Davies-Elliott-Meaburn Catalog

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Under the title The nebular complexes of the large and small Magellanic Clouds RD Davies, KH Elliott and J. Meaburn in 1976 in the published Memoirs of the Royal Astronomical Society , a photographic survey of fog complexes of the Greater and Lesser Magellanic Cloud in Hα and [N II]. The survey can be seen as a refinement of that by Henize from 1956 (abbreviation 'N') and, together with this, the most important surveys of the nebulae of the Magellanic Clouds. It brought out numerous new foggy objects with low surface brightness; some of them were offshoots from objects already known from Henize's work, others were entirely new nebulae and candidates for supernova remnants. The objects in the catalog are referred to under the abbreviation DEM (derived from the initials of the authors), followed by a sequence number, which is preceded by the letter L for objects of the large magellanic cloud or S for those of the small magellanic cloud .

The screening was carried out using long-term exposed photographic plates that were obtained at the Siding Spring Observatory and cover a total of around 6 square degrees of sky. In its original version from 1976, the catalog contained a total of 329 objects from the Large and 167 from the Small Magellanic Cloud. Meaburny published in 1986 ( Young-star formation in the Magellanic HI bridge ; Mon. Not. R. Astron. Soc. 223) an addition by five objects, so that the small magellanic cloud today counts 172 DEM objects.

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