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Astron. Astrophys. 347, 55-62 (1999) AcknowledgementsWe acknowledge CNPq, ANTORCHAS, VITAE, CONICOR and PRONEX/FINEP 76.97.1003.00 for financial support. Thanks to Alberto Rodriguez for providing the spectrum of J 15.22.
© European Southern Observatory (ESO) 1999 Online publication: June 18, 1999 ![]() |