[vsnet-chat 7512] A New Algol-type Variable Star VSX J022427.8-104035

[Ivan Andronov]

A New Algol-type Variable Star,
 Discovered Using Remotely Controlled Telescope

Natalia Virnina 1,2

1)	Odessa National University, Odessa, Ukraine, virnina at gmail.com
2)	Odessa National Maritime University, Odessa, Ukraine

Abstract.   Variability of the star USNO-B1.0 0793-0023471=VSX J022427.8-104035 (R.A.(2000)=02h24m27.853s, Dec(2000)=-10d40m35.2s) had been discovered using the remotely controlled 206-mm astrophysical refractor of Tzec Maun Observatory (USA), which had been equipped with an SBIG monochrome camera (STL-11000) plus a photometric filter wheel. Further observations were obtained on 180-mm unfiltered refractor of the same observatory.
    The time series light curve shows narrow eclipses indicating that the object is an Algol-type binary without secondary minimum. Using the trigonometric polynomial fit of the statistically optimal order s (Andronov, 1994, http://il-a.pochta.ru/OAP7_49.pdf ), the value s=9 was determined, the initial epoch is T0=HJD 2455106.3231±0.0005, period P=0.522734±0.000015. The smoothed brightness at the minimum is mmin=16.079±0.008 (Rc) and at the maximum mmax=15.417±0.011 (Rc).

The full version of the article was submitted to the "Journal of the AAVSO". The original time series were published at the AAVSO site
http://aavso.org/vsx/docs/239151/1027/var_photometry.txt