[O~{\small VI} from the SBs of the LMC
Ananta C. Pradhan, Amit Pathak, Jayant Murthy, D. K. Ojha

TL;DR
This study measures O VI absorption in 10 superbubbles of the Large Magellanic Cloud, revealing significant variation and excess compared to non-superbubble regions, aiding understanding of hot gas in these structures.
Contribution
First detailed O VI absorption measurements in LMC superbubbles, showing variability and excess, enhancing knowledge of hot gas in stellar feedback regions.
Findings
O VI abundance varies across superbubbles
46% excess of O VI in SBs compared to non-SB lines
O VI column density varies by a factor of 2 to 2.5 within SBs
Abstract
We have presented the observations of O {\small VI} absorption at 1032 \AA\ towards 22 sightlines in 10 superbubbles (SBs) of the Large Magellanic Cloud (LMC) using the data obtained from the {\em Far Ultraviolet Spectroscopic Explorer (FUSE)}. The estimated abundance of O {\small VI} in the SBs varies from a minimum of (1.09 0.22) atoms/cm in SB N206 to a maximum of (3.710.23) atoms/cm in SB N70. We find about a 46% excess in the abundance of O {\small VI} in the SBs compared to the non-SB lines of sight. Even inside a SB, O {\small VI} column density (N(O {\small VI})) varies by about a factor of 2 to 2.5. These data are useful in understanding the nature of the hot gas in SBs.
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Taxonomy
TopicsAstrophysics and Star Formation Studies · Stellar, planetary, and galactic studies · Solar and Space Plasma Dynamics
