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M Giant Kinematics in Off-Axis Fields Between 150 and 300 PC from the Galactic Center

Published online by Cambridge University Press:  25 May 2016

R. D. Blum ,
J. S. Carr ,
K. Sellgren  and
D. M. Terndrup
R. D. Blum
Affiliation:
The Ohio State University, 174 W. 18th Ave., Columbus, Oh, 43210, USA
J. S. Carr
Affiliation:
The Ohio State University, 174 W. 18th Ave., Columbus, Oh, 43210, USA
K. Sellgren
Affiliation:
The Ohio State University, 174 W. 18th Ave., Columbus, Oh, 43210, USA
D. M. Terndrup
Affiliation:
The Ohio State University, 174 W. 18th Ave., Columbus, Oh, 43210, USA

Abstract

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We present radial velocities for approximately 40 stars in each of four optically obscured, off-axis fields toward the Galactic bulge. The mean heliocentric radial velocity and velocity dispersion are −75 ± 24 km s–1 and 127 ± 16 km s–1 2 ± 23 km s–1 and 127 ± 14 km s–1, −14 ± 22 km s–1 and 126 ± 14 km s–1, and −31 ± 28 km s–1 and 153 ± 17 km s–1 for fields located at 299, 288, 171, and 160 pc projected radius, respectively. The dispersions generally match Kent's (1992) axisymmetric mass model but may be higher than the model's predictions at small projected radius.

Type
Chapter 2: Is the Milky Way a Barred Spiral Galaxy?
Information
Symposium - International Astronomical Union , Volume 169: Unsolved Problems of the Milky Way , 1996 , pp. 111 - 117
Copyright
Copyright © Kluwer 1996 

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