期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 441, 期 2, 页码 1095-1104出版社
OXFORD UNIV PRESS
DOI: 10.1093/mnras/stu620
关键词
ISM: bubbles; ISM: clouds; ISM: individual objects: Eridanus filments; ISM: individual objects: Orion-Eridanus superbubble; ISM: structure
资金
- Natural Sciences and Engineering Research Council of Canada graduate scholarship programme
- Natural Sciences and Engineering Research Council (NSERC) Discovery Grant
- National Science Foundation
- Direct For Mathematical & Physical Scien
- Division Of Astronomical Sciences [1313188] Funding Source: National Science Foundation
The Orion-Eridanus superbubble, formed by the nearby Orion high-mass star-forming region, contains multiple bright H alpha filaments on the Eridanus side of the superbubble. We examine the implications of the H alpha brightnesses and sizes of these filaments, the Eridanus filaments. We find that either the filaments must be highly elongated along the line of sight or they cannot be equilibrium structures illuminated solely by the Orion star-forming region. The Eridanus filaments may, instead, have formed when the Orion-Eridanus superbubble encountered and compressed a pre-existing, ionized gas cloud, such that the filaments are now out of equilibrium and slowly recombining.
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