# name
Anomalous Proper-Motions in the Cygnus Super Bubble Region

# metadata.dc.description.abstract[].value
In an analysis of proper motions of O and B stars contained the Input Catalogue for Hipparcos, we have found a clear deviation from the expected pattern of systematic motions which can be readily identified with the associations Cygnus OB1 and Cygnus OB9, located near de the edge of the Cygnus Superbubble. Teha anomalous motions are directed outwards from the center of the Superbubble, which is coincident with tha association Cygnus OB2. This seems to support the hypothesis of a strong stellar and supernova activity in Cygnus 0B2 giving rise to the Superbubble and, by means of gravitational instabilities in its boundaries, to Cygnus 0B1 and Cygnus OB9. New uvby-beta aperture photometry of selected O and B stars in the area of Cygnus OB1 and Cygnus OB9 is also presented and analyzed in this paper.

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Reproducció digital del document publicat en format paper, proporcionada per NASA Astrophysics Data System http://adsabs.harvard.edu/

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Astronomy and Astrophysics Supplement Series, 1993, vol. 101, núm. 1, p. 37-47.

# metadata.dc.rights[].value
(c) The European Southern Observatory, 1993

# metadata.dc.source[].value
Articles publicats en revistes (Física Quàntica i Astrofísica)

# metadata.dc.subject.other[].value
Open clusters and associations: Cygnus OB1, Cygnus OB9

# metadata.dc.title[].value
Anomalous Proper-Motions in the Cygnus Super Bubble Region