VMC RR Lyrae in LMC Virtual Observatory Resource

Authors
  1. Cusano F.
  2. Moretti M.I.
  3. Clementini G.
  4. Ripepi V.
  5. Marconi M.,Cioni M.-R.L.
  6. Rubele S.
  7. Garofalo A.
  8. De Grijs R.
  9. Groenewegen M.A.T.,Oliveira J.M.
  10. Subramanian S.
  11. Sun N.-C.
  12. Van Loon J.T.
  13. Published by
    CDS
Abstract

We present results from an analysis of ~29000 RR Lyrae stars located in the Large Magellanic Cloud (LMC). For these objects, near-infrared time-series photometry from the VISTA survey of the Magellanic Clouds system (VMC) and optical data from the Optical Gravitational Lensing Experiment (OGLE) IV survey and the Gaia Data Release 2 catalogue of confirmed RR Lyrae stars were exploited. Using VMC and OGLE IV magnitudes we derived period-luminosity (PL), period-luminosity-metallicity (PLZ), period-Wesenheit (PW), and period-Wesenheit-metallicity (PWZ) relations in all available bands. More that 7000 RR Lyrae were discarded from the analysis because they appear to be overluminous with respect to the PL relations. The PL_K_s_ relation was used to derive individual distance to ~22000 RR Lyrae stars, and study the three-dimensional structure of the LMC. The distribution of the LMC RR Lyrae stars is ellipsoidal with the three axis S_1_=6.5kpc, S_2_=4.6kpc, and S_3_=3.7kpc, inclination i=22+/-4{deg} relative to the plane of the sky and position angle of the line of nodes {theta}=167+/-7{deg} (measured from north to east). The north-eastern part of the ellipsoid is closer to us and no particular associated substructures are detected and neither any metallicity gradient.

Keywords
  1. magellanic-clouds
  2. variable-stars
  3. infrared-photometry
Bibliographic source Bibcode
2021MNRAS.504....1C
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/504/1
IVOA Identifier IVOID
ivo://CDS.VizieR/J/MNRAS/504/1

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/504/1
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/504/1
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/504/1
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/MNRAS/504/1/table3?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/504/1/table3?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/504/1/table3?

History

2024-01-09T16:43:26Z
Resource record created
2024-01-09T16:43:26Z
Created
2024-06-20T14:40:25Z
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