Results 11 to 20 of about 157,868 (337)
The Far Side of the Galactic Bar/Bulge Revealed through Semi-regular Variables
The Astronomical Journal, 2023 The Galactic bulge is critical to our understanding of the Milky Way. However, due to the lack of reliable stellar distances, the structure and kinematics of the bulge/bar beyond the Galactic center have remained largely unexplored.
Daniel R. Hey +10 more
doaj +1 more source
HCO+ Clouds in the SGR b2 Region [PDF]
Journal of Astronomy and Space Sciences, 2004 The HCO^+ 1--0 transition line was observed toward the Sgr B2 region in our Galactic center. We found that there exist two large-scale velocity structures of vlsr ˜50 and ˜100 km/s, which are thought to interact with each other.
Y. C. Minh
doaj +1 more source
The Galactic Center Region Imaged by VERITAS from 2010{2012
Acta Polytechnica CTU Proceedings, 2014 The galactic center has long been a region of interest for high-energy and very-high-energy observations. Many potential sources of GeV/TeV gamma-ray emission are located in this region, e.g.
Matthias Beilicke
doaj +1 more source
Discovery of an Unbound Hyper-Velocity Star in the Milky Way Halo [PDF]
, 2005 We have discovered a star, SDSS J090745.0+024507, leaving the Galaxy with a heliocentric radial velocity of +853+-12 km/s, the largest velocity ever observed in the Milky Way halo.
Blaauw A. +10 more
core +1 more source
Kinematics of the Local Spiral Structure Revealed by Young Stars in Gaia DR3
The Astrophysical Journal Supplement Series, 2023 Using young open clusters and O–B2-type stars in Gaia Data Release 3, we investigate the kinematics of the local spiral structure. In general, the young sources in the outer spiral arms may present larger peculiar motions than those in the inner spiral ...
Dejian Liu +6 more
doaj +1 more source
X-ray Insight into High-Energy Processes in Extreme Galactic Nuclear Environment
Universe, 2022 Nuclear regions of galaxies apparently play a disproportionately large role in regulating their formation and evolution. How this regulation works, however, remains very uncertain.
Q. Daniel Wang
doaj +1 more source
Symposium - International Astronomical Union, 1984 The center of our Galaxy contains an extremely compact nonthermal radio source. For the first time, elongation in the source structure has been detected. The long axis is nearly aligned with the minor axis of the Galaxy. Recent high resolution observations of the ionized gas within the central 3 parsecs suggest that matter may be falling in towards the
openaire +2 more sources
How many young star clusters exist in the Galactic center? [PDF]
, 2000 We study the evolution and observability of young compact star clusters within about 200pc of the Galactic center. Calculations are performed using direct N-body integration on the GRAPE-4, including the effects of both stellar and binary evolution and ...
Dutra C. M. +8 more
core +3 more sources
Measuring Fundamental Galactic Parameters with Stellar Tidal Streams and SIM PlanetQuest [PDF]
, 2005 Extended halo tidal streams from disrupting Milky Way satellites offer new opportunities for gauging fundamental Galactic parameters without challenging observations of the Galactic center.
Allyson A. Polak +7 more
core +1 more source
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
doaj +1 more source