[vsnet-chat 3324] Re:[Vsnet-chat 3323] LS 5039 - "galactic microquasar"?

["Mati Morel" <morel@ozemail.com.au>]

Dear Taichi,
The brief note on LS 5039 is a little puzzling. The designation clearly
comes from the _Catalogue of Luminous Stars in the Southern Milky Way_,
(Stephenson and Sanduleak 1971). The ids. you give show the star to be a
normal B3Ib supergiant.
The description as a "galactic microquasar" is a contradiction. There is
nothing micro about  a quasar, nor is any to be found close to plane of the
Milky Way, like the stars in the LS catalogue.  Perhaps the term
"microquasar', unsatisfactory as it is,
was a quick short-hand way of describing some other phenomenon. If so, what
is the phenomenon?  Further information is requested, please.
The term "microquasar" is best avoided.
Cheers,
Mati

Morel Astrographics
c/o M. Morel, 6 Blakewell Rd, Thornton NSW 2322 AUSTRALIA
*Specialized Charts** Variable Star Studies** Stellar Data**
151o38'33" E, 32o46'47"S.               morel@ozemail.com.au

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