Astron. Astrophys. 347, 550-555 (1999)

4. Conclusions

The present spectroscopic study shows a CaII K&H emission core variability for HD 112989. In addition, the UBV photometric results confirm a variable brightness, showing also events which seems to indicate the existence of flares on this star. The somewhat high rotational velocity of about 11.0 kms^-1 is unusual for its spectral type. The radial velocity spectroscopic measurements show no variability, indicating a single status for HD 112989. Finally, an analysis of its evolutionary behavior shows that this star is very probably an intermediate-mass giant evolving after the base of the RGB. This is in agreement with the well-mixed behavior inferred from the observed surface abundances.

© European Southern Observatory (ESO) 1999

Online publication: June 30, 1999
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