[vsnet-chat 3205] re re IRAS18314+0134

[no name <crawl@zoom.co.uk>]

I've just learnt that this area of sky may well be known as the Serpens
Dark Cloud.

Specifically, something known as the Serpens Reflection Nebula lies
within a degree or so of RA and less in Dec.  This is apparently fairly
well known as a site of stellar formation & nest of IR sources.


Incidentally, does anyone out there know of any list of R Associations
or T Associations?  I've "reverse engineered" the former in the past,
but the latter are obscure.  Not many of either are known.

There is a loose definition that OB Associations are birthplaces of
primarily high mass stars [eg Per OB1], R ones of primarily medium mass
stars [eg around the Lagoon Nebula in Sgr], and T ones for low mass
stars [eg Taurus-Auriga Dark Cloud], but I dunno how much this holds.

John

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