Results 1 to 10 of about 3,884 (261)
Atomic Data Needs in Astrophysics: The Galactic Center “Scandium Mystery”
Atoms, 2020 Investigating the Galactic center offers unique insights into the buildup and history of our Galaxy and is a stepping stone to understand galaxies in a larger context.
Brian Thorsbro
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Revelations in our own backyard: Chandra’s unique Galactic Center discoveries [PDF]
Proceedings of the National Academy of Sciences of the United States of America, 2010 Sera Markoff, Markoff Sera
exaly +2 more sources
Proceedings of the International Astronomical Union, 2006 AbstractIn the past decade high resolution measurements in the infrared employing adaptive optics imaging on 10m telescopes have allowed determining the three dimensional orbits stars within ten light hours of the compact radio source at the center of the Milky Way.
Genzel, R., Karas, V.
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The Astrophysical Journal Letters, 2023 Sgr A* is the variable electromagnetic source associated with accretion onto the Galactic center supermassive black hole. While the near-infrared (NIR) variability of Sgr A* was shown to be consistent over two decades, unprecedented activity in 2019 ...
Grant C. Weldon +12 more
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Symposium - International Astronomical Union, 1981 Recent infrared and radio observations of the Galactic Center are reviewed. For the region between 1 and 100 pc most of the observed phenomena can be explained by a large density of late-type stars, a ring of molecular material, and a number of regions of active star formation. The central parsec (Sgr A) appears to be a unique region of activity in the
Ian Gatley, E. E. Becklin
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THE GALACTIC CENTER: NOT AN ACTIVE GALACTIC NUCLEUS [PDF]
The Astrophysical Journal Supplement Series, 2013 AbstractWe present 10 μm – 35μm Spitzer spectra of the interstellar medium in the central molecular zone (CMZ), the central 210 pc × 60 pc of the Galactic center (GC). We present maps of the CMZ in ionic and H2 emission, covering a more extensive area than earlier spectroscopic surveys in this region.
An, Deokkeun +2 more
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Galactic dynamics feeding the Galactic center [PDF]
Proceedings of the International Astronomical Union, 2013 AbstractWe present the hierarchical structure of the gas and its rapid evolution in the central region of a simulation of the entire Milky Way, run at subparsec resolution. We emphasize the coupling between the kpc-scale dynamics, the molecular ring and the central 5 pc disk feeding the supermassive black hole.
Renaud, Florent +2 more
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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
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THE GALACTIC CENTER ENVIRONMENT [PDF]
Annual Review of Astronomy and Astrophysics, 1996 ▪ Abstract The central half kiloparsec region of our Galaxy harbors a variety of phenomena unique to the central environment. This review discusses the observed structure and activity of the interstellar medium in this region in terms of its inevitable inflow toward the center of the Galactic gravitational potential well.
Morris, Mark, Serabyn, Eugene
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The distance to the Galactic Center [PDF]
Proceedings of the International Astronomical Union, 2012 AbstractOne of the Milky Way's fundamental parameters is the distance of the Sun from the Galactic Center, R0. This article reviews the various ways of estimating R0, placing special emphasis on methods that have become possible recently. In particular, we focus on the geometric distance estimate made possible thanks to observations of individual ...
Gillessen, S. +5 more
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