Magnetic fields around late-type stars using water maser observations
| dc.creator | Vlemmings, W. H. T. | |
| dc.creator | van Langevelde, H. J. | |
| dc.creator | Diamond, P. J. | |
| dc.date | 2005-07-11 | |
| dc.date.accessioned | 2026-07-07T02:18:15Z | |
| dc.date.available | 2026-07-07T02:18:15Z | |
| dc.description | We present the analysis of the circular polarization, due to Zeeman splitting, of the water masers around a sample of late-type stars to determine the magnetic fields in their circumstellar envelopes. The magnetic field strengths in the water maser regions around the Mira variable stars U Ori and U Her are shown to be several Gauss while those of the supergiants S Per, NML Cyg and VY CMa are several hundred mG. We also show that large scale magnetic fields permeate the CSE of an evolved star; the polarization of the water masers around VX Sgr reveals a dipole field structure. We shortly discuss the coupling of the magnetic field with the stellar outflow, as such fields could possibly be the cause of distinctly aspherical mass-loss and the resulting aspherical planetary nebulae. | |
| dc.description | to appear in the porceedings of the "Stellar End Products" workshop, 13-15 April 2005, Granada, Spain (for publication in MmSAI vol.77). 5 pages, 3 figures | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0507258 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0507258 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/9413 | |
| dc.subject | Astrophysics | |
| dc.title | Magnetic fields around late-type stars using water maser observations | |
| dc.type | text |