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Observations of O vi Absorption from the Superbubbles of the Large Magellanic Cloud

Published online by Cambridge University Press:  29 January 2014

Ananta C. Pradhan
Affiliation:
Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400005, India, email: acp@tifr.res.in
Amit Pathak
Affiliation:
Department of Physics, Tezpur University, Tezpur 784028, India
Jayant Murthy
Affiliation:
Indian Institute of Astrophysics, Koramangala II block, Bangalore 560034, India
D. K. Ojha
Affiliation:
Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400005, India, email: acp@tifr.res.in
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Abstract

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We have presented the observations of O VI absorption at 1032 Å towards 22 sightlines in 10 superbubbles (SBs) of the Large Magellanic Cloud (LMC) using the data obtained from the Far Ultraviolet Spectroscopic Explorer (FUSE). The estimated abundance of O VI in the SBs varies from a minimum of (1.09 ±0.22)×1014 atoms/cm2 in SB N206 to a maximum of (3.71±0.23)×1014 atoms/cm2 in SB N70. We find about a 46% excess in the abundance of O VI in the SBs compared to the non-SB lines of sight. Even inside a SB, O VI column density (N(O 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.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2014 

References

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