J/ApJS/93/211: Resource Record Summary

Resource Record Summary

Catalog Service:
IUE survey of H I Ly{alpha} absorption. I.

Short name: J/ApJS/93/211 IVOA Identifier: ivo://CDS.VizieR/J/ApJS/93/211 DOI (Digital Object Identifier): 10.26093/cds/vizier.20930211 Publisher: CDSivo://CDS[Pub. ID] More Info: http://cdsarc.unistra.fr/cgi-bin/cat/J/ApJS/93/211 VO Compliance: Level 2: This is a VO-compliant resource.	Status: active Registered: 1999 Feb 27 13:05:45Z
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Description

We measure Galactic interstellar neutral hydrogen column densities by analyzing archival interstellar Ly{alpha} absorption line data toward 554 B2 and hotter stars observed at high resolution with the IUE satellite. This study more than doubles the number of lines of sight with measures of N(H I) based on Ly{alpha}. We have included the scattered light background correction algorithm of Bianchi and Bohlin (1984A&A...134...31B) in our data reduction. We use the correlation between the Balmer discontinuity [c_1_] index and the stellar Ly{alpha} absorption in order to assess the effects of stellar Ly alpha contamination. Approximately 40% of the B stars with measured [c_1_] index, exhibit serious stellar Ly{alpha} contamination. Table 1 contains the derived values of the interstellar N(H I) for 393 stars with at most small amounts of stellar contamination. Table 2 lists the observed values of total N(H I) for 161 stars with suspected stellar Ly alpha contamination and/or uncertain stellar parameters.

More About this Resource

About the Resource Providers

This section describes who is responsible for this resource

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

Creators:

Diplas A.Savage B.D.

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: 2013 Feb 27 06:16:44Z
Created: 1999 Feb 27 13:05:45Z

This resource was registered on: 1999 Feb 27 13:05:45Z
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: H I line emission Photometry Optical astronomy Wide-band photometry Redshifted Ultraviolet astronomy This service provides data from: facility: IUE
Intended audience or use: Research: This resource provides information appropriate for supporting scientific research.
More Info: http://cdsarc.unistra.fr/cgi-bin/cat/J/ApJS/93/211	Literature Reference: 1994ApJS...93..211D
Related Resources: Other Related Resources TAP VizieR generic service(IsServedBy) ivo://CDS.VizieR/TAP [Res. ID] Conesearch service(IsServedBy) 1994ApJ...427..274D : Paper II. Diplas & Savage, (1994)

	Data Coverage Information
	This section describes the data's coverage over the sky, frequency, and time. Wavebands covered: UV Optical Radio

	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: Interactive web page: http://vizier.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/93/211

	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.unistra.fr/viz-bin/votable?-source=J/ApJS/93/211

	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.u-strasbg.fr/TAPVizieR/tap

Simple Cone SearchXXSearch Me

This is a standard IVOA service that takes as input a position in the sky and a radius and returns catalog records with positions within that radius.

VO Compliance: Level 2: This is a VO-compliant resource.
Description:

Cone search capability for table J/ApJS/93/211/table1 (Interstellar atomic hydrogen column densities)

Available endpoints for the standard interface:

http://vizier.unistra.fr/viz-bin/conesearch/J/ApJS/93/211/table1?

Maximum search radius accepted: 180.0 degrees
Maximum number of matching records returned: 50000

This service supports the VERB input parameter:: Use VERB=1 to minimize the returned columns or VERB=3 to maximize.

Simple Cone SearchXXSearch Me

This is a standard IVOA service that takes as input a position in the sky and a radius and returns catalog records with positions within that radius.

VO Compliance: Level 2: This is a VO-compliant resource.
Description:

Cone search capability for table J/ApJS/93/211/table2 (Atomic hydrogen column densities for stars with suspected stellar Lyman-alpha contamination and/or uncertain stellar parameters)

Available endpoints for the standard interface:

http://vizier.unistra.fr/viz-bin/conesearch/J/ApJS/93/211/table2?

Maximum search radius accepted: 180.0 degrees
Maximum number of matching records returned: 50000

This service supports the VERB input parameter:: Use VERB=1 to minimize the returned columns or VERB=3 to maximize.