J/A+AS/139/483 Early-type gal. kinematics in compact groups (Bonfanti+, 1999)
Kinematics of early-type galaxies in compact groups. HCG 67, HCG 74, and HCG 79
Bonfanti, P., Simien, F., Rampazzo, R., Prugniel, P.
<Astron. Astrophys. Suppl. Ser. 139, 483 (1999)>
=1999A&AS..139..483B 1999A&AS..139..483B (SIMBAD/NED BibCode)
ADC_Keywords: Radial velocities ; Galaxies, rotation ; Velocity dispersion ;
Clusters, galaxy
Keywords: galaxies: kinematics & dynamics - galaxies: interactions -
galaxies: elliptical and lenticular, cD - galaxies: formation -
galaxies: evolution
Abstract:
We present measurements of stellar kinematics for seven early-type
galaxies in HCG 67, HCG 74, and HCG 79. These data are aimed at
studying the relation between the environment and the dynamics,
structure and stellar content of early-type galaxies. In the present
three groups, the kinematic features we observed cannot be associated
unambiguously to physical interactions. Visible morphological
peculiarities do not appear correlated with kinematical perturbations.
Objects:
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RA (2000) DE Designation(s)
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13 49 11.3 -07 13 27.6 HCG 67a
13 49 09.7 -07 13 54.3 HCG 67d
15 19 24.7 +21 06 20.3 HCG 74a
15 19 24.4 +20 53 23.4 HCG 74b
15 59 11.4 +20 45 14.9 HCG 79a
15 59 12.6 +20 45 47.1 HCG 79b
15 59 10.9 +20 45 41.4 HCG 79c
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 24 7 Main kinematical parameters from this study
table4.dat 38 182 Profiles of rotation and velocity dispersion
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See also:
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)
Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- Name Object identification
10- 14 I5 km/s V0hel Heliocentric systemic velocity
16- 17 I2 km/s e_V0hel Mean error on V0hel (rms)
19- 21 I3 km/s sigma0 Projected central velocity dispersion
23- 24 I2 km/s e_sigma0 Mean error on sigma0
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- Name Object identification
11- 13 I3 deg PA Position angle of slit (1)
15- 20 F6.1 arcsec r Radius (<0 and >0 on opposite semi-axes) (1)
22- 26 I5 km/s Vrot ?=999 Proj. mean stellar rotation velocity (2)
28- 30 I3 km/s e_Vrot ?=999 Mean error on Vrot
32- 34 I3 km/s sigma ?=999 Projected velocity dispersion (2)
36- 38 I3 km/s e_sigma ?=999 Mean error on sigma
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Note (1): Rotation and dispersion velocities are projected along the line of
sight; rotation values are with respect to the point r=0 of the
component whose identification is given in bytes 1-9.
Note (2): For HCG67a, HCG79a, and HCG79b, PA has been shifted +180 degrees with
respect to the printed version, in order to conform to the convention
used by Simien & Prugniel (1997, Cat. J/A+AS/126/519), which is
recalled below.
PA (North --> East) is in the range [0, 360[, and:
- for 0<PA<180, r<0 corresponds to the eastern side of the galaxy,
- for 180<PA<360, r<0 corresponds to the western side,
- and for PA=0, r<0 is to the North.
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Acknowledgements: Francois Simien
(End) Patricia Bauer [CDS] 19-Oct-1999