Rotational and magnetic properties of mCP stars Virtual Observatory Resource

Authors
  1. Sikora J.
  2. Wade G.A.
  3. Power J.
  4. Neiner C.
  5. Published by
    CDS
Abstract

Various surveys focusing on the magnetic properties of intermediate-mass main-sequence (MS) stars have been previously carried out. One particularly puzzling outcome of these surveys is the identification of a dichotomy between the strong (>~100G), organized fields hosted by magnetic chemically peculiar (mCP) stars and the ultraweak (~<1G) fields associated with a small number of non-mCP MS stars. Despite attempts to detect intermediate strength fields (i.e. those with strengths >~10 and ~<100G), remarkably few examples have been found. Whether this so-called magnetic desert, separating the stars hosting ultraweak fields from the mCP stars truly exists has not been definitively answered. In 2007, a volume-limited spectropolarimetric survey of mCP stars using the MuSiCoS spectropolarimeter was initiated to test the existence of the magnetic desert by attempting to reduce the biases inherent in previous surveys. Since then, we have obtained a large number of ESPaDOnS and NARVAL Stokes V measurements allowing this survey to be completed. Here, we present the results of our homogeneous analysis of the rotational periods (inferred from photometric and magnetic variabilities) and magnetic properties (dipole field strengths and obliquity angles) of the 52 confirmed mCP stars located within a heliocentric distance of 100pc. No mCP stars exhibiting field strengths ~<300G are found within the sample, which is consistent with the notion that the magnetic desert is a real property and not the result of an observational bias. Additionally, we find evidence of magnetic field decay, which confirms the results of previous studies.

Keywords
  1. Early-type stars
  2. Magnetic fields
Bibliographic source Bibcode
2019MNRAS.483.3127S
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/483/3127
IVOA Identifier IVOID
ivo://CDS.VizieR/J/MNRAS/483/3127
Document Object Identifer DOI

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/483/3127
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/483/3127
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/483/3127
IVOA Table Access TAP
http://tapvizier.cds.unistra.fr/TAPVizieR/tap
Run SQL-like queries with TAP-enabled clients (e.g., TOPCAT).
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
http://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/483/3127/list?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/483/3127/list?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/483/3127/list?
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
http://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/483/3127/table2?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/483/3127/table2?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/483/3127/table2?
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
http://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/483/3127/table3?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/483/3127/table3?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/483/3127/table3?

History

2022-08-11T10:14:21Z
Resource record created
2022-08-11T10:14:21Z
Created
2022-10-14T13:52:56Z
Updated

Contact

Name
CDS support team
Postal Address
CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France
E-Mail
cds-question@unistra.fr