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Kinematical Study of Old HII Regions and Optical Counterpart to the DRAO Canadian Galactic Plane Survey

Published online by Cambridge University Press:  05 March 2013

Steve Godbout ,
Gilles Joncas  and
Laurent Drissen
Steve Godbout
Affiliation:
Département de Physique, Observatoire du Mont-Mégantic, Université Laval, Québec G1K 7P4, Canada; [email protected]
Gilles Joncas
Affiliation:
Département de Physique, Observatoire du Mont-Mégantic, Université Laval, Québec G1K 7P4, Canada; [email protected]
Laurent Drissen
Affiliation:
Département de Physique, Observatoire du Mont-Mégantic, Université Laval, Québec G1K 7P4, Canada; [email protected]
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Abstract

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This project aims to tackle a few unresolved problems related to the interstellar medium (ISM) by acting as an optical counterpart to the Canadian Galactic Plane Survey (CGPS). We have three main objectives: (1) the study of large/old HII regions; (2) observations of targets-of-opportunity that may be found by the CGPS; (3) comparison of the kinematics of extragalactic (M33) and galactic HII regions. (1) Old HII regions having large spatial extents will be observed to establish their kinematical structure when almost no molecular material is left to produce photodissociated flows. Does turbulence play a role in these objects as for younger nebulae? (2) Ionised nebulae observed by the CGPS that are peculiar, either morphologically or by special association with neutral hydrogen, will also be observed. (3) The kinematical behaviour of old HII regions in M33 will be compared with that of galactic HII regions. With both data sets in hand we will check if HII regions, like supernovae, dump energy into the neutral ISM. The instrument used as well as some very preliminary data are presented.

Keywords

HII regionsinstrumentation: interferometers
Type
Research Article
Information
Publications of the Astronomical Society of Australia , Volume 15 , Issue 1 , 1998 , pp. 60 - 63
Copyright
Copyright © Astronomical Society of Australia 1998

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