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Abundance analyses of cool extreme helium stars Gajendra Pandey,1P
 

Summary: Abundance analyses of cool extreme helium stars
Gajendra Pandey,1P
N. Kameswara Rao,2
David L. Lambert,1
C. Simon Jeffery3
and
Martin Asplund4
1
Department of Astronomy, University of Texas, Austin, TX 78712-1083, USA
2
Indian Institute of Astrophysics, Bangalore 560034, India
3
Armagh Observatory, College Hill, Armagh BT61 9DG
4
Astronomiska Observatoriet, Box 515, S-751 20 Uppsala, Sweden
Accepted 2001 January 25. Received 2001 January 24; in original form 2000 October 26
A B S T R AC T
Extreme helium stars (EHes) with effective temperatures from 8000 to 13 000 K are among
the coolest EHes and overlap the hotter R CrB stars in effective temperature. The cool EHes
may represent an evolutionary link between the hot EHes and the R CrB stars. Abundance

  

Source: Armagh Observatory
Jeffery, Simon - Armagh Observatory

 

Collections: Physics