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5.19. A high resolution CO map of the inner region of M51

Published online by Cambridge University Press:  25 May 2016

S. Aalto ,
S. Hüttemeister ,
N. Scoville  and
P. Thaddeus
S. Aalto
Affiliation:
Onsala Rymdobservatorium, Sweden Caltech, Pasadena, USA
S. Hüttemeister
Affiliation:
RAIUB, Bonn, Germany CfA, Cambridge, USA
N. Scoville
Affiliation:
Caltech, Pasadena, USA
P. Thaddeus
Affiliation:
CfA, Cambridge, USA

Extract

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M51, the Whirlpool Galaxy, at a distance of ≈ 9,6 Mpc and a systemic velocity of 465 km s−1, is the closest “Grand Design” spiral galaxy. Its low inclination (20°) makes it an excellent target for structural studies, e.g. the formation of arms in response to a spiral density wave causing gas streaming motions. We have obtained a high resolution, sensitive map of the inner 2.5′ of M51 using the Caltech six-element OVRO array. The map consists of a 19-field mosaic, taken using three different telescope configurations. The resolution is 2.5″, (corresponding to 115 pc linear size) and 3.5” for the robustly and naturally weigthed maps, respectively.

Type
Part II. Nuclear Interstellar Medium
Information
Symposium - International Astronomical Union , Volume 184: The Central Regions of the Galaxy and Galaxies , 1998 , pp. 249 - 250
Copyright
Copyright © Kluwer 1998 

References

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