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Интеллектуальная Система Тематического Исследования НАукометрических данных |
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Search for and investigation of new open clusters using the data from huge astronomical cataloguesстатья
- Авторы: Koposov S.E., Glushkova E.V.
- Сборник: Exploiting Large Surveys for Galactic Astronomy, 26th meeting of the IAU, Joint Discussion 13, 22-23 August 2006, Prague, Czech Republic, JD13, #43
- Год издания: 2006
- Первая страница: 43
- Последняя страница: 44
- Аннотация: We describe here the methods of searching for new open clusters and determining their parameters. We have developed a new method of effectively searching star catalogues (like USNO, 2MASS etc.) for stellar clusters of different radii. This task is rather complex, and we do not know any successful attempts to automate such procedure applied for the search of open clusters. This method employs a modified technique of detection using the convolution with density functions. Also, we have developed a rather robust method, which can be used to determine whether an observed density peak is just an occasional overdensity of field stars, or this is a real group of evolutionary-related (lying on one isochrone) stars. That method is capable of simultaneous finding the position of the isochrone of the cluster. These last steps are mainly based on the fact that in real clusters, only stars lying on the isochrone show a density peak, whereas the field stars should demonstrate flat distribution. This fact allows us to find the position of the isochrone of the cluster even when the CMD is "noised" by field stars. So briefly, we can automatically find out prospective candidate for clusters, confirm them, and determine main parameters (age, radius, distance and color excess) of these clusters. This poster describes the methods which were used to discover and investigate the large set of open clusters in the Galactic anticenter (Glushkova, Koposov, this conference).
- Добавил в систему: Глушкова Елена Вячеславовна