Differential Corrections Analysis of the UBVRI Observations of AG Phoenicis

Details Differential Corrections Analysis of the UBVRI Observations of AG Phoenicis Differential Corrections Analysis of the UBVRI Observations of AG Phoenicis

Oct 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aca....46..429c&link_type=abstract

Acta Astronomica, v.46, pp.429-446, (1996).

Astronomy and Astrophysics

Astronomy

3

Binaries: Eclipsing, Binaries: Close, Stars: Individual: Ag Phe

Scientific paper

The first photoelectric analysis of the Algol-like system AG Phe based on U, B, V, R and I light curves and modeled using the Wilson and Devinney approach, is presented. The light curves are defined by 9246 individual observations. The components and the orbit appears to be stable. The primary, more massive, more luminous and greater component, eclipsed (total transit) at primary minimum, is detached from its Roche lobe (79%). The secondary nearly fills its Roche lobe (99%) and has a temperature difference of Delta T=-3310 K. Preliminary derived absolute dimensions M_1/Modot=1.42, R_1/Rodot=1.66, L_1/Lodot=7.83, log g_1=4.15 assign normal MS characteristics and a low degree of evolution to the A8V primary, while M_2/M&sun;=0.22, R_2/Rodot=0.93, L_2/Lodot=0.29, log g_2=3.84 suggest an evolved K2 sub-giant secondary.

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