Zobrazeno 1 - 10
of 75
pro vyhledávání: '"Jarvinen, S."'
Autor:
Hubrig, S., Schöller, M., Jarvinen, S. P., Cikota, A., Abdul-Masih, M., Escorza, A., Jayaraman, R.
Publikováno v:
A&A 686, L4 (2024)
Studies of the magnetic characteristics of massive stars have recently received significant attention because they are progenitors of highly magnetised compact objects. Stars initially more massive than about 8M_sun leave behind neutron stars and bla
Externí odkaz:
http://arxiv.org/abs/2405.20076
Context. In chemically peculiar Ap/Bp stars with large-scale organised magnetic fields with a simple centred dipole configuration, the ratio between the maximum and the minimum of the mean magnetic field modulus is of the order of 1.25. Values of 2 o
Externí odkaz:
http://arxiv.org/abs/2405.11594
Numerous delta Sct and gamma Dor pulsators are identified in the region of the Hertzsprung-Russell diagram that is occupied by chemically peculiar magnetic Ap stars. The connection between delta Sct and gamma Dor pulsations and the magnetic field in
Externí odkaz:
http://arxiv.org/abs/2308.09441
Although significant progress has been achieved in recent surveys of the magnetism in massive stars, the origin of the detected magnetic fields remains to be the least understood topic in their studies. We present an analysis of 61 high-resolution sp
Externí odkaz:
http://arxiv.org/abs/2303.14791
We present the results of high-resolution spectropolarimetric observations of the optically dominant component in the rare hydrogen-deficient binary system upsilon Sgr. Only a small number of such systems in a very late phase of helium shell burning
Externí odkaz:
http://arxiv.org/abs/2206.12813
We present the first short time scale observations of the roAp star gamma Equ in linear polarized light obtained with the PEPSI polarimeter installed at the LBT. These observations are used to search for pulsation variability in Stokes Q and U line p
Externí odkaz:
http://arxiv.org/abs/2108.11272
Magnetic fields in Wolf-Rayet (WR) stars are not well explored, although there is indirect evidence, e.g. from spectral variability and X-ray emission, that magnetic fields should be present in these stars. Being in an advanced stage of their evoluti
Externí odkaz:
http://arxiv.org/abs/2010.00983
Autor:
Schöller, M., Hummel, C. A., Hubrig, S., Kurtz, D. W., Mathys, G., Robrade, J., Jarvinen, S. P.
Publikováno v:
A&A 642, A188 (2020)
The Bp star HD94660 is a single-lined spectroscopic binary. Some authors have suggested that the unseen companion of at least 2M_sun may be a compact object. We intend to study this multiple system in detail, especially to learn more about the so-far
Externí odkaz:
http://arxiv.org/abs/2009.07060
Autor:
Hubrig, S., Jarvinen, S. P., Korhonen, H., Ilyin, I., Schöller, M., Niemczura, E., Chojnowski, S. D.
The main-sequence mercury-manganese (HgMn) stars are known to exhibit large overabundances of exotic elements and, similar to magnetic Ap/Bp stars, are spectrum variables, implying the presence of an inhomogeneous element distribution over the stella
Externí odkaz:
http://arxiv.org/abs/2004.08880
The first FORS2 spectropolarimetric observation of the longitudinal magnetic field of HD54879 of the order of -600G with a lower limit of the dipole strength of ~2kG dates back to 2014. Since then observations showed a gradual decrease of the absolut
Externí odkaz:
http://arxiv.org/abs/1910.13209