• DOI:10.1088/0004-6256/147/6/148
• Corpus ID: 5988857

ABSOLUTE PROPERTIES OF THE ECLIPSING BINARY STAR AP ANDROMEDAE

@article{SandbergLacy2014ABSOLUTEPO,
  title={ABSOLUTE PROPERTIES OF THE ECLIPSING BINARY STAR AP ANDROMEDAE},
  author={Claud H. Sandberg Lacy and Guillermo Torres and Francis C. Fekel and Matthew W. Muterspaugh},
  journal={The Astronomical Journal},
  year={2014},
  volume={147}
}

• Claud H. Sandberg Lacy, G. Torres, +1 author M. Muterspaugh
• Published 2 April 2014
• Physics
• The Astronomical Journal

AP And is a well-detached F5 eclipsing binary star for which only a very limited amount of information was available before this publication. We have obtained very extensive measurements of the light curve (19,097 differential V magnitude observations) and a radial velocity curve (83 spectroscopic observations) which allow us to fit orbits and determine the absolute properties of the components very accurately: masses of 1.277 ± 0.004 and 1.251 ± 0.004 M☉, radii of 1.233 ± 0.006 and 1.1953 ± 0.005 R☉, and temperatures of 6565 ± 150 K and 6495 ± 150 K. The distance to the system is about 400 ± 30 pc. Comparison with the theoretical properties of the stellar evolutionary models of the Yonsei–Yale series of Yi et al. shows good agreement between the observations and the theory at an age of about 500 Myr and a slightly sub-solar metallicity.