The Unique Eclipsing System KH 15D: New Photometric Data

Abstract

We present results of the photometric observations of the young eclipsing binary KH 15D obtained during the two observational seasons of 2002-2004 years. A comparison of our data with those by Hamilton et al. (2001) and Herbst et al. (2002) reveals an existence of the long-term photometrical brightness trend: during 5 years a system brightness in the I band decreased by about one stellar magnitude. It is also shown that a systematic change of the eclipse parameters found by Herbst et al. (2002) is continuing up to now. The shape of the light curve did not change essentially and is characterized with a small brightening in the central part of the eclipses. The results obtained are discussed in the context of the current models of KH 15D.

7 pages, 3 figures, Accepted by Astrophysics

References in corpus (5)

• Eclipses by a Circumstellar Dust Feature in the Pre-Main Sequence Star KH15D
• Fine Structure in the Circumstellar Environment of a Young, Solar-like Star: the Unique Eclipses of KH 15D
• Natural Coronagraphic Observations of the Eclipsing T Tauri System KH 15D: Evidence for Accretion and Bipolar Outflow in a WTTS
• Limits on eclipses of the pre-main-sequence star KH 15D in the first half of the 20th century
• Spectroscopy of Molecular Hydrogen Emission from KH 15D

Cited by in corpus (3)

• The Orbit and Occultations of KH 15D
• Complex Variability of the H$\alpha$ Emission Line Profile of the T Tauri Binary System KH 15D: The Influence of Orbital Phase, Occultation by the Circumbinary Disk, and Accretion Phenomenae
• Near-Infrared Photometric Monitoring of a Pre-Main-Sequence Object KH 15D