[vsnet-chat 3207] re MV TrA ... the prequel

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

MV TrA = HIP 81753 = HDS 2370 is listed in a new photometric study by
Fabricius et al A&A 356, 141 (2000), which is essentially a new
assessment
of Hipparcos doubles and their photometric properties which I think is a
part of the developing Tycho3 study.

Anyway, the primary is listed as having BT = 11.06 & VT 9.63

and the secondary is listed as having BT 11.27 & VT 10.28

which equates to transformed Johnson B-V values of +1.22 and +0.84.

This *possibly* suggests that the MHD derived spectrum of K0III may just
be a blend.

It is not clear whether the primary or the secondary is the variable, or
which connects with either the ROSAT source and/or the IRAS source.

John

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