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Three-dimensional Spectroscopy of Blue Compact Galaxies: Diagnostic Diagramsстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Martínez-Delgado I., Tenorio-Tagle G., Muñoz-Tuñón C., Moiseev A.V., Cairós L.M.
- Журнал: Astronomical Journal
- Том: 133
- Год издания: 2007
- Издательство: American Astronomical Society
- Местоположение издательства: United States
- Первая страница: 2892
- Последняя страница: 2897
- DOI: 10.1086/515438
- Аннотация: Here we present the analysis of three-dimensional spectroscopic data of three blue compact galaxies (Mrk 324, Mrk 370, and III Zw 102). Each of the more than 22,500 spectra obtained for each galaxy has been fitted by a single Gaussian from which we have inferred the velocity dispersion (σ), the peak intensity (I$_peak$), and the central wavelength (λ$_c$). The analysis shows that the σ versus I$_peak$ diagrams look remarkably similar to those obtained for giant extragalactic H II regions. They all present a supersonic narrow horizontal band that extends across the entire range of intensities and that results from the massive nuclear star-forming regions of each galaxy. The σ versus I$_peak$ diagrams also present several inclined bands of lower intensity and an even larger σ arising from the large galactic volumes that surround the main central emitting knots. We also show that the σ versus λ$_c$ and λ$_c$ versus I$_peak$ diagrams are powerful tools that are able to unveil the presence of high- and low-mass stellar clusters, and thus allow for the possibility of inferring the star formation activity of distant galaxies even if they are not spatially resolved.
- Добавил в систему: Моисеев Алексей Валерьевич