A dedicated polarimeter for the MuSiCoS echelle spectrograph

被引：113

作者：

Donati, JF ^{[1
]}

Catala, C

Wade, GA

Gallou, G

Delaigue, G

Rabou, P

机构：

[1] Observ Midi Pyrenees, Astrophys Lab, F-31400 Toulouse, France

[2] Univ Western Ontario, Dept Phys & Astron, London, ON N6A 3K7, Canada

[3] Observ Grenoble, Astrophys Lab, F-38041 Grenoble, France

来源：

ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES | 1999年 / 134卷 / 01期

关键词：

stars : magnetic fields; stars : circumstellar matter; line : profiles; polarization; instrumentation : polarimeters;

D O I：

10.1051/aas:1999130

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present in this paper the technical characteristics of a new polarimetric unit dedicated to the MuSiCoS echelle spectrograph. The first test runs indicate that our instrument is very good at measuring polarisation or depolarisation structures in line profiles. It is therefore one of the very few facilities worldwide for studying magnetic topologies of active and chemically peculiar stars through rotational modulation of linearly and circularly polarised Zeeman signatures in line profiles. It is also a very interesting tool for investigating geometries of non-axisymmetric circumstellar environments through depolarisation of spectral lines formed within the scattering envelope.

引用

页码：149 / 159

页数：11

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