The Sculptor Dwarf Irregular Galaxy and a Large Extragalactic Gas Cloud Detected wiih the Nancay Radiotelescope

Astronomy and Astrophysics – Astrophysics

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Scientific paper

On the cover of the December 1976 issue of THE MESSENGER was reproduced one of the first photos taken with the new ESO 3.6-m telescope: it represented a dwarf irregular galaxy in the southern constellation Sculptor. This galaxy was named SDIG by Drs. Laustsen, Richter, van der Lans, West and Wilson who reported about its optical properties in Astronomy & Astrophysics 54, p. 639 (January 1977). The Messenger photograph clearly shows resolved blue supergiant stars, which allowed the ESO astronomers to estimate the distance of SDIG at about 3 megaparsecs, or 9 million Light-years.

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