SIMBAD references

2021MNRAS.501.2677D - Mon. Not. R. Astron. Soc., 501, 2677-2687 (2021/February-3)

New observations of NGC 1624-2 reveal a complex magnetospheric structure and underlying surface magnetic geometry.

DAVID-URAZ A., PETIT V., SHULTZ M.E., FULLERTON A.W., ERBA C., KESZTHELYI Z., SEADROW S. and WADE G.A.

Abstract (from CDS):

NGC 1624-2 is the most strongly magnetized O-type star known. Previous spectroscopic observations of this object in the ultraviolet provided evidence that it hosts a large and dense circumstellar magnetosphere. Follow-up observations obtained with the Hubble Space Telescope not only confirm that previous inference, but also suggest that NGC 1624-2's magnetosphere has a complex structure. Furthermore, an expanded spectropolarimetric time series shows a potential departure from a dipolar magnetic field geometry, which could mean that the strongest field detected at the surface of an O-type star is also topologically complex. This result raises important questions regarding the origin and evolution of magnetic fields in massive stars.

Abstract Copyright: © 2020 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): techniques: polarimetric - stars: early-type - stars: individual: NGC 1624-2 - stars: magnetic field - stars: winds, outflows - ultraviolet: stars

Simbad objects: 6

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