Calibration of the pre-main sequence RS Chamaleontis binary system
نویسندگان
چکیده
منابع مشابه
Lithium Depletion Boundary in a Pre-main Sequence Binary System
A lithium depletion boundary is detected in HIP 112312 (GJ 871.1 A and B), a ∼ 12 Myr old pre-main sequence binary system. A strong (EW≈ 300 mÅ) Li 6708 Å absorption feature is seen at the secondary (∼M4.5) while no Li 6708 Å feature is detected from the primary (∼M4). The physical companionship of the two stars is confirmed from common proper motions. Current theoretical pre-main sequence evol...
متن کاملKH 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 کاملBinary Masses as a Test for Pre–Main-Sequence Tracks
Observations of binaries have traditionally provided the means for ascertaining stellar masses. Here, we use the published data on 8 pre–main-sequence pairs to gauge the accuracy of our own, recently calculated, evolutionary tracks (Palla & Stahler 1999). We consider both eclipsing, double-lined spectroscopic binaries, which provide the mass of each star separately, and non-eclipsing, double-li...
متن کاملEvidence for giant interacting coronal streamers in a pre-main-sequence binary system
Here we report on the VLBI discovery of solar-like extended streamers anchored on the two weak-line T Tauri stars of the binary system V773 Tau A. Covering the interbinary distance the ∼ 20 stellar radii extended streamers enter in collision during each stellar rotation with consequent occurrence of magnetic reconnection. Thermal electrons confined in the streamers become accelerated to relativ...
متن کاملThe Multiple Pre-Main Sequence System HBC 515 in L1622
The bright pre-main sequence star HBC 515 (HD 288313) located in the L1622 cometary cloud in Orion has been studied extensively with optical/infrared imaging and ultraviolet/optical/infrared spectroscopy. The spectra indicate that HBC 515 is a weakline T Tauri star of spectral type K2V. Adaptive optics imaging in the K-band reveals that HBC 515 is a binary with two equally bright components sep...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2007
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361:20065822