Physics
Scientific paper
Nov 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991aj....102.1816p&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 102, Nov. 1991, p. 1816-1825. Research supported by CNPq of Brazil.
Physics
7
Solar Neighborhood, Stellar Atmospheres, Stellar Physics, Stellar Composition, Stellar Evolution, Stellar Spectrophotometry
Scientific paper
A detailed analysis of the F8 V star Phi(2) Pav is reported. The following atmospheric parameters were found: theta(eff) = 0.84, log g = 3.70, Fe/H = -0.37, and xi = 1.5 km/s. The spectroscopically determined surface gravity is in conflict with that determined from M(bol), though hardly by more than the error limits. The influence of this disagreement on the abundance determined is discussed, and it is concluded that it is small. Phi(2) Pav's membership in the Zeta Her moving group is analyzed, and it is concluded that, despite some marginal evidence of evolutionary and chemical composition similarities among some member stars, the large observational uncertainties do not yet permit a decision with respect to the group's physical existence.
da Silva Loureiro L.
Porto de Mello Gustavo F.
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