An Extremely Large Excess of 18O in the Hydrogen-deficient Carbon Star HD 137613
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Clayton, Geoffrey C
Herwig, Falk
Geballe, Thomas R
Asplund, Martin
Tenenbaum, Emily D
Engelbracht, Charles W
Gordon, Karl D
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IOP Publishing
Abstract
We report the discovery of a uniquely large excess of 18O in the hydrogen-deficient carbon (HdC) star HD 137613 based on a spectrum of the first-overtone bands of CO at 2.3-2.4 μm in which three strong absorption bands of 12C 18O are clearly present. Ban
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Astrophysical Journal, The
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2037-12-31
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