KH 15D: Gradual Occultation of a Pre-Main-Sequence Binary
نویسندگان
چکیده
منابع مشابه
KH 15D: Gradual Occultation of a Pre–Main-Sequence Binary
We propose that the extraordinary “winking star” KH 15D is an eccentric pre–mainsequence binary that is gradually being occulted by an opaque screen. This model accounts for the periodicity, depth, duration, and rate of growth of the modern eclipses; the historical light curve from photographic plates; and the existing radial velocity measurements. It also explains the re-brightening events tha...
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 کاملLimits on eclipses of the pre-main-sequence star KH 15D in the first half of the 20th century
Over the last decade, the pre-main sequence star KH 15D has exhibited periodic eclipses that are surprisingly deep (∼3 mag) and long-lasting (∼40% of the 48.4-day period). The cause of the eclipses is unknown, but it could be a feature in a nearly edge-on protoplanetary disk. Here we report on an analysis of archival photographs of KH 15D from the Harvard College Observatory plate collection, m...
متن کاملar X iv : a st ro - p h / 03 12 45 8 v 2 2 1 Ja n 20 04 KH 15 D : Gradual Occultation of a Pre – Main - Sequence Binary Joshua
We propose that the extraordinary “winking star” KH 15D is an eccentric pre–mainsequence binary that is gradually being occulted by an opaque screen. This model accounts for the periodicity, depth, duration, and rate of growth of the modern eclipses; the historical light curve from photographic plates; and the existing radial velocity measurements. It also explains the re-brightening events tha...
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...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2004
ISSN: 0004-637X,1538-4357
DOI: 10.1086/383089