J/A+A/440/107 Gas velocity curve along five spiral galaxies (Coccato+, 2005) ================================================================================ Spiral galaxies with a central plateau in the gas velocity curve along the major axis. Coccato L., Corsini E.M., Pizzella A., Bertola F. =2005A&A...440..107C ================================================================================ ADC_Keywords: Galaxies, rotation ; Radial velocities ; Velocity dispersion Keywords: galaxies: kinematics and dynamics - galaxies: spirals - galaxies: structure Abstract: We present the minor-axis kinematics of ionized gas and stars for a sample of 5 spiral galaxies, which are characterized by either a zero or a shallow gas velocity gradient along their major axis. The asymmetric velocity profiles observed along the minor axis of NGC 4064 and NGC 4189 can be explained as due to the presence of a bar. This is also the case of NGC 4178 where the innermost portion of the gaseous disk is nearly face on. In NGC 4424 and NGC 4941, we measured non-zero gas velocities only in the central regions along the minor axis and gas velocities drop to zero at larger radii. This kinematic feature is suggestive of the presence of an orthogonally-rotating gaseous component which is confined in the innermost regions (i.e. an inner polar disk) to be confirmed with integral-field spectroscopy. Objects: ---------------------------------------------------------- RA (2000) DE Designation(s) ---------------------------------------------------------- 12 04 11.3 +18 26 38 NGC 4064 = UGC 7054 12 12 46.5 +10 51 57 NGC 4178 = IC 3042 12 13 47.4 +13 25 28 NGC 4189 = IC 3050 12 27 12.0 +09 25 12 NGC 4424 = UGC 7561 13 04 13.1 -05 33 06 NGC 4941 = UGCA 321 ---------------------------------------------------------- File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file table1.dat 66 232 Gas and stellar kinematics for the sample galaxies -------------------------------------------------------------------------------- See also: J/A+A/424/447 : Kinematics in 17 nearby spiral galaxies (Pizzella+, 2004) J/A+AS/133/317 : Stellar kinematics in spiral galaxies (Heraudeau+ 1998) J/A+AS/136/509 : Stellar kinematics in spiral galaxies. II. (Heraudeau+ 1999) J/AJ/121/225 : Photometry and kinematics of NGC 1433 & NGC 6300 (Buta+, 2001) Byte-by-byte Description of file: table1.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 3 A3 --- --- [NGC] 4- 7 I4 --- NGC NGC number of the galaxy 9- 11 I3 deg PA Position angle of the slit (1) 14- 18 A5 --- Comp Kinematical component (gas or stars) 23- 28 F6.2 arcsec Rad [-88/121] Radius (1) 30- 33 I4 km/s Vel Velocity 39- 40 I2 km/s e_Vel Velocity error 45- 47 I3 km/s sigma Velocity dispersion 53- 54 I2 km/s e_sigma Lower Velocity dispersion error 60- 61 I2 km/s E_sigma Upper Velocity dispersion error -------------------------------------------------------------------------------- Note (1): Slit position angle: PA (North --> East) as given in the range [0, 180], and with the following convention: for 0 < PA < 90; R>0 = NE side ; R<0 = SW side for 90 < PA < 180: R>0 = SE side ; R<0 = NW side. -------------------------------------------------------------------------------- Acknowledgements: Lodovico Coccato, coccato(at)astro.rug.nl ================================================================================ (End) Patricia Vannier [CDS] 28-Jul-2005