Pandey, G; Kameswara Rao, N; Lambert, D. L; Jeffery, C. S; Asplund, M
(Royal Astronomical Society, 2001-07)
Extreme helium stars (EHes) with effective temperatures from 8000 to 13000K are among the coolest EHes and overlap the hotter R CrB stars in effective temperature. The cool EHes may represent an evolutionary link between ...