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Interstellar matter structure along the line of sight to Cyg X-1статья
Информация о цитировании статьи получена из
Web of Science
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 22 ноября 2015 г.
- Авторы: Bochkarev N.G., Karitskaya E.A., Klochkova V.G., Yushkin M.V.
- Журнал: Baltic Astronomy
- Том: 24
- Год издания: 2015
- Издательство: Institute of Theoretical Physics and Astronomy
- Местоположение издательства: Lithuania
- Первая страница: 9
- Последняя страница: 16
- Аннотация: High-resolution spectra of Cyg X-1 = V1357 Cyg obtained with the NES echelle spectrograph of the Russian 6 m telescope (3950--6690 Å) were used to study narrow interstellar absorption lines. We resolved the interstellar line blends by fitting them with Gaussian profiles. The main three absorption components, with the heliocentric radial velocities V r = --1, --13 and --26 km/s, were revealed. They correspond to three interstellar gas and dust complexes along the line of sight to the object. Thus, we get information on the distribution of interstellar matter along the way to Cyg X-1. The interstellar calcium abundance and ionization degree, averaged along the line of sight, were determined. A weak component with V r = --43 km/s is revealed in the profiles of the strongest lines. We relate it to the approaching wall of the expanding interstellar envelope around the Cyg OB3 association (superbubble). This finding supports the view that Cyg X-1 was born in this stellar association and is still located in it.
- Добавил в систему: Бочкарев Николай Геннадиевич