SMA observations of Haro 2: molecular gas around a hot superbubble
SMA observations of Haro 2: molecular gas around a hot superbubble
复制标题
Haro 2 的 SMA 观测:热超级气泡周围的分子气体
DOI:
10.1093/mnras/staa660
复制
发表时间:
2020
影响因子:
4.8
通讯作者:
Turner, Jean
中科院分区:
文献类型:
--
作者:
Beck, Sara C;Hsieh, Pei-Ying;Turner, Jean
Haro 2, a nearby dwarf starburst dwarf galaxy with strong Ly α emission, hosts a starburst that has created outflows and filaments. The clear evidence for galactic outflow makes it an ideal candidate for studying the role of molecular gas in feedback processes in a dwarf galaxy. We observed CO(2–1) in Haro 2 at the Submillimeter Array in the compact and extended configurations, and have mapped the molecular emission with velocity resolution 4.1 km s−1and spatial resolution 2.0 × 1.6 arcsec2. With this significant increase of resolution over previous measurements, we see that the molecular gas comprises two components: bright clumps associated with the embedded star clusters of the starburst, and fainter extended emission east of the starburst region. The extended emission coincides with an X-ray bubble and has the kinematic signatures of an outflowing cone or of an expanding shell or bubble; the velocity range is ∼35 km s−1. We suggest that the starburst winds that created the X-ray bubble have entrained the molecular gas, and that the apparent velocity gradient at an angle to the photometric axis is an artefact caused by the outflow. The molecular and X-ray activity is on the east of the galaxy and the ionized outflow and optical filaments are west; their relationship is not clear.
登录
查看更多内容
DOI:
--
发表时间:
2003
期刊:
影响因子:
--
作者:
H. Bravo;E. Brinks;A. Baker;F. Walter;D. K. D. D. A. Guanajuato;Mexico Inaoe Puebla;Mexico Ovro Caltech;Usa Mpi Garching;Germany Nrao Socorro;Usa Iap Paris;France
通讯作者:
France
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
A. Aversa;A. Aversa;A. Aversa;Kelsey E. Johnson;Kelsey E. Johnson;C. Brogan;W. Goss;D. Pisano;D. Pisano
通讯作者:
D. Pisano
DOI:
--
发表时间:
2017
期刊:
影响因子:
--
作者:
G. Parmentier
通讯作者:
G. Parmentier
DOI:
--
发表时间:
2005
期刊:
影响因子:
--
作者:
F. Israel
通讯作者:
F. Israel
DOI:
--
发表时间:
2002
期刊:
影响因子:
--
作者:
A. Petrosian;T. Movsessian;G. Comte;D. Kunth;S. Dodonov
通讯作者:
S. Dodonov