Zobrazeno 1 - 10
of 76
pro vyhledávání: '"Weis, Kerstin"'
Publikováno v:
Res. Notes AAS, 7, 96 (2023)
The evolutionary relationships and mechanisms governing the behavior of the wide variety of luminous stars populating the upper H-R diagram are not well established. Luminous blue variables (LBVs) are particularly rare, with only a few dozen identifi
Externí odkaz:
http://arxiv.org/abs/2305.11687
Autor:
Müller, Ancla, Frohn, Vanessa, Dirks, Lukas, Stein, Michael, Adebahr, Björn, Bomans, Dominik J., Weis, Kerstin, Dettmar, Ralf-Jürgen
Publikováno v:
A&A 670, A130 (2023)
AT 2000ch is a highly variable massive star and supernova imposter in NGC 3432 first detected in 2000. It is similar and often compared to SN 2009ip, and it is therefore expected to undergo a core-collapse supernova -- a SN imposter of similar bright
Externí odkaz:
http://arxiv.org/abs/2211.15706
Autor:
Baalmann, Lennart R., Scherer, Klaus, Kleimann, Jens, Fichtner, Horst, Bomans, Dominik J., Weis, Kerstin
Publikováno v:
A&A 650, A36 (2021)
Context. While the shapes of many observed bow shocks can be reproduced by simple astrosphere models, more elaborate approaches have recently been used to explain differing observable structures. Aims. By placing perturbations of an otherwise homogen
Externí odkaz:
http://arxiv.org/abs/2104.03748
Autor:
Weis, Kerstin, Bomans, Dominik J.
Publikováno v:
galaxies 08, 20 (2020)
Luminous Blue Variables are massive evolved stars, here we introduce this outstanding class of objects. Described are the specific characteristics, the evolutionary state and what they are connected to other phases and types of massive stars. Our cur
Externí odkaz:
http://arxiv.org/abs/2009.03144
We present HR Diagrams for the massive star populations in M31 and M33 including several different types of emission-line stars: the confirmed Luminous Blue Variables (LBVs), candidate LBVs, B[e] supergiants and the warm hypergiants. We estimate thei
Externí odkaz:
http://arxiv.org/abs/1707.01916
In this series of papers we have presented the results of a spectroscopic survey of luminous and variable stars in the nearby spirals M31 and M33. In this paper, we present spectroscopy of 132 additional luminous stars, variables, and emission line o
Externí odkaz:
http://arxiv.org/abs/1611.07986
Smith and Tombleson (2015) asserted that statistical tests disprove the standard view of LBVs, and proposed a far more complex scenario to replace it. But Humphreys et al. (2016) showed that Smith and Tombleson's Magellanic "LBV" sample was a mixture
Externí odkaz:
http://arxiv.org/abs/1608.02007
In a recent paper, Smith and Tombleson (2015) state that the Luminous Blue Variables (LBVs) in the Milky Way and the Magellanic Clouds are isolated; that they are not spatially associated with young O-type stars. They propose a novel explanation that
Externí odkaz:
http://arxiv.org/abs/1603.01278
Autor:
Scherer, Klaus, Fichtner, Horst, Kleimann, Jens, Wiengarten, Tobias, Bomans, Dominik J., Weis, Kerstin
Publikováno v:
A&A 586, A111 (2016)
The interaction between a supersonic stellar wind and a (super-)sonic interstellar wind has recently been viewed with new interest. We here first give an overview of the modeling, which includes the heliosphere as an example of a special astrosphere.
Externí odkaz:
http://arxiv.org/abs/1512.01089
Autor:
Scherer, Klaus, van der Schyff, Ausgusts, Bomans, Dominik, Ferreira, Stefan, Fichtner, Horst, Kleimann, Jens, Strauss, Dutoit, Weis, Kerstin, Wiengarten, Tobias, Wodzinski, Thomas
Publikováno v:
A&A 576, A97 (2015)
Cosmic rays passing through large astrospheres can be efficiently cooled inside these "cavities" in the interstellar medium. Moreover, the energy spectra of these energetic particles are already modulated in front of the astrospherical bow shocks. We
Externí odkaz:
http://arxiv.org/abs/1502.04277