|
ИСТИНА |
Войти в систему Регистрация |
Интеллектуальная Система Тематического Исследования НАукометрических данных |
||
H ii versus H i in the ‘green valley’ galaxies: direct comparisonстатья
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: 19 декабря 2019 г.
- Авторы: Bryukhareva Tatiana S., Moiseev Alexei V.
- Журнал: Monthly Notices of the Royal Astronomical Society
- Том: 489
- Номер: 3
- Год издания: 2019
- Издательство: Oxford Journals, Oxford University Press
- Местоположение издательства: Oxford, UK, England
- Первая страница: 3174
- Последняя страница: 3182
- DOI: 10.1093/mnras/stz2361
- Аннотация: We study the morphology and kinematics of the ionization state of the gas in four ‘green valley’ early-type galaxies at different stages of their transition from a ‘blue cloud’ of star-forming galaxies to the sequence of passive evolution. The previous H i mapping of the considered sample reveals a spatial offset between the cold gas reservoirs and stellar discs depending on the post-starburst age. Consideration of the ionized-gas properties is essential to understand the role of various feedback processes in star formation quenching. We performed long-slit and 3D optical spectroscopic observations at the 6-m Russian telescope and compared the gas and stellar kinematics. Spatial distribution of the ionized gas is in agreement with H i maps; however, the one-order higher angular resolution in the H ii velocity fields allows us to study non-circular gas motions in detail, like the active galactic nucleus-driven outflow in the nucleus of J1117+51. The most intriguing result is the global H i + H ii gas counter-rotation relative to the stellar disc in J1237+39. Therefore, in this case all the observed gas in the ‘green valley’ galaxy was captured from the environment via accretion or minor merging.
- Добавил в систему: Брюхарева Татьяна Сергеевна