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Spiral galaxy NGC 2997 in Antlia

auteur: Anglo-Australian Observatory/David Malin Images/Novapix

référence: a-gax29-97001

Image Size 300 DPI: 51 * 40 cm

The disc of NGC 2997 is inclined at about 45 degrees to our line of sight, revealing its internal structure and giving the galaxy an oval appearance. Like most spirals, the galaxy has two prominent spiral arms, which appear to originate in the yellow nucleus, are peppered with bright red blobs of ionised hydrogen which are similar to regions of star formation in our own Milky Way. Within these gas clouds are produced the hot blue stars which generate most of the light in the arms of the galaxy. A much older population of yellowish stars are concentrated around the nucleus. NGC 2997 is located in the southern constellation of Antlia, about 55 million light-years from us.

Keywords for this photo:

1979 - AAO - ANTLIA - ASTRONOMY - GALAXY - NGC 2997 - POSTER - Sc - SIDING SPRING - SOUTHERN HEMISPHERE - SPIRAL GALAXY - STAR - STAR FORMATION - YOUNG STAR -