منابع مشابه
X - ray binaries in the star cluster R 136 in the 30 Doradus region
We analyzed archival Chandra X-ray observations of the central portion of the 30 Doradus region in the Large Magellanic Cloud. The image contains 20 X-ray point sources with luminosities between 5× 10 and 2× 10 erg s (0.2 – 3.5 keV). A dozen sources have bright WN Wolf-Rayet or spectral type O stars as optical counterparts. Nine of these are within ∼ 3.4 pc of R 136, the central star cluster of...
متن کامل127-136 R Ergun.indd
Results: Mean age of the study population was 34.7 ± 8.5 and mean duration of work was 16.5 ± 7.9 years. The prevalance of Dental technicians’ pneumoconiosis (DTP) was 11.1%. The most common opacity in HRCT was round opacity with a rate of 89.7%. The rate of large opacity was %14.3. There was positive correlation between ILO score and HRCT score. Negative correlation was found between ILO and H...
متن کاملFormation of massive binaries
The formation of massive stars is one of the major unsolved problems in stellar astrophysics. However, only few if any of these are found as single stars, on average massive stars have more than one companion. Many of them are born in dense stellar clusters and several clusters have an excess of massive short-period spectroscopic binaries, with severe implication for binary-related stellar evol...
متن کاملInteracting Winds in Massive Binaries
Massive stars feature highly energetic stellar winds that interact whenever two such stars are bound in a binary system. The signatures of these interactions are nowadays found over a wide range of wavelengths, including the radio domain, the optical band, as well as X-rays and even γ-rays. A proper understanding of these effects is thus important to derive the fundamental parameters of the com...
متن کاملNon - thermal emission processes in massive binaries ⋆
In this paper, I present a general discussion of several astrophysical processes likely to play a role in the production of non-thermal emission in massive stars, with emphasis on massive binaries. Even though the discussion will start in the radio domain where the non-thermal emission was first detected, the census of physical processes involved in the non-thermal emission from massive stars s...
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ژورنال
عنوان ژورنال: Proceedings of the International Astronomical Union
سال: 2010
ISSN: 1743-9213,1743-9221
DOI: 10.1017/s174392131101115x