[vsnet-alert 7364] Re: nova in M7?

[Taichi Kato <tkato@kusastro.kyoto-u.ac.jp>]

Re: [vsnet-alert 7360] nova in M7?

   As Yamaoka-san and Brian mentioned, this (supposedly identified) star
is bright in X-rays.

   The 2MASS color is not red, indicating that the object is not a (late-type)
flare star.  Furthermore, the ROSAT hardness ratios are relatively hard
(unlike flare stars), possibly suggesting that something unusual (e.g.
accretion event to a compact object) may be taking place.

GSC7386.355 175345.35 -344637.2 (2000.0) 10.37 6 N
GSC7386.355 175345.36 -344636.9 (2000.0) 10.66 6
USNO0525.24663353 175345.362 -344637.11 (2000.0) 10.5 99.9
2MASS 175345.403 -344636.31 (2000.0)  9.799  9.461  9.320
175345.1 -344635 (2000.0) CPD-34.7298 9.5
175345.1 -344630 (2000.0) 1RXPJ175345-3446.4 0.0072 0.88 -0.32
175345.1 -344631 (2000.0) 2RXP_J175345.2-344632 0.0073N 0.88 -0.28 930322
175345.1 -344637 (2000.0) 1WGAJ1753.7-3446 0.0052 0.23 1.20 1.00 0.21 obs=1992.277
175345.3 -344639 (2000.0) 2RXP_J175345.4-344639 0.0063N 0.86 -0.18 921003
175345.3 -344641 (2000.0) 1RXPJ175345-3446.7 0.0062 0.86 -0.09
175345.4 -344626 (2000.0) 1WGAJ1753.7-3446 0.0065 0.25 1.17 1.18 0.28 obs=1993.084
175345.6 -344627 (2000.0) 1RXPJ175345-3446.4 0.0078 0.79 0.03
175345.6 -344631 (2000.0) 2RXP_J175345.6-344631 0.0079N 0.81 0.00 930325

> I was observing M7, and I did a picture.

   Would you please send this picture to Yamaoka-san for more detailed
identification?

Regards,
Taichi Kato

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