Перегляд за Автор "Udovichenko, S. N."
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Документ HQ CAR IS A NEW W VIR TYPE STAR(Astroprint, 2013) Udovichenko, S. N.; Kovtyukh, Valery V.; Egorova, I. A.; Belik, S. I.HQ Car is listed as an Cep star (DCEP) in the GCVS. High-resolution spectra of HQ Car showed the presence of the Balmer and He I 5876˚A emissions. The light curve shows steeper rise than decline, and there is evidence for the presence of a bump in the descending branch around the phase of 0.4. From considerations of the period, spectral type, presence of the bump, Helium and Balmer emissions we conclude that HQ Car belongs to the W Vir class of Type II Cepheids.Документ INVESTIGATION OF THE PHOTOMETRIC SYSTEM OF CCD-PHOTOMETER AND THE AZT-3 TELESCOPE(Astroprint, 2012) Udovichenko, S. N.The investigation of the photometric system consisting from photometer with CCD detector Sony ICX429ALL, VRI filters and the AZT-3 telescope was carried out. The transformation coefficients from the instrumental values of magnitudes and color indices to the Johnson-Cousins system in the VRI passbands are presented. The instrumental system of telescope and standard system have satisfactory agreement.Документ Monitoring of space objects using Odessa Observatory network of telescope(2019) Andrievsky, Serhii M.; Bazyey, N. V.; Zhukov, V. V.; Koshkin, Nikolay I.; Kashuba, V. I.; Kashuba, S. V.; Gorbanev, Yuriy M.; Sukhov, P. P.; Podlesnyak, S. V.; Udovichenko, S. N.; Keir, L. E.; Андрієвський, Сергій Михайлович; Андриевский, Сергей Михайлович; Кошкін, Микола Іванович; Кошкин, Николай Иванович; Горбаньов, Юрій Михайлович; Горбанёв, Юрий МихайловичIn this paper we are presenting optical telescopes of Astronomical Observatory of I. I. Mechnikov Odessa National University. We are describing technical characteristics and scientific program for each telescope. Here we also present a description of the tools with which the unique collections of astroplates were obtained under the program “The Sky Service”. Odessa Observatory (46°.28 N, 30°.45 E, altitude 64 m, observation code 086) it has several observational stations. Among them: Mayaki (46.39° N, 30°.27 E, altitude 25 m, observation code 583) and Kryzhanovka (46°.37 N, 30°.48 E, altitude 40 m, observation code A85). Both stations have a good geographical location, as well as good astroclimate (up to 200 clear nights or part of the night). Telescopes are equipped with modern CCDs and photometric light detectors. Odessa Observatory has its own mechanical and optical workshops that are used for construction the new telescopes and manufacture and repair other astronomical equipment.Документ Observations of the mutual phenomena of the Galilean moons in 2009(Astroprint, 2010) Koshkin, Nikolay I.; Korobeinikova, E. A.; Shakun, Leonid S.; Dorokhov, N.; Doan, D.L.; Manh, T.N.; Minh, T.N.; Udovichenko, S. N.; Bondarenko, Yu. N.; Kashuba, V. I.; Klabukova, A.; Кошкин, Николай Иванович; Кошкін, Микола ІвановичThe instrumental and ephemeris preparation for the photometric observations of the mutual phenomena in the system of planetary satellites was conducted within the PHEMU09 project. Several reliable light curves and more than two tens of preparatory photometric observations of various mutual phenomena in the Jovian system were obtained. The observation data were processed, and the moments of the greatest phases of the phenomena were defined. The difference of moments of the observed greatest phases of the phenomena and the ephemerides, computed by the theory of V. Lainey, is about 0.02^0.5 minutes. To construct an improved theory of motion of the Jovian moons, the observations are to be used for the concluding processing in the IMCCE (Institute de Mecanique et de calcul des ephemerides, France) that coordinates the PHEMU09 campaign.Документ Photometric observations of a new eclipsing binary NSVS 8213217(Одеський національний університет імені І. І. Мечникова, 2016) Udovichenko, S. N.The photometric CCD observations for new suspected eclipsing binary NSVS 8213217 in Astronomical stations near Odessa (Ukraine) have been carried out. The light curves in V system were obtained and new adjusting period and light element was received. This star is identified as Algol-type eclipsing binary EA.Документ Photometric observations of a new eclipsing binary NSVS 8213217(Одеський національний університет імені І. І. Мечникова, 2016) Udovichenko, S. N.The photometric CCD observations for new suspected eclipsing binary NSVS 8213217 in Astronomical stations near Odessa (Ukraine) have been carried out. The light curves in V system were obtained and new adjusting period and light element was received. This star is identified as Algol-type eclipsing binary EA.Документ PHOTOMETRY AND BLAZHKO EFFECT IN RR Lyr TYPE STAR DM Cyg(Astroprint, 2010-07) Udovichenko, S. N.; Dubovsky, P. A.; Kudzej, I.The photometric CCD observations for RR Lyr type star DM Cyg in Astronomical stations near Odessa(Ukraine) and Kolonica(Slovakia) in 2008 and near Odessa in 2009 have been carried out. The light curves in V system were obtained and the frequency Fourier analyse was performed. From Fourier spectra of the light curves 18 frequencies were identified. The weak Blazhko effect was detected.Документ Photometry and Blazhko effect in RR LYR-Type star AE Leo(Одеський національний університет імені І. І. Мечникова, 2017) Udovichenko, S. N.; Keir, L. E.The photometric observations for the RR Lyr-type star AE Leo in the Astronomical station near Odessa using the 48-cm reflector AZT-3 and the CCD photometer equipped with the V filter have been carried out. The light curves shows variable amplitude of light maxima and the moderate Blazhko effect. The analysis of the O-C light maxima for our observations and the ASAS, NSVS data indicates the secular period changes.Документ Photometry and modulation of light curves in the Blazhko star V365 HER(Одеський національний університет імені І. І. Мечникова, 2015) Udovichenko, S. N.The photometric CCD observations for the Blazhko RR Lyr type star V365 Her in Astronomical stations near Odessa (Ukraine) have been carried out. The light curves in V system were obtained and the frequency Fourier analyse was performed. The strong Blazhko effect and modulation of the light curves were detected. From Fourier spectra 15 frequencies were identified.Документ Photometry and the Blazhko effect in the RR Lyr variable star Y Vul(Одеський національний університет імені І. І. Мечникова, 2020) Udovichenko, S. N.; Keir, L. E.The RR Lyr variable star Y Vul have been observed by using a CCD photometer during several seasons from 2011 to 2017. Nearly 5960 data points were obtained spanning over 53 nights. We found the amplitude and phase modulations with the amplitudes of 0.16 mag and 0.041 of the pulsating phase in V filter; 0.15 mag and 0.041 of the pulsating phase in R filter, respectively. The frequency Fourier analysis of the light curves with the help of Period04 software was performed, Blazhko modulation period (59.20 days) and triplet structures in the Fourier spectrum were detected. The pulsation frequency components in the Fourier spectrum were identified up to the 7th harmonic order, while the modulation side lobe frequencies – up to 9th order. The analysis of the light curves maxima resulted in the same value of the Blazhko period. The fundamental pulsation period of the star has been practically stable over a period of a hundred years.