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J/A+AS/131/105      NGC 6221 ionized gas kinematics (Vega Beltran+ 1998)

Mixed early and late-type properties in the bar of NGC 6221: evidence for evolution along the Hubble sequence? Vega Beltran J.C., Zeilinger W.W., Amico P., Schultheis M., Corsini E.M., Funes J.G., Beckman J., Bertola F. <Astron. Astrophys. Suppl. Ser. 131, 105 (1998)> =1998A&AS..131..105V (SIMBAD/NED BibCode)
ADC_Keywords: Galaxies, Seyfert ; Velocity dispersion Keywords: galaxies: individual: NGC 6221 - galaxies: kinematics and dynamics - galaxies: structure - galaxies: evolution - galaxies: spiral Abstract: Rotation curves and velocity dispersion profiles are presented for both the stellar and gaseous components along five different position angles (PA =5°, 50°, 95°, 125°, and 155°) of the nearby barred spiral NGC 6221. The observed kinematics extends out to about 80'' from the nucleus. Narrow and broad-band imaging is also presented. The radial profiles of the fluxes ratio [NII] (λ 6583.4Å)/Hα reveal the presence of a ring-like structure of ionized gas, with a radius of about 9'' and a deprojected circular velocity of about 280km/s. The analysis of the dynamics of the bar indicates this ring is related to the presence of an inner Lindblad resonance (ILR) at 1.3kpc. NGC 6221 is found to exhibit intermediate properties between those of the early-type barred galaxies: the presence of a gaseous ring at an ILR, the bar edge located between the ILR's and the corotation radius beyond the steep rising portion of the rotation curve, the dust-lane pattern, and those of the late-type galaxies: an almost exponential surface brightness profile, the presence of Hα regions along all the bar, the spiral-arm pattern. It is consistent with scenarios of bar-induced evolution from later to earlier-type galaxies. Objects: ---------------------------------------------------------- RA (2000) DE Designation(s) ---------------------------------------------------------- 16 52 47 -59 13.0 NGC 6221 ---------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table3.dat 68 51 Stellar kinematics for PA: 5, 50, 95, 125 & 155° table4.dat 71 55 Ionized gas kinematics for PA=5 (Major Axis) table5.dat 71 108 Ionized gas kinematics for PA=50 table6.dat 71 122 Ionized gas kinematics for PA=95 (Minor Axis) table7.dat 71 81 Ionized gas kinematics for PA=125 (Bar Major Axis) table8.dat 71 78 Ionized gas kinematics for PA=155
See also: J/A+A/360/439 : Stellar and ionized gas kinematics in NGC 4672 (Sarzi+, 2000) J/A+A/374/394 : Gas and stars kinematics in disc galaxies (Vega Beltran+ 2001) J/A+AS/105/433 : Kinematical data of 14 early-type galaxies (Longo+ 1994) 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/A+AS/122/521 : Kinematical data on early-type galaxies. I. (Simien+ 1997) J/A+AS/126/15 : Kinematical data on early-type galaxies. II. (Simien+ 1997) J/A+AS/126/519 : Kinematical data on early-type galaxies. III. (Simien+ 1997) J/A+AS/131/287 : Kinematical data on early-type galaxies. IV. (Simien+ 1998) J/A+AS/145/263 : Kinematical data on early-type galaxies. V. (Simien+, 2000) J/A+AS/127/117 : Kinematics of galaxies (Prugniel+ 1998) J/A+A/382/488 : Stellar and ionized gas kinematics in NGC 2855 (Corsini+ 2002) Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 3 I3 deg PA Position angle 6- 10 F5.1 arcsec Rad [-90/90] Radius 15- 18 I4 km/s Vel Velocity 22- 23 I2 km/s e_Vel Velocity error 27- 29 I3 km/s sigmaVel Velocity dispersion 32- 33 I2 km/s e_sigmaVel Velocity dispersion error 38- 43 F6.3 --- h3 h3 Gauss-Hermite coefficient 46- 50 F5.3 --- e_h3 h3 Gauss-Hermite coefficient error 55- 60 F6.3 --- h4 h4 Gauss-Hermite coefficient 63- 67 F5.3 --- e_h4 h4 Gauss-Hermite coefficient error
Byte-by-byte Description of file: table[45678].dat
Bytes Format Units Label Explanations
1- 5 F5.1 arcsec Rad [-90/90] Radius 9- 12 I4 km/s HVHa Hα observed heliocentric velocity 16- 17 I2 km/s e_HVHa Hα observed heliocentric velocity error 21- 23 I3 km/s sigmaHVHa Hα velocity dispersion 28- 31 I4 km/s HVNII Observed [NII] heliocentric velocity 35- 36 I2 km/s e_HVNII Observed [NII] heliocentric velocity error 40- 42 I3 km/s sigmaHVNII velocity dispersion of [NII] 46- 49 F4.2 --- [NII]/Ha Flux ratio [NII]/Hα 53- 56 I4 km/s HV Averaged ionized gas heliocentric velocity 60- 61 I2 km/s e_HV Averaged ionized gas velocity error 65- 67 I3 km/s sigmaHV Averaged velocity dispersion 70- 71 I2 km/s e_sigmaHV Averaged velocity dispersion error
Acknowledgements: Juan Carlos Vega
(End) Patricia Bauer [CDS] 24-Feb-1998
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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