ICON
NAVO Directory
X Tip: What's a "Resource"?
Hosted By
STScI Home
Space Telescope
Science Institute

Resource Record Summary

Catalog Service:
Magnetic field in V2052 Oph

Short name: J/A+A/411/565
IVOA Identifier: ivo://CDS.VizieR/J/A+A/411/565
DOI (Digital Object Identifier): 10.26093/cds/vizier.34110565
Publisher: CDS[+][Pub. ID]
More Info: https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/411/565
VO Compliance: Level 2: This is a VO-compliant resource.
Status: active
Registered: 2004 Mar 05 21:19:42Z
Get XML

Description


V2052 Oph is a {beta} Cep star with vsini~60km/s. The behavior of its stellar wind was studied in the ultraviolet wavelength region with the IUE satellite. It revealed periodic variations in the equivalent widths (EW) of the resonance lines of wind-sensitive ions with a period of 3.638833d, which is identified as the rotational period. These variations are typical of magnetic stars. Therefore time-resolved circular spectropolarimetric observations were obtained with the Musicos echelle spectropolarimeter at the 2-m Telescope Bernard Lyot (TBL) to search for a magnetic field in the star. Stokes V patterns were observed, the inclination and magnetic angles were derived and a value was determined for the polar magnetic field (250+/-190G) using an oblique rotator dipole model. The spectroscopic information was used to search for periodicity in line-profile variations (lpv), radial velocity and minimum intensity curves. Multiperiodicity was found, corresponding to radial (f1=7.15c/d) and non-radial (f2=6.82c/d, l=3 or 4) pulsation modes. The rotation period is also detected in rotationally modulated observables because of the magnetic poles passing through the observer's line of sight. We determined the stellar parameters of the star, which was found to be chemically peculiar, in particular He-enriched. This makes V2052 Oph the first magnetic He-strong early B star with known pulsational properties.

More About this Resource

[+] About the Resource Providers

This section describes who is responsible for this resource

[+] Status of This Resource

This section provides some status information: the resource version, availability, and relevant dates.

[+] What This Resource is About

This section describes what the resource is, what it contains, and how it might be relevant.

[+] Data Coverage Information

This section describes the data's coverage over the sky, frequency, and time.

[+] Rights and Usage Information

This section describes the rights and usage information for this data.

Available Service Interfaces

[+] Custom Service

This is service that does not comply with any IVOA standard but instead provides access to special capabilities specific to this resource.

[+] Custom Service

This is service that does not comply with any IVOA standard but instead provides access to special capabilities specific to this resource.

[+] Table Access Protocol - Auxiliary ServiceXX

This is a standard IVOA service that takes as input an ADQL or PQL query and returns tabular data.



Developed with the support of the National Science Foundation
under Cooperative Agreement AST0122449 with the Johns Hopkins University
The NAVO project is a member of the International Virtual Observatory Alliance

This NAVO Application is hosted by the Space Telescope Science Institute

Member
ivoa logo
Contact Us