The system of RZ ERI and a new bright eclipsing variable with double-lined spectrum.
نویسندگان
چکیده
منابع مشابه
Discovery of a bright eclipsing cataclysmic variable
Aims. We report on the discovery of J0644+3344, a bright deeply eclipsing cataclysmic variable (CV) binary. Methods. Optical photometric and spectroscopic observations were obtained to determine the nature and characteristics of this CV. Results. Spectral signatures of both binary components and an accretion disk can be seen at optical wavelengths. The optical spectrum shows broad H I, He I, an...
متن کاملThe distance to the Pleiades from orbital solution of the double - lined eclipsing binary HD 23642 ⋆ , ⋆ ⋆
Combining precise B,V photometry and radial velocities, we have been able to derive a firm orbital solution and accurate physical parameters for the newly discovered eclipsing binary HD 23642 in the Pleiades open cluster. The resulting distance to the binary and therefore to the cluster is 132±2 pc. This closely confirms the distance modulus obtained by classical main sequence fitting methods (...
متن کاملthe investigation of the relationship between type a and type b personalities and quality of translation
چکیده ندارد.
the evaluation of language related engagment and task related engagment with the purpose of investigating the effect of metatalk and task typology
abstract while task-based instruction is considered as the most effective way to learn a language in the related literature, it is oversimplified on various grounds. different variables may affect how students are engaged with not only the language but also with the task itself. the present study was conducted to investigate language and task related engagement on the basis of the task typolog...
15 صفحه اولذخیره 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: 1951
ISSN: 0004-6256
DOI: 10.1086/106546