Analysis and Modeling of Eclipsing Binary AI Hydrae

Details Analysis and Modeling of Eclipsing Binary AI Hydrae Analysis and Modeling of Eclipsing Binary AI Hydrae

Jan 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21714404v&link_type=abstract

American Astronomical Society, AAS Meeting #217, #144.04; Bulletin of the American Astronomical Society, Vol. 43, 2011

Astronomy and Astrophysics

Astronomy

Scientific paper

AI Hydrae is an F-type detached eclipsing binary that we know a considerable amount about. In 1988, Popper analyzed light curves and spectra of AI Hydrae to determine parameters such as the spectral type, period, orbital eccentricity, systemic velocity, and argument of periastron. We have retaken photometry of the system using the Four College Automated Photoelectric Telescope and acquired echelle spectra with the 2.1 and 4 meter telescopes at Kitt Peak National Observatory, both located in Arizona. We reduced the echelle spectra using IRAF to remove the cosmic rays in the data, perform wavelength calibration, and measure the Doppler shifts of the spectral lines to obtain radial velocity curves. After reducing the spectroscopic data we simultaneously analyzed the radial velocities with the light curves for AI Hydrae to compare those results with the previous values from the literature. With this analysis, we aim to reduce the error margin of the system's physical parameters such as masses, luminosities, radii, and velocities, and consequently, further calibrate the mass-luminosity relationship. This poster presents preliminary results of our analysis and modeling based on our acquired data. We gratefully acknowledge NSF/RUI grant AST-05-07542.

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