Lost and found dark matter in elliptical galaxies

Article Abstract:

A study is conducted to show that the low-velocities are infact compatible with galaxy formation in dark-matter haloes. It is found that the stellar orbits in the outer regions of the resulting elliptical are very elongated and these elongated orbits, combined with steeply falling density profile of the observed tracers, explain the observed velocities even in the presence of large amounts of dark matter.

Analysis, Dark matter (Astronomy), Elliptical galaxies, Dark matter

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Vigorous star formation hidden by dust in a galaxy at a redshift of 1.4

Article Abstract:

Near-infrared surveys have shown many faint galaxies are red in their optical to near-infrared colours. This may arise due to the absence of recently formed stars or because the large amount of dust in the galaxies reddens the light. The detection of continuum emission from warm dust in HR10, one of the reddest galaxies known, shows that it is a dusty galaxy undergoing massive-star formation.

Stars, Red shift, Redshift

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Elliptical view of galaxies past

Article Abstract:

Several studies of the nearby 'early-type' galaxies are conducted to explain the formation of the galaxies from their masses.

Science & research, Chemical properties, Galactic nuclei

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