Eight more ultra luminous X-ray candidates unmasked

Bibcode
2007A&A...472...87G
DOI
10.1051/0004-6361:20077513
Gutiérrez, C. M.; López-Corredoira, M.
Referencia bibliográfica

Astronomy and Astrophysics, Volume 472, Issue 1, September II 2007, pp.87-92

Fecha de publicación:
9
2007
Revista
Astronomy and Astrophysics
Número de autores
2
Número de autores del IAC
2
Número de citas
6
Número de citas referidas
6
Descripción
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 catalogued ULX candidates, most of them projected in galactic halos are actually background unrelated objects. This result confirms the high degree of contamination present in current catalogues of ULXs.
Tipo
Con árbitro
Galaxias
Cuásares

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