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Title: Anomalous Proper-Motions in the Cygnus Super Bubble Region
Author: Comerón Tejero, Fernando
Torra Roca, Jorge
Jordi i Nebot, Carme
Gomez, A. E.
Keywords: Estels Clústers
Fotometria astronòmica
Stars: early type
Interstellar medium: bubbles
Open clusters and associations: Cygnus OB1, Cygnus OB9
Issue Date: 1993
Publisher: EDP Sciences
Abstract: 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.
Note: Reproducció digital del document publicat en format paper, proporcionada per NASA Astrophysics Data System
It is part of: Astronomy and Astrophysics Supplement Series, 1993, vol. 101, núm. 1, p. 37-47.
ISSN: 0365-0138
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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