منابع مشابه
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If the Galactic rotation speed at the Solar circle is ∼ 200 km s or smaller, which is supported by several recent studies, the rotation curve of the Galaxy could be declining in the outermost region. Motivated by this, we investigate the effect of such declining rotation curve on the estimate of the MACHO mass and the fractional contribution of the MACHOs to the Galactic dark halo. Using Hernqu...
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I present sensitive high resolution VLA B, C, and D array observations of the almost edge-on Scd galaxy NGC 4244 in the 21-cm spectral line of neutral atomic hydrogen. The gas layer of NGC 4244 is rather symmetric in all respects, i.e. the surface density distribution, flaring and warping. This symmetry allows for a reliable determination of the rotation curve, despite the fact that the galaxy ...
متن کاملThe Universal Rotation Curve of Spiral Galaxies
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ژورنال
عنوان ژورنال: Publications of the Astronomical Society of Australia
سال: 1997
ISSN: 1323-3580,1448-6083
DOI: 10.1071/as97085