ORBITAL MOTION IN PRE-MAIN SEQUENCE BINARIES

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Pre - main sequence binaries with aligned disks ?

We present the results of a study performed with the goal to investigate whether low-mass pre-main sequence binary stars are formed by multiple fragmentation or via stellar capture. If binaries form preferentially by fragmentation, we expect their disks to be co-planar. On the other hand, the capture scenario will lead to a random distribution of disk orientations. We performed near-infrared po...

متن کامل

Low Mass X-ray Binaries with Pre-main Sequence Companions

In this Letter we examine the idea that a subset of short-period black-hole low-mass X-ray binaries could be powered by the mass transfer from pre-main sequence donors. As the star contracts towards the main sequence, the strong magnetic fields operate the magnetic braking which dissipates the orbital angular momentum, driving the binary to contact. We show that the periods and apparent donor s...

متن کامل

Detection of Pre-main-sequence Binaries Using Spectro-astrometry

The technique of spectro-astrometry (measuring wavelength dependence of the position of an object) has been used to observe a number of pre-main-sequence stars. Several previously known binaries with separations down to 100 milli-arcseconds (mas) were easily detected in these observations by the presence of a broad feature in the position spectrum on the H line. The observations show that T CrA...

متن کامل

On the luminosity ratio of pre-main sequence binaries

Assuming random pairing of single stars from the same fundamental IMF as a good scenario for pre-main sequence binary formation, we show how to derive the mass ratio distribution and the fundamental IMF from the observational luminosity ratio distribution, taking into account pre-main sequence evolution. We also determine how the detectability of a brown dwarf as a companion relates to its own ...

متن کامل

Pre - main sequence spectroscopic binaries suitable for VLTI observations ⋆

Context. A severe problem of the research in star-formation is that the masses of young stars are almost always estimated only from evolutionary tracks. Since the tracks published by different groups differ, it is often only possible to give a rough estimate of the masses of young stars. It is thus crucial to test and calibrate the tracks. Up to now, only a few tests of the tracks could be carr...

متن کامل

ذخیره 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: The Astronomical Journal

سال: 2014

ISSN: 0004-6256,1538-3881

DOI: 10.1088/0004-6256/147/6/157