AU Monocerotis-improved elements

Details AU Monocerotis-improved elements AU Monocerotis-improved elements

Mar 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998a%26as..128..441v&link_type=abstract

Astronomy and Astrophysics Supplement, v.128, p.441-445

Astronomy and Astrophysics

Astrophysics

3

Binaries: Eclipsing, Stars: Au Mon, Stars: Fundamental Parameters

Scientific paper

From an analysis, using Wilson-Devinney method, of the corrected yellow light curve of the semi detached eclipsing binary system AU Monocerotis (AU Mon), obtained by \cite[Lorenzi (1980b),]{80b} an improved value for the mass ratio, q, equal to 0.1985 and reliable geometrical elements were derived.They give the absolute elements as: {m_h/m_sun}=5.93+/-0.31; {m_c/m_sun}=1.18+/-0.16; R_h/R_sun=5.28+/-0.16; R_c/R_sun=10.04+/-0.74; Log\ L_h/L_sun=3.16+/-0.14; Log\ L_c/L_sun=2.07+/-0.21; Log\ g_h=3.76+/-0.06; and Log\ g_c=2.51+/-0.02. When compared to main sequence stars of similar mass, the primary is found to have normal luminosity, bigger size and lower temperature while the secondary is found to have higher luminosity, bigger size and normal temperature for their masses. On the HR diagram of the normal main sequence stars, the primary is found to lie near but above the main sequence (brighter by 1fm 4). The secondary component is far above the main sequence and is overluminous by about 4fm 5.

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