[vsnet-obs 67586] Observations of the asynchronous polar V1432 Aql

[Ivan Andronov]

Observations of the asynchronous polar V1432 Aql

The star was observed using the RCOS 16" Ritchey-Chretien telescope of the Tzec
Maun observatory.
1.9 hour run was obtained in alternatively changing Bessel filters V and R.
Totally 37 points were obtained.

The star exhibits two types of eclipses - of the white dwarf and emitting
regions by the red dwarf (with an orbital period) and self-eclipses of both
accretion columns.
The white dwarf is spinning up to reach synchronism at a characteristic time
scale 96.7+-1.5 years
( http://cdsads.u-strasbg.fr/abs/2006A%26A...452..941A ,
http://cdsads.u-strasbg.fr/abs/2007Ap.....50..105A )

The light curves in the filters V, R and the color index V-R computed from the
interpolated values of V and R is shown at
http://uavso.org.ua/curves/v1432aql_20100531.jpg
The first point in R is faint, what is assumed to correspond to a deep orbital
eclipse caused by the red dwarf (with an accuracy of few minutes, which is
estimated from the shape of minima published in papers mentioned above).
It occurred at BJD 2455347.85888. It will be used for a corrected ephemeris for
forthcoming dates.