Browsing Articles by Subject "Circumstellar matter"

Now showing items 1-9 of 9

An atlas of far-ultraviolet spectra of the Zeta Aurigae binary 31 Cygni with line identifications

Hagen Bauer, Wendy; Bennett, Philip Desmond, 1952- (IOP Publishing, 2014-04)

The ζ Aurigae system 31 Cygni (K4 Ib + B4 V) was observed by the FUSE satellite during total eclipse and at three phases during chromospheric eclipse. We present the coadded, calibrated spectra and atlases with line ...
Destruction of massive fragments in protostellar disks and crystalline silicate production

Vorobyov, Eduard I. (IOP Publishing, 2011-02-20)

We present a mechanism for the crystalline silicate production associated with the formation and subsequent destruction of massive fragments in young protostellar disks. The fragments form in the embedded phase of star ...
Embedded protostellar disks around (sub-)solar stars. II. Disk masses, sizes, densities, temperatures, and the planet formation perspective

Vorobyov, Eduard I. (IOP Publishing Limited, 2011-03-10)

We present basic properties of protostellar disks in the embedded phase of star formation (EPSF), which is difficult to probe observationally using available observational facilities. We use numerical hydrodynamics simulations ...
The [gamma]-ray binary LS 5039: mass and orbit constraints from MOST observations

Sarty, Gordon E.; Szalai, Tamas; Kiss, Laszlo L.; Matthews, Jaymie M.; Wu, Kinwah; Kuschnig, Rainer; Guenther, David B.; Moffat, Anthony F. J.; Rucinski, Slavek M.; Sasselov, Dimitar (Wiley-Blackwell, 2011-02)

The results of a coordinated space-based photometric and ground-based spectroscopic observing campaign on the enigmatic γ-ray binary LS 5039 are reported. 16 d of observations from the MOST satellite have been combined ...
HR 5907: discovery of the most rapidly rotating magnetic early B-type star by the MiMeS collaboration

Guenther, David B.; Grunhut, J. H.; Rivinius, Th.; Wade, G. A.; Townsend, R. H. D.; Marcolino, W. L. F.; Bohlender, D. A.; Szeifert, Th.; Petit, V.; Matthews, J. M. (Oxford University Press, 2012-01)

We report the discovery and analysis of a very strong magnetic field in the rapidly rotating early B-type star HR 5907, based on observations obtained as part of the Magnetism in Massive Stars (MiMeS) project. We infer a ...
MOST observations of [sigma] Ori E: challenging the centrifugal breakout narrative

Guenther, David B.; Townsend, R. H. D.; Rivinius, Th.; Rowe, J. F.; Moffat, A. F. J.; Matthews, J. M.; Bohlender, D.; Neiner, C.; Telting, J. H.; Kallinger, T. (American Astronomical SocietyIOP Science, 2013-05-20)

We present results from three weeks’ photometric monitoring of the magnetic helium-strong star [sigma] Ori E using the Microvariability and Oscillations of Stars microsatellite. The star’s light curve is dominated by ...
Near-infrared speckle interferometry and radiative transfer modelling of the carbon star LP Andromedae

Men'shchikov, A. B.; Balega, Y. Y.; Berger, M.; Driebe, T.; Hofmann, K.-H.; Maximov, A. F.; Schertl, D.; Shenavrin, V. I.; Weigelt, G. (European Southern ObservatoryEDP Sciences, 2006-03)

We present the near-infrared speckle interferometry for LP And in the H and K’ bands with diffraction-limited resolutions of 56 and 72 mas, new JHKLM photometry, and the results of our radiative transfer modelling of this ...
Properties of galactic B[e] supergiants III. MWC 300

Men'shchikov, A. B.; Miroshnichenko, A. S.; Levato, H.; Bjorkman, K. S.; Grosso, M.; Manset, N.; Rudy, R. J.; Lynch, D. K.; Mazuk, S.; Venturini, C. C. (European Southern ObservatoryEDP Sciences, 2004-04)

We present the results of optical and near-IR spectroscopic and mid-IR imaging observations of the emission-line star MWC 300. Its properties and evolutionary state are still under debate (a B[e] supergiant or a Herbig Be ...
Properties of galactic B[e] supergiants V. Two-dimensional radiative transfer model of RY Sct and its dusty disc

Men'shchikov, A. B.; Miroshnichenko, A. S. (European Southern ObservatoryEDP Sciences, 2005-11)

We present results of the first two-dimensional radiative transfer modelling of the eclipsing binary RY Sct and its dusty disc. Assuming an effective temperature T[subscript *] = 27 000 K for both components and the distance ...