英仙座DY型變星
英仙座DY型變星是北冕座R型變星 (RCB) 的子分類。它們是在漸近巨星分支 (AGB恆星) 中富含碳，顯示出是脈動變星和不規則的北冕座R型變星。
英仙座DY 是這一類型變星的原型。
參考資料 编辑
Alcock, C. and Allsman, R.A. and Alves, D.R. and Axelrod, T.S. and Becker, A. and Bennett, D.P. and Clayton, G.C. and Cook, K.H. and Dalal, N. and Drake, A.J. and Freeman, K.C. and Geha, M. and Gordon, K.D. and Griest, K. and Kilkenny, D. and Lehner, M.J. and Marshall, S.L. and Minniti, D. and Misselt, K.A. and Nelson, C.A. and Peterson, B.A. and Popowski, P. and Pratt, M.R. and Quinn, P.J. and Stubbs, C.W. and Sutherland, W. and Tomaney, A. and Vandehei, T. and Welch, D.L.,. The MACHO Project LMC Variable Star Inventory. X. The R Coronae Borealis Stars. Astrophysical Journal (Provided by the Smithsonian/NASA Astrophysics Data System). June 2001, 554 (1): 298–315,. Bibcode:2001ApJ...554..298A. arXiv:astro-ph/0102262 . doi:10.1086/321369.