# The linear polarisation of southern bright stars measured at the parts-per-million level

@inproceedings{Cotton2015TheLP,
title={The linear polarisation of southern bright stars measured at the parts-per-million level},
author={Daniel V. Cotton and Jeremy Bailey and Lucyna Kedziora-Chudczer and Kimberly Bott and Philip W. Lucas and James Hough and Jonathan P. Marshall},
year={2015}
}
• Published 24 September 2015
• Physics
We report observations of the linear polarisation of a sample of 50 nearby southern bright stars measured to a median sensitivity of ∼4.4 ×10−6. We find larger polarisations and more highly polarised stars than in the previous PlanetPol survey of northern bright stars. This is attributed to a dustier interstellar medium in the mid-plane of the Galaxy, together with a population containing more B-type stars leading to more intrinsically polarised stars, as well as using a wavelength more…
14 Citations

## Figures and Tables from this paper

Polarization due to rotational distortion in the bright star Regulus
• Physics
• 2017
Polarization in stars was first predicted by Chandrasekhar1, who calculated a substantial linear polarization at the stellar limb for a pure electron-scattering atmosphere. This polarization will
Demonstration of Magnetic Field Tomography with Starlight Polarization toward a Diffuse Sightline of the ISM
• Physics
The Astrophysical Journal
• 2019
The availability of large data sets with stellar distance and polarization information will enable a tomographic reconstruction of the (plane-of-the-sky-projected) interstellar magnetic field in the
HIPPI-2: A versatile high-precision polarimeter
• Physics
Publications of the Astronomical Society of Australia
• 2020
Abstract We describe the High-Precision Polarimetric Instrument-2 (HIPPI-2) a highly versatile stellar polarimeter developed at the University of New South Wales. Two copies of HIPPI-2 have been
The rotationally modulated polarization of ξ Boo A
• Physics
Monthly Notices of the Royal Astronomical Society
• 2018
We have observed the active star ξ Boo A (HD 131156A) with high precision broadband linear polarimetry contemporaneously with circular spectropolarimetry. We find both signals are modulated by the
Whence the Interstellar Magnetic Field Shaping the Heliosphere?
• Physics
The Astrophysical Journal Supplement Series
• 2022
Measurements of starlight polarized by aligned interstellar dust grains are used to probe the relation between the orientation of the ambient interstellar magnetic field (ISMF) and the ISMF traced by
Polarimetric detection of non-radial oscillation modes in the β Cephei star β Crucis
• Physics, Geology
Nature Astronomy
• 2021
Here we report the detection of polarization variations due to non-radial modes in the β Cephei star β Crucis. In so doing we confirm 40-year-old predictions of pulsation-induced polarization
The Polarization of the Planet-Hosting WASP-18 System
• Physics, Geology
The Astronomical Journal
• 2018
We report observations of the linear polarization of the WASP-18 system, which harbors a very massive ( approx 10 M_J) planet orbiting very close to its star with an orbital period of 0.94 days. We
Polarized reflected light from the Spica binary system
• Physics
Nature Astronomy
• 2019
Close binary systems often show linear polarization varying over the binary period, usually attributed to light scattered from electrons in circumstellar clouds1–3. One of the brightest close binary
RefPlanets: Search for reflected light from extrasolar planets with SPHERE/ZIMPOL
• Physics, Geology
Astronomy & Astrophysics
• 2020
Aims. RefPlanets is a guaranteed time observation programme that uses the Zurich IMaging POLarimeter (ZIMPOL) of Spectro-Polarimetric High-contrast Exoplanet REsearch instrument at the Very Large
Phase-locked polarization by photospheric reflection in the semidetached eclipsing binary μ1 Sco
• Physics
• 2020
We report the detection of phase-locked polarization in the bright ($m_V$=2.98-3.24) semidetached eclipsing binary $\mu^1$ Sco (HD 151890). The phenomenon was observed in multiple photometric bands

## References

SHOWING 1-10 OF 19 REFERENCES
Progress in Physics of the Sun and Stars: A New Era in Helio- and Asteroseismology
• L. P.
• Physics, Geology
• 2013
At first sight, the Kepler data of the A-type star KIC 5988140 mimics the light curve of an eclipsing binary system with a superposed short-period variability of type δ Scuti. It was attributed by
The Nature and Evolution of Disks Around Hot Stars
• Physics
• 2005
B[e] supergiants are known to possess outflowing cool disks but also some unclassified B[e] stars show clear indications for the presence of a neutral disk. We derive constraints on the disk mass
The Rotation of Sun and Stars
• Physics
• 2009
The Sun: A Slowly Rotating Star.- What Is Coming: Issues Raised from Observation of the Shape of the Sun.- Effects of Rotation on Stellar p-Mode Frequencies.- Approaching the Low-Frequency Spectrum
Society of Photo-Optical Instrumentation Engineers
• Physics
• 2005
We report here the preliminary results obtained with the multi-conjugate adaptive optics (MCAO) system at the Dunn Solar Telescope (DST/NSO MCAO) and the optical setup and performances are presented
1978a, Burnham’s Celestial Handbook: Volume One
• 1978
Rev. Mex. Astron. Astrofis
• Rev. Mex. Astron. Astrofis
• 2015
Publications of Michigan Observa
• A&A,
• 1984
AAS/Division for Planetary Sciences Meeting Abstracts
• AAS/Division for Planetary Sciences Meeting Abstracts
• 2014