Astrophysics and Space Science

, Volume 25, Issue 1, pp 207–216 | Cite as

Study of the outer galactic structure for 288°≤l≤310°, −7°≤b≤2°

  • Silvia L. Garzoli
  • Igor F. Mirabel


The structure of the outer part of the Galaxy is studied, based upon 21-cm line observations of Hi in the region 288°≤l≤310°, −7°≤b≤2°.

In this longitude range the galactic plane is strongly bend toward negative latitudes.

The principal outer structure is a spiral arm which has a pitch angle of 10° and is formed by several concentrations differing in shape and size. There exists also a secondary concentration which could be a split from the previous structure.

Possible hypotheses about the origin of the later feature are discussed.


Pitch Angle Outer Part Galactic Plane Line Observation Previous Structure 
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

© D. Reidel Publishing Company 1973

Authors and Affiliations

  • Silvia L. Garzoli
    • 1
    • 2
  • Igor F. Mirabel
    • 3
    • 2
  1. 1.Facultad de Ciencias Exactas de la Universidad de Buenos AiresArgentina
  2. 2.Instituto Argentino de RadioastronomiaArgentina
  3. 3.Observatorio Astronómico de la Universidad de La PlataArgentina

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