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"The best observing practice is to adopt a star and stick to it - *density of observation* is very critical.  Until you don't like it any more - then adopt a different star!" --Joe Patterson (Columbia University, CBA boss)

Our first observing priority are accreting white dwarfs which have been observed to host classical nova explosions. As Joe Patterson said on 2016 Apr 25, A word about this project - the long-term "old nova project". We'd like to track the evolution of nova orbital light curves, over the first few decades after outburst. The most interesting interval is the first few years, so even very recent novae (say 1-3 years) are eligible. Most novae flash orbital light curves, and most show a very characteristic light curve, suggesting heating of the secondary - a double-sinusoid with an apparent eclipse. In theory, the evolution of the "eclipse" and the double wave allows deduction of the changing pattern of heating in the binary... and that might even allow us to track the cooling of the white dwarf, decades after eruption.

Last updated by Daniel Coulter on 2017 June 6.

Stars Edit

YZ CNC: 08:10:56.65, +28:08:33.2 Edit

  • Finder chart
  • Variable Type: SU UMa type dwarf nova
  • Campaign Timeframe: ongoing
  • Filter to use: V
  • Exposure Length: not specified
  • Orbital Period: 2.08 hours
  • Outburst Period: 7-10 days
  • Superoutburst Period: 100-110 days
  • Quiescence Magnitude: 14.8
  • Outburst Max Magnitude: 12.0
  • Superoutburst Max Magnitude: 11.0

OV Boo: 15:07:22.35, +52:30:39.8 Edit

ES Dra: 15:25:31.81, +62:01:00.0 Edit

  • Variable Type: Z Cam dwarf nova
  • Campaign Timeframe: ongoing
  • Filter to use: V (Clear if too dim)
  • Exposure Length: not specified
  • Period: 4.2 hours
  • Quiescence Magnitude: 15.4
  • Negative Superhump Magnitude: 17.0

CR Boo: 13:48:55.22, +07:57:35.8 Edit

  • Variable Type: AM CVn type dwarf nova
  • Campaign Timeframe: ongoing
  • Filter to use: Clear
  • Exposure Length: not specified
  • Quiescence Magnitude: ~15.0
  • Is too low for the telescope at ~2:30 AM

Intermediate Polars Edit

DW Cnc: 07:58:53.07, +16:16:45.4 Edit

FQ Aqr: 20:51:21.34, +02:18:46.4 Edit

V598 Peg = RX233325.92+152222: 23:33:25.99, +15:22:22.2 Edit

Mystery Stars Edit

FS Aur: 05:47:48.36, +28:35:11.2 Edit

Paloma=RX J0524+4244: 05:24:30.44, +42:44:50.8 Edit

Retired (at least presently): Edit

AM CVn: 12:34:54.62, +37:37:44.1 --- retired as of Summer 2017





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