(cba:news) xmmu J1151-62
jop at astro.columbia.edu
Tue May 7 03:24:23 EDT 2013
Hi (southern) CBAers,
Cancel the nightly coverage on this peculiar star - likely a nova in
2008 (though with most of its eruption probably occurring while hiding
in the solar glare). We found a strong period of 0.3604 d in 2010, when
the star was at V=13.9. Now it has faded by about 1 mag... and that
signal (probably Porb) is gone. Much to my surprise and chagrin.
One can dream up a scheme to explain it - decline of the supersoft
source - but whether that's right or not, quien sabe?
Anyway it's not a good target to pursue. It waffles around between 16.0
and 14.7, slowly and without a discernible pattern - despite good
coverage from Josch and Berto. Not a winner. On to other stars!
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