J/A+AS/122/507 J/A+AS/122/507 Kinematics of SMC carbon stars D Hatzidimitriou B F Croke D H Morgan R D Cannon Astron. Astrophys. Suppl. Ser. 122 507 1997 1997A&AS..122..507H J/A+AS/97/603 : C stars in SMC (RAW93) J/A+AS/113/539 : A survey of carbon stars in the SMC (Morgan+, 1995) Magellanic Clouds Stars, carbon galaxies: kinematics and dynamics Magellanic Clouds stars: carbon 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 +/-2-5km/s. The mean heliocentric velocity of the stars (excluding one very high velocity star) is 149.3+/-3.0km/s with a velocity dispersion of 25.2+/-2.1km/s. These values drop to 145.5+/-2.7km/s and 20.6+/-1.9km/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 =~1.2x10^9^M_{sun}_.

MH Star name number=1 In table1a, names from the Morgan and Hatzidimitriou (1995, Cat. <J/A+AS/113/539>) catalogue --- RAh Right ascension (J2000) h RAm Right ascension (J2000) min RAs Right ascension (J2000) s DE- Declination sign --- DEd Declination (J2000) deg DEm Declination (J2000) arcmin DEs Declination (J2000) arcsec Dist Projected radial distance of each star from the dynamical centre of the SMC number=2 1 degree corresponds to approximately 1kpc at the distance of the SMC deg o_Dist Number of observations secured in each case --- HRV Derived heliocentric radial velocity (LSR) km/s ccp Height of the cross-correlation peak --- Obs Run during which the observations were made --- table1.texLaTex version of table1 Patricia Bauer CDS 1996Sep03Despina Hatzidimitriou <dh@physics.uch.gr> J_A+AS_122_507.xml