Dear CBAers,Thanks to Jonathan, attached is the short-version of our T Pyx paper. It should also appear on astro-ph in a few days... and a longer version - with much more data, data analysis, and speculation - 1-2 months later.
We're through with T Pyx for the season - or at least for March. Some observations in April will keep the ephemeris tight, and establish the new period with sufficient precision to bridge to future years.
Bill Stein is continuing to study TCP1537-24, but otherwise this (likely very) important star is getting neglected. It would be great to cover this dwarf-nova during its first-ever outburst!
Two other stars.Nova Mon 2012. We still seek long light curves of this star. Decently placed for all hemispheres. The period is long - 7 hours - so you need long runs (>4 hr for sure), but it's important to define the light curve in this, year zero after eruption.
YY Sex. This has been off our lists for a few years. There's a stable ~100 minute period, and the stability of that period is enough to convince me that it's an AM Her star (only an orbital period could be *that* stable). But the quality of our limit would now be 2-3 times better, since more time has elapsed. It's a nice target for a bright Moon, since the orbital modulation is huge in I light.
Enrique, can you update on the other long-term dwarf-nova studies? Especially ER UMa and OT0754+38. And re BK Lyn, I'm inclined to think that somewhat more coverage is desirable, to keep track of the period. Do you agree?
joe
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tpyxasp.pdf
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