(cba:news) hp lib, cr boo, am cvn, sdss0902+38
jop at astro.columbia.edu
Sat Mar 15 01:42:24 EDT 2014
It's March again, and practically all the AM CVn stars are up there,
ripe for observation. Most importatntly, sdss0902+38 has risen brighter
than a few days, quite possibly signifying its first-ever superoutburst.
Wonderful target - who knows when the next chance will come?
We're getting good coverage on AM CVn, and in a few more weeks we'll be
able to nail down the long-term Pdot (orbital, that is). Good target
for bright, moonlit skies. And in fact, *so* good that it's time - or
very soon will be the time - to do the same for HP Lib. Like AM CVn, it
will likely be found a source of gravity waves, and to reap that benefit
we need to know the *precise* orbital period. Over a long baseline.
Easy target for all CBA scopes.
I agonize about CR Boo. We really want to find it faint, or *extremely*
bright. It usually ramps up and down rapidly in an intermediate
brightness state - and periodicity analysis is then quite hampered. On
the other hand, if we don't look frequently, we won't find out about its
luminosity states *or* its periodicities. So keep an eye on it.
And there are others too. Major league baseball, Einstein's birthday,
March madness, the AM CVns... they all come together near the equinox.
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