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New light on the corrugation phenomenon in our Galaxy

Published online by Cambridge University Press:  04 August 2017

J. V. Feitzinger  and
J. Spicker
J. V. Feitzinger
Affiliation:
Astronomical Institute, Ruhr-University Bochum
J. Spicker
Affiliation:
Astronomical Institute, Ruhr-University Bochum

Extract

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This investigation presents a total picture of the well-known corrugation-phenomenon for the (heliocentric) longitude range 10° ≤ 1 ≤ 240° as derived from HI-studies. For each spiral arm of the spiral pattern of Simonson (1976), we derived the centroid of the HI distribution from the 21-cm line surveys of Weaver and Williams (1974), Sinha (1979), and Westerhout and Wendlandt (1982). The three-component mass model of Rohlfs and Kreitschmann (1981) was used to derive a radial-velocity field, which was supplemented by a radial expansion field and by density-wave kinematics. This combined field served to calculated kinematic distances. The warp was taken into account according to Henderson et al. (1982) and Kulkarni et al. (1982).

Type
PART II: COMPOSITION, STRUCTURE AND KINEMATICS
Information
Symposium - International Astronomical Union , Volume 106: The Milky Way Galaxy , 1985 , pp. 175 - 178
Copyright
Copyright © Reidel 1985 

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