Eight more ultra luminous X-ray candidates unmasked
Aims:We aim to identify the nature of several objects previously catalogued as ultra-luminous X-ray (ULX) source candidates. Methods: Long-slit spectroscopy of the optical counterparts has been carried out. Results: The eight objects are at higher redshift than their putative parent galaxies. Conclusions: It is found that these eight previously
Gutiérrez, C. M. et al.
Fecha de publicación:
9
2007