Galaxy Pair NGC 5090 and 5091
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Galaxy Pair NGC 5090 and 5091

April 28, 2005
A pair of galaxies NGC 5090 - 5091 in Centaurus is shown in PR Photo 20d/99 ; they are located at about the same distance as ESO 269-57 and may belong to the same cluster of galaxies.

This is an interacting elliptical-spiral system with some evidence of tidal disruption of NGC 5091 (to the left; seen under a steep angle) by NGC 5090 (to the right). The velocity of the nucleus of NGC 5091 has been measured as 3429 km/sec, while NGC 5090 has a velocity of 3185 km/sec. NGC 5090 is associated with a strong, double radio source (PKS 1318-43).

This three-colour composite (BVR) was obtained with VLT ANTU and FORS1 in the morning of March 29, 1999. A bright star in the Milky Way, just outside the field at the upper left, has produced a pattern of blue straylight. The field size is 6.8x6.8 arcmin2. North is up and East is to the left.

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