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Cross-Matching of Large Sky Surveys and Study of Astronomical Objects Apparent in Ultraviolet Band Only

Avdeeva, Aleksandra S. ; Karpov, Sergey V. ; Malkov, Oleg Yu ; Zhao, Gang

Data Analytics and Management in Data Intensive Domains, p.53-73 [Periódico revisado por pares]

Cham: Springer International Publishing

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  • Título:
    Cross-Matching of Large Sky Surveys and Study of Astronomical Objects Apparent in Ultraviolet Band Only
  • Autor: Avdeeva, Aleksandra S. ; Karpov, Sergey V. ; Malkov, Oleg Yu ; Zhao, Gang
  • Assuntos: Stars ; Surveys
  • É parte de: Data Analytics and Management in Data Intensive Domains, p.53-73
  • Descrição: Cross-matching of various information sources is a powerful tool in astronomy that helps to not only enrich and augment the contents of individual ones, but also to discover new and unique objects. In astronomy, cross-matching of catalogues is a standard tool for getting broader information on the objects by combining their data from the surveys performed at different wavelengths, and it allows to solve number of tasks like studying various populations of astronomical objects or investigating the properties of interstellar medium. However, the analysis of objects present in just one catalogue and missing the counterparts in all others is also a promising method that may lead to the discovery of both transients and objects with extreme color characteristics. Here we report on our preliminary search for objects that manifest only in ultraviolet observations by comparing the data from GALEX catalogue with several other surveys in different wavelength ranges. We describe the selection of representative sky surveys for this task and give the details on the process of their cross-matching and filtering of the results. We also discuss the possible nature of several outstanding objects detected during the analysis. We have been able to detect some of faint UV-luminous-only candidates, and a single transient event corresponding to the flare on a cool sdM subdwarf. Additionally, we discuss the potential output of a larger-scale investigation we are planning based on the experience gained during this initial study.
  • Títulos relacionados: Communications in Computer and Information Science
  • Editor: Cham: Springer International Publishing
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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