Resumen

TREJO, A.  y  RODRIGUEZ, L. F.. On the distance to the bright nonthermal radio sources in the direction of an extraordinarily massive cluster of red supergiants. Rev. mex. astron. astrofis [online]. 2006, vol.42, n.2, pp.147-151. ISSN 0185-1101.

An extraordinarily massive cluster of red supergiants has been recently reported in the direction of the galactic coordinates l = 25.°3; b = −0°.2. This cluster is associated with an X-ray source, a very high-energy γ-ray source, and three bright non-thermal radio sources. The a priori probability of these associations being only line-of-sight coincidences is very small. However, we have analyzed VLA archive data taken toward these three radio sources and find from their H I absorption spectra that they are extragalactic and thus not directly associated with the galactic cluster.

Palabras llave : RADIO CONTINUUM [GALAXIES]; STARS [SUPERGIANTS].

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