In article ,
"William R" writes:
The Magellanic Clouds are 2 satellite galaxies of the Milky Way,
easily visible from the Southern Hemisphere. Both are classed as
irregular galaxies although one (the LMC?) displays some incipient
bar structure I believe.

Yes, the LMC.

Objects in the galaxies (and there are many) are designated with
the prefix "N" Can anyone point out to me where a complete
catalogue of these N objects are on the web and it's history?

The starting point for such queries is the "Reference Dictionary"
at
http://vizier.u-strasbg.fr/cgi-bin/Dic-Simbad

You will find the origin of "N" to be Henize (1956) ApJS 2, 315, and
the objects in question are H II regions. The full article should be
on the web, and the catalog should be in SIMBAD. You will also find
that the designator "N" is now deprecated (mainly, I suspect, because
it has been so badly misused over the years.)

--
Steve Willner Phone 617-495-7123
Cambridge, MA 02138 USA
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