Study of the outer galactic structure for 288°≤l≤310°, ?7°≤b≤2° |
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| Authors: | Silvia L Garzoli Igor F Mirabel |
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| Institution: | (1) Facultad de Ciencias Exactas de la Universidad de Buenos Aires, Argentina;(2) Instituto Argentino de Radioastronomia, Argentina;(3) Observatorio Astronómico de la Universidad de La Plata, Argentina;(4) Present address: C. C. 5, Villa Elisa, Provincia de Buenos Aires, Argentina |
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| Abstract: | The structure of the outer part of the Galaxy is studied, based upon 21-cm line observations of Hi in the region 288° l310°, –7°b2°.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. |
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