1,071 research outputs found

    New Cataclysmic Variable 1RXS J073346.0+261933 in Gemini

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    In course of the search for the optical identifications associated with ROSAT X-ray sources we have found a highly variable object with the very unusual long-term behavior, color indices and high X-ray-to-optical flux ratio. We report the archival photometric light curve from the Catalina Sky Survey, optical spectroscopy from RTT150 and time-resolved photometry from Astrotel-Caucasus telescope. The object appears to be the magnetic cataclysmic variable (polar) with orbital period of P=3.20 hr.Comment: 8 pages, 5 figures. Submitted to Astronomy Letter

    Identification of new cataclysmic variables in the 1RXS and USNO-B1.0 catalogs

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    As a result of applying the original optical variability search method on publicly available data, we have found eight new cataclysmic variables and two possible Optically Violent Variable quasars among the previously unidentified X-ray sources in the ROSAT catalog. We describe the search method and present the characteristics of the newly identified variable stars. The obtained results demonstrate the large potential of the concept of Virtual Observatory for identifying new objects of astrophysical interest.Comment: 16 pages, 11 figures, 2 tables; submitted to Astronomy Letter

    Cataclysmic Variables from USNO-B1.0 Catalog: Stars with Outbursts on Infrared Palomar Plates

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    The search was performed for cataclysmic variable stars with outlying infrared magnitudes in USNO-B1.0 catalog. The selection was limited to objects in the Northern hemisphere with (B1-R1) 3.5. The search method is described, and the details on individual stars are given. In total 27 variable objects were found with 20 being the previously known ones and 7 - new discoveries. 4 of newly found variables are dwarf novae, while the remaining 3 - pulsating red variables of Mira or semi-regular types, including a heavily reddened one in Pelican nebula. The correct pulsation period is determined for two stars discovered by other researchers, and the dwarf nova nature is confirmed for another object previously suspected as such. The perspectives of the proposed search technique in the framework of Virtual Observatory are also discussed.Comment: 8 pages, 10 figures, submitted to Astronomy Letter

    CHANGES IN LAW IN CONDITIONS OF PUBLIC MODERNIZATION: HISTORY AND MODERNITY

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    The article is devoted to changes in law in the process of social modernization. The historical analysis of changes in legal procedures in the process of historical formation of modern society is carried out. The factors of changes in modern legal systems and in the legal systems of the past are revealed. The article uses the methods necessary for the doctrinal analysis of changes in law, namely: formal-legal, as well as comparative-legal and concrete historical. The result of the study was the analysis and author’s conclusions about legal regulation and legal policy in a postmodern society

    Education in Germany for foreign students

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