[vsnet-chat 7605] V850 Cen - ATEL 2779

[substelor at Safe-mail.net]

http://www.astronomerstelegram.org/?read=2779

Well, it's all go in Centaurus of late.

According to GCVS it's about half a mag in V range normally, from mag 13.4 down, so too faint for ASAS3.

Whether it does anything optically in a correlated sort of way, or on what time scales, I know not (sometimes there's a lag in xray and gamma ray sources before the optical event anyway, if the optical event is something circumstellar being hit).  I don't even know if anyone has ever monitored it optically during these outbursts, so it's all new stuff.  Periodic high energy outburster again.

This is MAXI/GSC

http://maxi.riken.jp/top/maxi_data/star_data/J1301-616/J1301-616_00055058g_lc.png

this is SWIFT (no doubt it'll be a ToO showing up on swift quicklook pages soon).

http://swift.gsfc.nasa.gov/docs/swift/results/transients/weak/GX304-1/

Centaurus is apparently late in the season though.

Cheers

John