Monitoring MWC 560 ≡ V 694 Monocerotis in 1990-1995
نویسندگان
چکیده
منابع مشابه
Detection of X - rays from the jet - driving Symbiotic Star MWC 560
Aims. We report the detection of X-ray emission from the jet-driving symbiotic star MWC 560. Methods. We observed MWC 560 with XMM-Newton for 36 ks. We fitted the spectra from the EPIC pn, MOS1 and MOS2 instruments with XSPEC and examined the light curves with the package XRONOS. Results. The spectrum can be fitted with a highly absorbed hard X-ray component from an optically-thin hot plasma, a...
متن کاملSpectral study of MWC 560 . Parameters of the system , the hot source and the jets
Results of spectroscopy of unusual symbiotic variable star MWC560 are presented. The data have been obtained from autumn 1990 to spring 1993. High velocity absorption lines of H I, D1 D2 Na I, Fe II(42) and He I are permanently presented in the spectra, their radial velocity is −500 ÷ −2500 km/s and is changed with a time–scale of a few months. The high velocity absorption line profiles demonst...
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هدف اصلی این تحقیق مقایسه و تمایز بین روشها و استراتژیهای خاص برای درک مطلب بهتر در زبان مادری و زبان دوم بوده است. در قدم اول میزان توانایی افراد در درک مطلب فارسی و انگلیسی اندازه گیری و سپس رده بندی شد. همچنین از دانش آموزان خواسته شد که در مورد روشها و استراتژیهایی که برای درک مطلب بهتر به کار برده بودند توضیح دهند. نتیجه این مرحله از تحقیق نشان داد که دانشجویان برای درک مطلب مطلوب در زبان ...
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متن کاملFirst spectra of the W UMa system V 524 Monocerotis ⋆
We present the first high-resolution spectra of the W UMa contact binary V524 Mon. The spectra of the two components are very similar, resembling a G5 and a K0. We find the radial velocities and rotational velocities consistent with corotation. We estimate the radii and the masses and derive a mass ratio M 2 /M 1 = 2.1. We confirm that V524 Mon is a W–type contact system, likely enclosed in a c...
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ژورنال
عنوان ژورنال: Astronomy and Astrophysics Supplement Series
سال: 1997
ISSN: 0365-0138,1286-4846
DOI: 10.1051/aas:1997326