Astron. Astrophys. Suppl. Ser.
Volume 122, Number 3, May I 1997
|Page(s)||507 - 513|
|Published online||15 May 1997|
Kinematics of carbon stars in the outer regions of the Small Magellanic Cloud*
Physics Department, University of Crete, P.O.Box 2208, GR 710 03, Heraklion, Crete, Greece
2 Royal Observatory Edinburgh, Blackford Hill, Edinburgh EH9 3HJ, Scotland, UK
3 Anglo-Australian Observatory, PO Box 296, Epping, NSW 2121, Australia
Accepted: 22 August 1996
We present a radial velocity survey of a sample of the field population of carbon stars in the outer parts of the Small Magellanic Cloud (SMC). This first set of results includes radial velocities for 71 carbon stars, with an individual precision of km/s. The mean heliocentric velocity of the stars (excluding one very high velocity star) is km/s with a velocity dispersion of km/s. These values drop to km/s and km/s respectively, if we exclude the stars belonging to the Outer Wing. The velocity distribution does not show the multiple peaks seen in some samples of Population I objects. The mass of the SMC as inferred from the above velocity dispersion (without the outer Wing stars) is .
Key words: stars: carbon stars / galaxies: kinematics / Magellanic clouds
Tables 1a and 1b are available in electronic form at the CDS via anonymous ftp 22.214.171.124 or http://cdsweb.u-strasbg.fr/abstract.html
© European Southern Observatory (ESO), 1997