Results 11 to 20 of about 16,383,351 (149)

The Be star o Cas is indeed the primary of a triple system

Astronomy & Astrophysics
Analysis of radial velocities of two narrow absorption components in the Mg II 4481 Å line demonstrated that the secondary of the Be star o Cas is indeed a close binary system composed of two B7 stars orbiting each other with a period of 11.″6604 11
Harmanec P., Yang S., Šlechta M., Grundstrom E. D., Ribeiro J., Harmanec A.   +5 more
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Hα observations of the Be/X-ray binary MWC 656

Astronomy & Astrophysics
Context. MWC 656 is a Be/X-ray binary identified as an emission-line object, X-ray and radio source and might be a weak γ-ray source, harbouring an enigmatic secondary component. Aims.
Zamanov R., Marchev V., Stoyanov K. A., Christova M. D., Minev M., Moyseev M., Marchev D., Martí J., Bode M. F., Markishki P., Stefanov S.   +10 more
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Population synthesis of Be X-ray binaries in the Small Magellanic Cloud: Angular momentum recycling and stable mass transfer

Astronomy & Astrophysics
Be X-ray binaries (BeXRBs) are key laboratories for constraining binary interaction processes such as mass transfer, angular-momentum transport, and natal kicks.
López Oller Víctor, Liu Boyuan, Mapelli Michela, Rinaldi Stefano, Sgalletta Cecilia, Bodensteiner Julia, Iorio Giuliano, Schupp Rebekka   +7 more
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Studying the UV Mg II Resonance Lines in 20 Be Stars

Open Astronomy, 2011
Using the GR model, we analyze the UV Mg II resonance lines in the spectra of 20 Be stars of different spectral subtypes, in order to detect the presence of satellite or discrete absorption components. The values of some physical parameters – rotational,
Antoniou A., Stathopoulos D., Danezis E., Lyratzi E.   +3 more
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Taking the Next Steps in Endoscopic Visual Assessment of Barrett’s Esophagus: A Pilot Study

Clinical and Experimental Gastroenterology, 2021
Roxana Chis,1 Simon Hew,2 Wilma Hopman,3 Lawrence Hookey,2 Robert Bechara2 1Division of Internal Medicine, Kingston Health Sciences Centre, Queen’s University, Kingston, Ontario, Canada; 2Division of Gastroenterology, Kingston Health Sciences ...
Chis R, Hew S, Hopman W, Hookey L, Bechara R   +4 more
doaj  

TB GENOMICS FOR PUBLIC HEALTH

International Journal of Infectious Diseases, 2023
Mycobacterium tuberculosis complex (MTBC), the causative organisms of tuberculosis (TB), has afflicted man for millennia. TB was declared a global health emergency by the World Health Organization in 1993.
Cynthia BE Chee
doaj   +1 more source

HR6819: a puffed-up stripped star system challenging stable mass transfer theory

Astronomy & Astrophysics
Context. HR6819 is the first system with a puffed-up low-mass stripped star + a classical Be star whose nature has been confirmed by optical interferometry.
Picco A., Marchant P., Sana H., Bodensteiner J., Shenar T., Frost A. J., Deshmukh K., Mombarg J. S. G., Pauli D., Willcox R., Kemp A.   +10 more
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Orbital motion detected in γ Cas Fe K emission lines

Astronomy & Astrophysics
A subset of Be stars, typified by the naked-eye star γ Cas, exhibits unusually bright and hard X-ray emission, the origin of which has remained debated for five decades.
Nazé Yaël, Tsujimoto Masahiro, Rauw Gregor, Gunderson Sean J.   +3 more
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Ultraviolet spectroscopy reveals a hot and luminous companion to the Be star+black hole candidate MWC 656

Astronomy & Astrophysics
The Galactic Be star binary MWC 656 was long considered the only known Be star+black hole (BH) system, making it a critical benchmark for models of massive binary evolution and for the expected X-ray emission of Be+BH binaries.
Müller-Horn Johanna, Ramachandran Varsha, El-Badry Kareem, Sander Andreas A. C., Bodensteiner Julia, Gies Douglas R., Götberg Ylva, Rivinius Thomas, Shenar Tomer, Schösser Elisa C., Wang Luqian, Bieryla Allyson, Buchhave Lars A., Latham David W.   +13 more
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A Statistical Study of the Si IV Resonance Line Parameters in 19 Be Stars

Open Astronomy, 2011
Using the GR model, we analyze the ultraviolet Si IV resonance lines in the spectra of 19 Be stars of different spectral subtypes, in order to detect the presence of absorption components and to analyze their characteristics.
Antoniou A., Danezis E., Lyratzi E., Stathopoulos D., Dimitrijević M. S.   +4 more
doaj   +1 more source