PolarBase: a data base of high-resolution spectropolarimetric stellar observations

Petit, P. and Louge, T. and Theado, S. and Paletou, F. and Manset, N. and Morin, J. and Marsden, S. C. and Jeffers, S. V. (2014) PolarBase: a data base of high-resolution spectropolarimetric stellar observations. Publications of the Astronomical Society of the Pacific, 126 (939). pp. 469-475. ISSN 0004-6280

Abstract

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.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: © 2014 The Astronomical Society of the Pacific. Published version deposited in accordance with the copyright policy of the publisher.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Agricultural, Computational and Environmental Sciences
Date Deposited: 30 Jun 2014 03:02
Last Modified: 04 Jul 2016 04:26
Uncontrolled Keywords: stellar objects; Hertzsprung-Russell diagram; observations
Fields of Research : 02 Physical Sciences > 0201 Astronomical and Space Sciences > 020110 Stellar Astronomy and Planetary Systems
08 Information and Computing Sciences > 0806 Information Systems > 080608 Information Systems Development Methodologies
02 Physical Sciences > 0201 Astronomical and Space Sciences > 020107 Mesospheric, Ionospheric and Magnetospheric Physics
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970102 Expanding Knowledge in the Physical Sciences
Identification Number or DOI: 10.1086/676976
URI: http://eprints.usq.edu.au/id/eprint/25205

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