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IR Star Counts in the Inner Disc

  • P. L. Hammersley
  • F. Garzón
  • T. Mahoney
  • M. López-Corredoira
Part of the Astrophysics and Space Science Library book series (ASSL, volume 230)

Abstract

New small-scale JH star counts are presented for 4 regions on the plane between l=31° and l=15°.The colourmagnitude diagrams clearly show that there is a major giant branch at l=27° which is not present at l=31°. The distance to this feature is about 7.5 kpc with a total extinction of A V =7 mag. This giant branch is also seen at l=21° and l=15° and is consistent with there being a major bar at an angle of about 75° to the line of sight. At l=31° only features attributable to the disc can be seen and show that the extinction within the molecular ring is significantly higher than along the rest of the line of sight.

Keywords

Galactic Plane Tangential Point Young Star Galactocentric Distance Total Extinction 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media Dordrecht 1998

Authors and Affiliations

  • P. L. Hammersley
    • 1
  • F. Garzón
    • 1
  • T. Mahoney
    • 1
  • M. López-Corredoira
    • 1
  1. 1.Instituto de Astrofísica de CanariasLa LagunaSpain

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