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

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

2008-03-18

arxiv.org/abs/0803.2702v1

AIP Conf.Proc.1010:174-176,2008

Astronomy and Astrophysics

Astrophysics

3 pages, 2 figures, from A Population Explosion: The Nature and Evolution of X-ray Binaries in Diverse Environments

Scientific paper

10.1063/1.2945031

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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