[vsnet-chat 749] Re: [vsnet 1291] DI Cru

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

At 02:31 PM 3/3/98 +0900, you wrote:
>DI Cru
>
>    According to the recent article by Steiner and Diaz (PASP in press),
>HD104994, now named DI Cru, shows peculiar characteristic common to the
>peculiar "novalike" V Sge.  The spectrum of DI Cru is WR, resembling that
>of V Sge, the orbital period 7.46 hr (Niemela et al.).  Being 10-th mag
>object, this star should deserve a handy target for small telescopes.
>(The only regret for me is that the star locates too south..).  It would
>be interesting to see whether the star shows long-term behavior similar to
>that of V Sge.
>
Colleagues,
        I notice that a fine chart and deep photoelectric sequence exists
for the region of DI Cru. It is in Astron. Astrophys. Suppl.(1973)12,365-380
by G. Lynga and S. Wramdemark. In area CB, HD 104994 is identified and measured
as Star 11, V=10.93, B-V =-0.06, U-B =-0.84.   The nearest star of somewhat
similar brightness is Star 14 (V = 10.36, B-V = 1.22, U-B = 1.05) at
(1950) 12:03:10 -61:50.9.
Star 21 has V = 10.97, B-V = 1.00, U-B = 0.75.  It is at (1950) 12:05:06,
-62:10.8.

HD 104994 is also on HDE chart 149, very close to the left edge and just 
south following HD 104901, a double star (d = 26").

Regards,
/Mati

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