The magnetic early B-type Stars II: stellar atmospheric parameters in the era ofGaia

@article{Shultz2019TheME,
  title={The magnetic early B-type Stars II: stellar atmospheric parameters in the era ofGaia},
  author={Matthew E. Shultz and Gregg A. Wade and Th. Rivinius and Evelyne Alecian and Coralie Neiner and V{\'e}ronique Petit and John P. Wisniewski},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2019}
}
Atmospheric parameters determined via spectral modelling are unavailable for many of the known magnetic early B-type stars. We utilized high-resolution spectra together with NLTE models to measure effective temperatures $T_{\rm eff}$ and surface gravities $\log{g}$ of stars for which these measurements are not yet available. We find good agreement between our $T_{\rm eff}$ measurements and previous results obtained both photometrically and spectroscopically. For $\log{g}$, our results are… Expand

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References

SHOWING 1-10 OF 119 REFERENCES
Surface abundances of light elements for a large sample of early B-type stars – II. Basic parameters of 107 stars
Effective temperatures T e f f , surface gravities log g and interstellar extinctions A v are found for 107 B stars. Distances d of the stars, which are based on the derived T e f f , log g and A vExpand
Searching for links between magnetic fields and stellar evolution: II. The evolution of magnetic fie
Context. The evolution of magnetic fields in Ap stars during the main sequence phase is presently mostly unconstrained by observation because of the difficulty of assigning accurate ages to knownExpand
B fields in OB stars (BOB): Low-resolution FORS2 spectropolarimetry of the first sample of 50 massive stars
Within the context of the collaboration “B fields in OB stars” (BOB), we used the FORS2 low-resolution spectropolarimeter to search for a magnetic field in 50 massive stars, including two referenceExpand
Spectroscopic determination of the fundamental parameters of 66 B-type stars in the field-of-view of the CoRoT satellite
Aims. We determine the fundamental parameters of a sample of B stars with apparent visual magnitudes brighter than 8 in the fieldof-view of the CoRoT space mission, from high-resolution spectroscopy.Expand
Fundamental properties of nearby single early B-type stars
Fundamental parameters of a sample of 26 apparently slowly-rotating single early B-type stars in the solar neighbourhood are presented and compared to high-precision data from detached eclipsingExpand
B fields in OB stars (BOB): on the detection of weak magnetic fields in the two early B-type stars beta CMa and epsilon CMa Possible lack of a "magnetic desert" in massive stars
Only a small fraction of massive stars seem to host a measurable structured magnetic field, whose origin is still unknown and whose implications for stellar evolution still need to be assessed.Expand
Two spotted and magnetic early B-type stars in the young open cluster NGC 2264 discovered by MOST and ESPaDOnS
Star clusters are known as superb tools for understanding stellar evolution. In a quest for understanding the physical o rigin of magnetism and chemical peculiarity in about 7% of the massiveExpand
Discovery of a magnetic field in the early B-type star σ Lupi
Context: Magnetic early B-type stars are rare. Indirect indicators are needed to identify them before investing in time-intensive spectropolarimetric observations. Aims: We use the strongestExpand
The magnetic field and spectral variability of the He-weak star HR 2949
We analyze a high resolution spectropolarimetric dataset collected for the He-weak B3p IV star HR 2949. The Zeeman effect is visible in the circularly polarized component of numerous spectral lines.Expand
Evolutionary state of magnetic chemically peculiar stars
Context. The photospheres of about 5–10% of the upper main sequence stars exhibit remarkable chemical anomalies. Many of these chemically peculiar (CP) stars have a global magnetic field, the originExpand
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