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https://www.aanda.org/articles/aa/ref/2013/09/aa22057-13/aa22057-13.html
Hot subdwarf stars in close-up view - IV. Helium abundances and the 3He isotopic anomaly of...
Astronomy & Astrophysics (A&A) is an international journal which publishes papers on all aspects of astronomy and astrophysics
hot subdwarf starscloseviewivhelium
https://www.aanda.org/articles/aa/ref/2005/15/aa0829/aa0829.html
Kinematics of nearby subdwarf stars | Astronomy & Astrophysics (A&A)
Astronomy & Astrophysics (A&A) is an international journal which publishes papers on all aspects of astronomy and astrophysics
subdwarf starskinematicsnearbyastronomyastrophysics