The unique eclipsing system KH 15D: New photometric data
نویسندگان
چکیده
منابع مشابه
Spectropolarimetry and Modeling of the Eclipsing T Tauri Star Kh 15d
KH 15D is a strongly variable T Tauri star in the young star cluster NGC 2264 that shows a decrease in flux of 3.5 mag lasting for 18 days and repeating every 48 days. The eclipsing material is likely due to orbiting dust or rocky bodies in a partial ring or warped disk that periodically occults the star. We measured the polarized spectrum in and out of eclipse at the Keck and Palomar observato...
متن کاملThe Orbit and Occultations of Kh 15d
The unusual flux variations of the pre–main-sequence binary star KH 15D have been attributed to occultations by a circumbinary disk. We test whether or not this theory is compatible with newly available data, including recent radial velocity measurements, CCD photometry over the past decade, and photographic photometry over the past 50 years. We find the model to be successful, after two refine...
متن کاملNatural Coronagraphic Observations of the Eclipsing T Tauri System KH 15D: Evidence for Accretion and Bipolar Outflow in a WTTS
We present high resolution (R ∼ 44,000) UVES spectra of the eclipsing premain sequence star KH 15D covering the wavelength range 4780 to 6810 Å obtained at three phases: out of eclipse, near minimum light and during egress. The system evidently acts like a natural coronagraph, enhancing the contrast relative to the continuum of hydrogen and forbidden emission lines during eclipse. At maximum li...
متن کاملKh 15d: a Spectroscopic Binary
We present the results of a high-resolution spectroscopic monitoring program of the eclipsing pre–main-sequence star KH 15D that reveal it to be a single-line spectroscopic binary. We find that the best-fit Keplerian model has a period P = 48.38 days, which is nearly identical to the photometric period. Thus, we find the best explanation for the periodic dimming of KH 15D is that the binary mot...
متن کاملThe Circumbinary Ring of Kh 15d
The light curves of the pre-main-sequence star KH 15D from the years 1913– 2003 can be understood if the star is a member of an eccentric binary that is encircled by a vertically thin, inclined ring of dusty gas. Eclipses occur whenever the reflex motion of a star carries it behind the circumbinary ring; the eclipses occur with period equal to the binary orbital period of 48.4 days. Features of...
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ژورنال
عنوان ژورنال: Astrophysics
سال: 2005
ISSN: 0571-7256,1573-8191
DOI: 10.1007/s10511-005-0001-z