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Structure in phase space associated with spiral and bar density waves in an N-body galactic disk
bar density waves N-body galactic disk
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2011/1/11
An N-body simulation of a Galactic disk is used to study the stellar phase space distribution or velocity distributions in different local neighborhoods. Pattern speeds identified in Fourier spectrogr...
The population of ULXs in the spiral galaxy NGC 2276
ULXs the spiral galaxy NGC 2276
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2011/1/11
We present results for X-ray point sources in the Sc galaxy NGC 2276, obtained by analyzing Chandra data. The galaxy is known to be very active in many wavelengths, possibly due to gravitational inter...
The spiral structure of the Galaxy revealed by CS sources and evidence for the 4:1 resonance
Galaxy Astrophysics (astro-ph.GA)
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2010/12/28
We present a map of the spiral structure of the Galaxy, as traced by molecular CS emission associated with IRAS sources which are believed to be compact HII regions. The CS line velocities are used to...
Importance of far-infrared mapping in a spiral galaxy: AKARI observation of M81
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
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2010/12/27
The importance of the far-infrared (FIR) mapping is demonstrated for a face-on spiral galaxy, M81, by analyzing its imaging data at 65, 90, and 140 {\mu}m taken by AKARI. Basic products are the dust t...