Combined color indexes and photometric structure of galaxies NGC 834 and NGC 1134

Дата и время публикации : 2000-01-17T09:58:27Z

Авторы публикации и институты :
D. Bizyaev (Sternberg Astronomical Institute)
A. Zasov (Sternberg Astronomical Institute)
S. Kajsin (Special Astrophysical Observatory of RAS)

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Ссылка на журнал-издание: Astron.Lett. 27 (2001) 217-227
Коментарии к статье: 3 pages, 4 embedded figures, LaTeX2e, using the EslabStyle.cls file, presented as a poster in the 33rd ESLAB Symp. “Star formation from the small to the large scale”, Noordwijk, The Netherlands, 2-5 November 1999, (F. Favata, A.A. Kaas & A. Wilson eds, ESA SP-445)
Первичная категория: astro-ph

Все категории : astro-ph

Краткий обзор статьи: We present the results of BVRI photometry of two galaxies with active star formation: NGC 834 and NGC 1134. Combined color index Q_{BVI} was used to investigate the photometrical structure of the galaxies. Index Q_{BVI} is not affected by internal extinction and is sensitive to the presence of blue stars. Ring-like region with active star formation at 15" from the center reveals itself in the Q_{BVI} map of NGC 834. Three-arm spiral structure is well-seen on the Q_{BVI} map of NGC 1134. We propose to use the combined indexes Q_{BVI} and similarly defined indices as a tracers of Star Formation activity and structure of dusty galaxies.

Category: Physics