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Resource Record Summary

Catalog Service:
Nearby M subdwarfs from LAMOST DR2

Short name: J/other/RAA/16.G
IVOA Identifier: ivo://CDS.VizieR/J/other/RAA/16.G7
Bibcode: 2016RAA....16g...7B
Publisher: CDSivo://CDS[Pub. ID]
More Info: http://cdsarc.unistra.fr/cgi-bin/cat/J/other/RAA/16.G7
VO Compliance: Level 2: This is a VO-compliant resource.
Status: active
Registered: 2016 Nov 10 12:27:36Z
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Description


We identify 108 M subdwarfs (sdMs) out of more than two hundred thousand M type spectra from the second data release (DR2) of the LAMOST regular survey. This sample, among which 58 members are identified for the first time, includes 33 extreme subdwarfs (esdMs) and 11 ultra subdwarfs (usdMs). The selection is based on the usual ratio of absorption depth of CaH2, CaH3 and TiO5 band systems. We also emphasize the use of the CaH1 band. We provide estimates of spectral subtype (SPT), Lepine metallicity index zeta, effective temperature and [Fe/H]. Both zeta-[Fe/H] and SPT-Teff figures show reasonable consistency; compared to PHOENIX model spectra, average rounded values of [Fe/H] for sdMs, esdMs and usdMs are respectively -0.5, -1 and -1.5. The photometric distances are estimated, indicating that most sources are located within 500pc of the Sun and 350pc of the Galactic disk. Velocities and 3D Galactic motions are also briefly discussed. Among the 108 subdwarfs, seven stars appear to be active with a significant H{alpha} emission line. The source LAMOST J104521.52+482823.3 is a white dwarf - M subdwarf binary, while LAMOST J123045.52+410943.8, also active, exhibits carbon features in red.

More About this Resource

About the Resource Providers

This section describes who is responsible for this resource

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

Creators:
Bai Y.Luo A.-L.Comte G.Zhao J.-K.Yang H.-F.Guo Y.-X.Wang Y.-F.Li Y.-B.Du B.Hou W.Kong X.Yi Z.-P.Song Y.-H.Bai Z.-R.Zhang J.-N.Wang M.-X.Chen J.-J.Chen X.-Y.Wu K.-F.Zuo F.Wu Y.Cao Z.-H.Hou Y.-H.Wang Y.-F.Zhang Y.

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: 2016 Nov 30 15:17:36Z
  • Created: 2016 Nov 10 12:27:36Z

This resource was registered on: 2016 Nov 10 12:27:36Z
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:
  • M stars
  • Subdwarf stars
Intended audience or use:
  • Research: This resource provides information appropriate for supporting scientific research.
More Info: http://cdsarc.unistra.fr/cgi-bin/cat/J/other/RAA/16.G7 Literature Reference: 2016RAA....16..107B

Related Resources:

Other Related Resources
TAP VizieR generic service(IsServedBy) ivo://CDS.VizieR/TAP [Res. ID]
V/146 : LAMOST DR1 catalogs (Luo+, 2015) ivo://CDS.VizieR/V/146 [Res. ID]

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.

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.unistra.fr/viz-bin/votable?-source=J/other/RAA/16.G7
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


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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