Discovery of the high--ionization emission line [Ne V] 3426 in the blue   compact dwarf galaxy Tol 1214-277
  The discovery of the high-ionization [Ne V] 3426A emission line in the spectrum of the blue compact dwarf (BCD) galaxy Tol 1214-277 is reported. The detection of this line implies the presence of intense ionizing X-ray emission with a luminosity in the range 10^39-10^40 erg/s. Such a high X-ray luminosity cannot be reproduced by models of massive stellar populations. Other mechanisms, such as fast shocks or accretion of gas in high-mass X-ray binaries need to be invoked to account for the high intensity of the [Ne V] 3426A emission line. 
Y. I. Izotov (1), K. G. Noeske (2)(3), N. G. Guseva (1), P. Papaderos   (2), T. X. Thuan (4), K. J. Fricke (2) ((1) Main Ast...