Draco MegaCam, INT and HST photometry Virtual Observatory Resource

Authors
  1. Segall M.
  2. Ibata R.A.
  3. Irwin M.J.
  4. Martin N.F.
  5. Chapman S.
  6. Published by
    CDS
Abstract

The Draco dwarf spheroidal galaxy (dSph), with its apparent immense mass-to-light ratio and compact size, holds many clues to the nature of the enigmatic dark matter. Here we present deep photometric studies of this dwarf galaxy, undertaken with the MegaCam Camera at the Canada-France-Hawaii Telescope, the Wide Field Camera at the Isaac Newton Telescope and the Wide Field and Planetary Camera onboard the Hubble Space Telescope (HST). The new photometric data cover the entirety of the galaxy, and reach i'=24.5 at 50 per cent completeness, significantly deeper than previous panoramic studies, allowing searches for tidal disturbances of much lower surface brightness than has been possible before. With these improved statistics, we find no evidence for asymmetric disturbances or tidal tails that possess more than 3 per cent of the stars found within the centre of the galaxy. We find that the central stellar density, as probed by the HST data, rises into the central 0.5arcmin. Uncertainties in the position of the centroid of the galaxy do not allow us to determine whether the apparent flattening of the profile interior to 0.5arcmin is reliable or not. Draco is therefore a flawless dwarf galaxy, featureless and apparently unaffected by Galactic tides.

Keywords
  1. galaxies
  2. photometry
Bibliographic source Bibcode
2007MNRAS.375..831S
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/375/831
IVOA Identifier IVOID
ivo://CDS.VizieR/J/MNRAS/375/831
Document Object Identifer DOI
doi:10.26093/cds/vizier.73750831

Access

Web browser access HTML
https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/375/831
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/375/831
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/375/831
IVOA Table Access TAP
https://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).
https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/375/831/table2?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/375/831/table2?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/375/831/table2?
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/375/831/table3?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/375/831/table3?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/375/831/table3?
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/375/831/table5?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/375/831/table5?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/375/831/table5?

History

2008-04-13T12:18:31Z
Resource record created
2008-04-13T12:18:31Z
Created
2024-07-04T20:17:56Z
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