| Article in PDF |
"Peremennye Zvezdy", Prilozhenie, vol. 13, N 7 (2013) |
| #1. Department of Astronomy, Karazin Kharkiv National University, Kharkiv, Ukraine;
#2. Institute of Astronomy, Karazin Kharkiv National University, Kharkiv, Ukraine; #3. Institute of Astronomy, Russian Academy of Sciences, Moscow, Russia; #4. Sternberg Astronomical Institute, Lomonosov Moscow State University, Moscow, Russia |
| ISSN 2221–0474 |
Received: 27.03.2013; accepted: 1.04.2013
(E-mail for contact: shevchenko@astron.kharkov.ua)
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Comments:
1. Min II = 16.32. Vc–Rc = 0.55±0.02.
2. Vc–Rc = 0.65±0.02. M–m = 0.28 P.
3. Period is probably close to 1 day.
4. Vc–Rc = 0.76±0.02.Remarks:
Four variable stars were found during photometric observations of asteroids at the Scientific Research Institute for Astronomy of the Karazin Kharkiv National University (KhNU). Subsequent observations were carried out in the course of KhNU astronomy department students' astrophysical summer practical courses. All the data were obtained at the Chuguev observational station of the Scientific Research Institute for Astronomy of KhNU with its 70-cm AZT-8 Newton telescope (F = 2.8 m). The telescope is equipped with an FLI 47-10 Peltier-cooled CCD camera (1027×1056 pixels, pixel size 13×13 μm). Images were taken using V and R filters of the Johnson–Cousins photometric system. Original CCD frames were calibrated for dark current and flat field in the standard manner. To measure the stars' brightness, we used ASTPHOT package by Mottola et al. (1995). Relative accuracy of the photometry is 0.02. Our methods of observations and image processing are described in detail in Krugly et al. (2002) and Tereschenko et al. (2010).References:
Krugly, Yu. N., Belskaya, I. N., Shevchenko, V. G., et al., 2002, Icarus, 158, 294.
Mottola, S., de Angelis, G., di Martino, M., et al., 1995, Icarus, 117, 62.
Tereschenko, I. À., Shevchenko, V. G., Krugly, Yu. N., 2010, Kinematika i Fizika Neb. Tel, 26, No. 2, 74.
