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| Discovery of supperbubbles in nearby disk galaxies |
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I will report our recent work of the discovery of
supperbubbles in NGC5775 and
NGC5866. Both of them are nearby edge-on disk
galaxies, but have different
Hubble type and energetics. NGC5775 is an Sb galaxy
with disk wide star
formation. We have detected a ~10 kpc scale shell-like
feature in soft X-ray by
Chandra, which is thought to be a superbubble
produced by past starburst
activity in the nucleus. NGC5866 is an S0 galaxy with a
lot of extraplanar dust
features detected in optical by HST, including a ~100 pc
scale shell-like feature.
An estimation of the potential energy indicates that it
could be produced either
by single SNe Ia near the disk or by an obscured AGN. |
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| Id: |
25 |
| Place: |
Lijiang, Yunnan, China
Room: Conference Hall in Hansange Hotel |
| Starting date: |
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| Duration: |
20' |
| Contribution type: |
Contributed Oral Report |
| Primary Authors: |
Mr. LI, Jiangtao (Astronomy Department of Nanjing University) |
| Co-Authors: |
Prof. WANG, Q. Daniel (UMass)
Dr. LI, Zhiyuan (CfA)
Prof. CHEN, Yang (NJU) |
| Presenters: |
Mr. LI, Jiangtao |
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| Included in track: |
Theme3: Wind-driven bubbles/galactic fountains, AGNs |
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