naa a22 4500 510790461 CHVBK 20180411083318.0 cr unu---uuuuu 180411e20130201xx s 000 0 eng 10.1134/S1063773713020011 doi (NATIONALLICENCE)springer-10.1134/S1063773713020011 Comparative analysis of photometric variability of TT ARI in the years 1994-1995 and 2001, 2004 [Elektronische Daten] [A. Belova, V. Suleimanov, I. Bikmaev, I. Khamitov, G. Zhukov, D. Senio, I. Belov, N. Sakhibullin] We present the results of photometric observations of a bright cataclysmic variable TT Ari with an orbital period of 0.13755 days. CCD observations were carried out with the Russian-Turkish RTT 150 telescope in 2001 and 2004 (13 nights). Multi-color photoelectric observations of the system were obtained with the Zeiss 600 telescope of SAO RAS in 1994-1995 (6 nights). In 1994-1995, the photometric period of the system was smaller than the orbital one (0 . d 132 and 0 . d 134), whereas it exceeded the latter (0 . d 150 and 0 . d 148) in 2001, 2004. An additional period exceeding the orbital one (0 . d 144) is detected in 1995 modulations. We interpret it as indicating the elliptic disc precession in the direction of the orbital motion. In 1994, the variability in colors shows periods close to the orbital one (0 . d 136, b-v), as well as to the period indicating the elliptic disk precession (0 . d 146, w-b). We confirm that during the epochs characterized by photometric periods shorter than the orbital one, the quasi-periodic variability of TT Ari at time scales about 20 min is stronger than during epochs with long photometric periods. In general, the variability of the system can be described as a "red” noise with increased amplitudes of modulations at characteristic time scales of 10-40 min. Pleiades Publishing, Ltd., 2013 binary stars nationallicence cataclysmic variables nationallicence TT Ari nationallicence Belova A. Kazan (Volga Region) Federal University, ul. Kremlevskaya 18, 420008, Kazan, Russia aut Suleimanov V. Kazan (Volga Region) Federal University, ul. Kremlevskaya 18, 420008, Kazan, Russia aut Bikmaev I. Kazan (Volga Region) Federal University, ul. Kremlevskaya 18, 420008, Kazan, Russia aut Khamitov I. TUBITAK National Observatory, Antalya, Turkey aut Zhukov G. Kazan (Volga Region) Federal University, ul. Kremlevskaya 18, 420008, Kazan, Russia aut Senio D. Kazan (Volga Region) Federal University, ul. Kremlevskaya 18, 420008, Kazan, Russia aut Belov I. Kazan (Volga Region) Federal University, ul. Kremlevskaya 18, 420008, Kazan, Russia aut Sakhibullin N. Kazan (Volga Region) Federal University, ul. Kremlevskaya 18, 420008, Kazan, Russia aut Astronomy Letters SP MAIK Nauka/Interperiodica 39/2(2013-02-01), 111-125 1063-7737 39:2<111 2013 39 11443 https://doi.org/10.1134/S1063773713020011 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S1063773713020011 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Belova A. Kazan (Volga Region) Federal University, ul. Kremlevskaya 18, 420008, Kazan, Russia aut NATIONALLICENCE 700 1- Suleimanov V. Kazan (Volga Region) Federal University, ul. Kremlevskaya 18, 420008, Kazan, Russia aut NATIONALLICENCE 700 1- Bikmaev I. Kazan (Volga Region) Federal University, ul. Kremlevskaya 18, 420008, Kazan, Russia aut NATIONALLICENCE 700 1- Khamitov I. TUBITAK National Observatory, Antalya, Turkey aut NATIONALLICENCE 700 1- Zhukov G. Kazan (Volga Region) Federal University, ul. Kremlevskaya 18, 420008, Kazan, Russia aut NATIONALLICENCE 700 1- Senio D. Kazan (Volga Region) Federal University, ul. Kremlevskaya 18, 420008, Kazan, Russia aut NATIONALLICENCE 700 1- Belov I. Kazan (Volga Region) Federal University, ul. Kremlevskaya 18, 420008, Kazan, Russia aut NATIONALLICENCE 700 1- Sakhibullin N. Kazan (Volga Region) Federal University, ul. Kremlevskaya 18, 420008, Kazan, Russia aut NATIONALLICENCE 773 0- Astronomy Letters SP MAIK Nauka/Interperiodica 39/2(2013-02-01), 111-125 1063-7737 39:2<111 2013 39 11443 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer