2014/01/31 by P. Petit, T. Louge, S. Théado +5 · 165 citations
Physics and Astronomy · #Circular polarization #Homogeneous #Linear polarization #Polarimetry #Polarization (electrochemistry) #Scientific Research and Discoveries #Solar and Space Plasma Dynamics #Spectral line #Stars #Stellar, planetary, and galactic studies #Stokes parameters #Zeeman effect #astro-ph.IM #astro-ph.SR
paper · pdf · doi:10.1086/676976
published in Publications of the Astronomical Society of the Pacific 126(939), 469-475 (Institute of Physics) · Accepted for publication in PASP
arxiv created 2014/04/22 · openalex publication_date 2014/05/01 · arxiv updated 2016/03/09 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
PolarBase is an evolving database that contains all stellar data collected with the ESPaDOnS and NARVAL high-resolution spectropolarimeters, in their reduced form, as soon as they become public. As of early 2014, observations of 2000 stellar objects throughout the Hertzsprung-Russell diagram are available. Intensity spectra are available for all targets, and the majority of the observations also include simultaneous spectra in circular or linear polarization, with the majority of the polarimetric measurements being performed only in circularly polarized light (Stokes V ). Observations are associated with a cross-correlation pseudoline profile in all available Stokes parameters, greatly increasing the detectability of weak polarized signatures. Stokes V signatures are detected for more than 300 stars of all masses and evolutionary stages, and linear polarization is detected in 35 targets. The detection rate in Stokes V is found to be anticorrelated with the stellar effective temperature. This unique set of Zeeman detections offers the first opportunity to run homogeneous magnetometry studies throughout the H-R diagram. The Web interface of PolarBase is available at http://polarbase.irap.omp.eu.