LONEOS-I RR Lyrae stars Virtual Observatory Resource

Authors
  1. Miceli A.
  2. Rest A.
  3. Stubbs C.W.
  4. Hawley S.L.
  5. Cook K.H.
  6. Magnier E.A.,Krisciunas K.
  7. Bowell E.
  8. Koehn B.
  9. Published by
    CDS
Abstract

We present 838 ab-type RR Lyrae stars from the Lowell Observatory Near Earth Objects Survey Phase I (LONEOS-I). These objects cover 1430deg^2^ and span distances ranging from 3 to 30kpc from the Galactic center. Object selection is based on phased, photometric data with 28-50 epochs. We use this large sample to explore the bulk properties of the stellar halo, including the spatial distribution. The period-amplitude distribution of this sample shows that the majority of these RR Lyrae stars resemble Oosterhoff type I, but there is a significant fraction (26%) which have longer periods and appear to be Oosterhoff type II. We find that the radial distributions of these two populations have significantly different profiles ({rho}_OoI_~R^-2.26+/-0.07^ and {rho}_OoII_~R^-2.88+/-0.11^). This suggests that the stellar halo was formed by at least two distinct accretion processes and supports dual-halo models.

Keywords
  1. halo-stars
  2. variable-stars
  3. photometry
Bibliographic source Bibcode
2008ApJ...678..865M
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/678/865
IVOA Identifier IVOID
ivo://CDS.VizieR/J/ApJ/678/865
Document Object Identifer DOI
doi:10.26093/cds/vizier.16780865

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/678/865
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/678/865
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/678/865
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/ApJ/678/865/table1?
https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/678/865/table1?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/678/865/table1?

History

2010-10-06T14:46:53Z
Resource record created
2010-10-06T14:46:53Z
Created
2010-11-03T20:47:27Z
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