BCool survey of solar-type stars

We present the results of a major high-resolution spectropolarimetric BCool project magnetic survey of 170 solar-type stars. Surface magnetic fields were detected on 67 stars, with 21 classified as mature solar-type stars, a result that increases by a factor of 4 the number of mature solar-type stars on which magnetic fields have been observed. In addition, a magnetic field was detected for 3 out of 18 of the subgiant stars surveyed. For the population of K-dwarfs, the mean value of |Bl| (|Bl|mean) was also found to be higher (5.7G) than |Bl|mean measured for the G-dwarfs (3.2G) and the F-dwarfs (3.3G). For the sample as a whole, |Bl|mean increases with rotation rate and decreases with age, and the upper envelope for |Bl| correlates well with the observed chromospheric emission. Stars with a chromospheric S-index greater than about 0.2 show a high magnetic field detection rate and so offer optimal targets for future studies. This survey constitutes the most extensive spectropolarimetric survey of cool stars undertaken to date, and suggests that it is feasible to pursue magnetic mapping of a wide range of moderately active solar-type stars to improve our understanding of their surface fields and dynamos.

Cone search capability for table J/MNRAS/444/3517/stars (The BCool solar-type star sample: stellar parameters (table1), Least-Sqaere Deconvolution (LSD) profiles (table3), chromospheric activity (table6), and observation summary (tableB1))

Identifier
Source https://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/MNRAS/444/3517
Related Identifier https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/444/3517
Related Identifier http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/444/3517
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_b2find&identifier=ivo://CDS.VizieR/J/MNRAS/444/3517
Provenance
Creator Marsden S.C.; Petit P.; Jeffers S.V.; Morin J.; Fares R.; Reiners A.,do Nascimento J.-D Jr; Auriere M.; Bouvier J.; Carter B.D.; Catala C.,Dintrans B.; Donati J.-F.; Gastine T.; Jardine M.; Konstantinova-Antova R.,Lanoux J.; Lignieres F.; Morgenthaler A.; Ramirez-Velez J.C.; Theado S.,Van Grootel V.; (the BCool Collaboration)
Publisher CDS
Publication Year 2015
Rights https://cds.unistra.fr/vizier-org/licences_vizier.html
OpenAccess true
Contact CDS support team <cds-question(at)unistra.fr>
Representation
Resource Type Dataset; AstroObjects
Discipline Astrophysical Processes; Astrophysics and Astronomy; Natural Sciences; Observational Astronomy; Physics; Stellar Astronomy