Publications (1)0 Total impact
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William Herbst,
Catrina M. Hamilton,
Frederick J. Vrba,
Mansur A. Ibrahimov,
Coryn A. L. Bailer-Jones,
Reinhard Mundt,
Markus Lamm,
Tsevi Mazeh,
Zodiac T. Webster, Karl E. Haisch,
Eric C. Williams,
Andrew H. Rhodes,
Thomas J. Balonek,
Alexander Scholz,
Arno Riffeser
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ABSTRACT: Results of an international campaign to photometrically monitor the unique pre-main sequence eclipsing object KH 15D are reported. An updated ephemeris for the eclipse is derived that incorporates a slightly revised period of 48.36 d. There is some evidence that the orbital period is actually twice that value, with two eclipses occurring per cycle. The extraordinary depth (~3.5 mag) and duration (~18 days) of the eclipse indicate that it is caused by circumstellar matter, presumably the inner portion of a disk. The eclipse has continued to lengthen with time and the central brightness reversals are not as extreme as they once were. V-R and V-I colors indicate that the system is slightly bluer near minimum light. Ingress and egress are remarkably well modeled by the passage of a knife-edge across a limb-darkened star. Possible models for the system are briefly discussed. Comment: 19 pages, 5 figures
08/2002;
