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arXiv · 0707.4220

The BOES spectropolarimeter for Zeeman measurements of stellar magnetic fields

Kang-Min Kim·Inwoo Han·Gennady G. Valyavin·Sergei Plachinda·Jeong Gyun Jang·Be-Ho Jang·Hyeon Cheol Seong·Byeong-Cheol Lee·Dong-Il Kang·Byeong-Gon Park·Tae Seog Yoon·Steven S. Vogt
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Abstract

We introduce a new polarimeter installed on the high-resolution fiber-fed echelle spectrograph (called BOES) of the 1.8-m telescope at the Bohyunsan Optical Astronomy Observatory, Korea. The instrument is intended to measure stellar magnetic fields with high-resolution (R $\sim$ 60000) spectropolarimetric observations of intrinsic polarization in spectral lines. In this paper we describe the spectropolarimeter and present test observations of the longitudinal magnetic fields in some well-studied F-B main sequence magnetic stars (m_v < 8.8^m). The results demonstrate that the instrument has a high precision ability of detecting the fields of these stars with typical accuracies ranged from about 2G to a few tens of gauss.

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Kang-Min Kim, Inwoo Han, Gennady G. Valyavin, Sergei Plachinda, Jeong Gyun Jang, Be-Ho Jang, Hyeon Cheol Seong, Byeong-Cheol Lee, Dong-Il Kang, Byeong-Gon Park, Tae Seog Yoon, Steven S. Vogt. 2007-07-28. The BOES spectropolarimeter for Zeeman measurements of stellar magnetic fields. https://doi.org/10.1086/521959

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