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Resource Record Summary

Catalog Service:
Pre-eclipse dip of Her X-1
Short name: J/A+A/342/736
IVOA Identifier: ivo://CDS.VizieR/J/A+A/342/736
DOI (Digital Object Identifier): 10.26093/cds/vizier.33420736
Publisher: CDSivo://CDS[Pub. ID]
More Info: https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/342/736
VO Compliance: Level 2: This is a VO-compliant resource.		 Status: active
Registered: 1999 Feb 27 21:50:00Z
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Description


We report on a pre-eclipse dip of the X-ray binary pulsar Her X-1 observed by the Rossi X-ray Timing Explorer (RXTE) in 1996 July. The energy spectra in the 3-18keV range can be described by the sum of two power-laws, one of which is modified by photoelectric absorption and by Thomson scattering in cold material, plus an iron emission line at 6.7keV. We present the evolution of the spectral parameters with a temporal resolution of 16s and show that the varying flux and spectrum can be interpreted solely by a time varying column density. The data do not appear to require non-solar abundances in the absorbing material, although a slight over-abundance of the metals cannot be ruled out. We also find that the lightcurve is characterized by symmetric substructures which can be successfully modeled by Gaussian profiles. The recurrence time of these substructures is on a timescale of a few minutes.

More About this Resource

About the Resource Providers

This section describes who is responsible for this resource

Publisher: CDSivo://CDS[Pub. ID]

Creators:
Stelzer B.Wilms J.Staubert R.Gruber D.Rothschild R.

Contact Information:
X CDS support team
Email: cds-question at unistra.fr
Address: CDS
Observatoire de Strasbourg
11 rue de l'Universite
F-67000 Strasbourg
France

Status of This Resource

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

Version: n/a
Availability: This is an active resource.
  • This service provides only public data.
Relevant dates for this Resource:
  • Updated: 1999 Feb 27 20:50:06Z
  • Created: 1999 Feb 27 21:50:00Z

This resource was registered on: 1999 Feb 27 21:50:00Z
This resource description was last updated on: 2021 Oct 21 00:00:00Z
What This Resource is About

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

Resource Class: CatalogService
This resource is a service that provides access to catalog data. You can extract data from the catalog by issuing a query, and the matching data is returned as a table.
Resource type keywords:
  • Catalog
 Subject keywords:
  • Accretion
  • X-ray binary stars
Intended audience or use:
  • Research: This resource provides information appropriate for supporting scientific research.
More Info: https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/342/736 Literature Reference: 1999A&A...342..736S

Related Resources:

Other Related Resources
TAP VizieR generic service(IsServedBy) ivo://CDS.VizieR/TAP [Res. ID]

Data Coverage Information

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

Wavebands covered:

  • Optical
Rights and Usage Information

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

Rights:

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.

VO Compliance: Level 2: This is a VO-compliant resource.
Available endpoints for this service interface:
Custom Service

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

VO Compliance: Level 2: This is a VO-compliant resource.
Available endpoints for this service interface:
  • URL-based interface: http://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/342/736
Table Access Protocol - Auxiliary ServiceXX

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

VO Compliance: Level 2: This is a VO-compliant resource.
Available endpoints for the standard interface:
  • http://tapvizier.cds.unistra.fr/TAPVizieR/tap

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
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