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arXiv · 0803.2702

Optical and UV Light Curves of the Accretion Disk Corona Source 4U 1822-371

A. J. Bayless·E. L. Robinson·R. I. Hynes·T. A. Ashcraft·M. E. Cornell
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Abstract

The eclipsing low-mass X-ray binary 4U is the prototypical accretion disk corona (ADC) system. We have obtained new time-resolved UV spectrograms of 4U with the Hubble Space Telescope and new V- and J-band light curves with the 1.3-m SMARTS telescope at CTIO. We present an updated ephemeris for the times of the optical/UV eclipses. Model light curves do not give acceptable fits to the UV eclipses unless the models include an optically-thick ADC.

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A. J. Bayless, E. L. Robinson, R. I. Hynes, T. A. Ashcraft, M. E. Cornell. 2008-03-18. Optical and UV Light Curves of the Accretion Disk Corona Source 4U 1822-371. https://doi.org/10.1063/1.2945031

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