PolarBase: a data base of high-resolution spectropolarimetric stellar observations
Article
Article Title | PolarBase: a data base of high-resolution spectropolarimetric stellar observations |
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ERA Journal ID | 1082 |
Article Category | Article |
Authors | Petit, P. (Author), Louge, T. (Author), Theado, S. (Author), Paletou, F. (Author), Manset, N. (Author), Morin, J. (Author), Marsden, S. C. (Author) and Jeffers, S. V. (Author) |
Journal Title | Publications of the Astronomical Society of the Pacific |
Journal Citation | 126 (939), pp. 469-475 |
Number of Pages | 7 |
Year | 2014 |
Publisher | IOP Publishing |
Place of Publication | Chicago, IL. United States |
ISSN | 0004-6280 |
1538-3873 | |
Digital Object Identifier (DOI) | https://doi.org/10.1086/676976 |
Web Address (URL) | http://www.jstor.org/stable/10.1086/676976 |
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. |
Keywords | stellar objects; Hertzsprung-Russell diagram; observations |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
460905. Information systems development methodologies and practice | |
510903. Mesospheric, thermospheric, ionospheric and magnetospheric physics | |
Public Notes | © 2014 The Astronomical Society of the Pacific. Published version deposited in accordance with the copyright policy of the publisher. |
Byline Affiliations | University of Toulouse, France |
Canada-France-Hawaii Telescope, United States | |
University of Montpellier, France | |
Computational Engineering and Science Research Centre | |
Georg August University of Gottingen, Germany | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q2671/polarbase-a-data-base-of-high-resolution-spectropolarimetric-stellar-observations
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