physics Proceedings, 2023 After more than a decade since its discovery, the Galactic center gamma-ray excess - discovered with the Fermi Large Area Telescope - remains puzzling. While the spectrum of the signal can be explained by either dark matter or an unresolved population of
Oscar Macias, Martin Pohl, Chris Gordon, Phaedra Coleman
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TROJAN STARS IN THE GALACTIC CENTER [PDF]
The Astrophysical Journal, 2009 17 pages, 9 figures, accepted for publication in ...
Fujii, Michiko +3 more
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Constraining the Stellar Mass Function in the Galactic Center via Mass Loss from Stellar Collisions
Advances in Astronomy, 2011 The dense concentration of stars and high-velocity dispersions in the Galactic center imply that stellar collisions frequently occur. Stellar collisions could therefore result in significant mass loss rates.
Douglas Rubin, Abraham Loeb
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The Galactic Center in Color: Measuring Extinction with High-proper-motion Stars
The Astronomical JournalThe Milky Way’s central parsec is a highly extinguished region with a population of high-proper-motion stars. We have tracked 145 stars for ∼10 yr at wavelengths between 1 and 4 μ m to analyze extinction effects in color–magnitude space. Approximately 30%
Zoë Haggard +8 more
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Advanced Engineering Materials, EarlyView.New features on yttria‐stabilized zirconia after exposure at 1500°C: Newly discovered pyramidal structures on an old material. After exposure at 1550°C on the cross section of YSZ new features, namely pyramidal structures are discovered. These structures grow with time, increase in numbers, appear as singularities, are often arranged in strings, and ...
Doris Sebold +2 more
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The Astrophysical Journal Supplement Series, 2023 To overcome the high optical extinction, near-infrared (NIR) observations are needed for probing the microlensing events toward the Galactic center. The 2015–2019 UKIRT microlensing survey toward the Galactic center is the first dedicated precursor NIR ...
Yongxin Wen, Weicheng Zang, Bo Ma
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