Moving inhomogeneous envelopes of stars

0470024 - ASÚ 2017 RIV GB eng J - Článek v odborném periodiku
Oskinova, L.M. - Kubátová, Brankica - Hamann, W.-R.
Moving inhomogeneous envelopes of stars.
Journal of Quantitative Spectroscopy and Radiative Transfer. Roč. 183, Special Issue (2016), s. 100-112. ISSN 0022-4073. E-ISSN 1879-1352.
[International Conference on Radiation Mechanisms of Astrophysical Objects - Classics Today. St. Petersburg, 21.09.2016-25.09.2016]
Institucionální podpora: RVO:67985815
Klíčová slova: stars * mass-loss * winds
Kód oboru RIV: BN - Astronomie a nebeská mechanika, astrofyzika
Impakt faktor: 2.419, rok: 2016

Massive stars are extremely luminous and drive strong winds, blowing a large part of their matter into the galactic environment before they finally explode as a supernova. Quantitative knowledge of massive star feedback is required to understand our Universe as we see it. Traditionally, massive stars have been studied under the assumption that their winds are homogeneous and stationary, largely relying on the Sobolev approximation. However, Observations with the newest instruments, together with progress in model calculations, ultimately dictate a cardinal change of this paradigm: stellar winds are highly inhomogeneous. Hence, we are now advancing to a new stage in our understanding of stellar winds. Using the foundations laid by V.V. Sobolev and his school, we now update and further develop the stellar spectral analysis techniques. New sophisticated 3-D models of radiation transfer in inhomogeneous expanding media elucidate the physics of stellar winds and improve classical empiric mass-loss rate diagnostics. Applications of these new techniques to multiwavelength observations of massive stars yield consistent and robust stellar wind parameters.
Trvalý link: http://hdl.handle.net/11104/0267762