J/A+AS/133/317 Stellar kinematics in spiral galaxies (Heraudeau+ 1998)
Stellar kinematical data for the central region of spiral galaxies
Heraudeau P., Simien F.
<Astron. Astrophys. Suppl. Ser. 133, 317 (1998)>
=1998A&AS..133..317H 1998A&AS..133..317H (SIMBAD/NED BibCode)
ADC_Keywords: Galaxies, rotation ; Radial velocities ; Rotational velocities ;
Velocity dispersion
Keywords: galaxies: spiral - galaxies: general -
galaxies: kinematics and dynamics
Abstract:
We present the results of absorption spectroscopy on the inner region
of 34 Sa-Sc galaxies. We have determined the central velocity
dispersion and, for 32 of these objects, stellar rotation curves and
velocity-dispersion profiles. Some of these profiles are limited to
the bulge, some others do reach a region dominated by the luminosity
of the disk. These data are intended to provide basic material for the
study of the mass distribution and dynamical status in the central
regions of spiral galaxies. Although no elaborate bulge-and-disk
photometric decomposition is performed, we estimate the effects of
limited resolution and contamination by disk light on the central
velocity dispersion of the bulge.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 87 34 Catalog elements and kinematical results
table2.dat 43 37 Log of the observations
table3.dat 37 874 Profiles of velocity dispersion and rotation
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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/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/131/105 : NGC 6221 ionized gas kinematics (Vega Beltran+ 1998)
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: table1.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- Name ! Object identification
11-14 A4 --- Mtype *! Morphological type
16-17 I2 h RAh ! Right Ascension 1950 (hours)
19-20 I2 min RAm ! Right Ascension 1950 (minutes)
22-25 F4.1 s RAs ! Right Ascension 1950 (seconds)
27 A1 --- DE- ! Declination 1950 (sign)
28-29 I2 deg DEd ! Declination 1950 (degrees)
31-32 I2 arcmin DEm ! Declination 1950 (minutes)
34-35 I2 arcsec DEs ! Declination 1950 (seconds)
37-41 F5.2 mag Btc ! Corrected integrated blue magnitude
43-47 F5.1 arcmin D25 ! Diameter at 25 B mag/arcsec**2
49-52 F4.2 --- Eps ! Ellipticity
54-56 I3 deg PA *?=999 Position angle of major axis
58-63 F6.2 mag Mb *! Absolute blue magnitude
65-69 I5 km/s HRV ! Heliocentric radial velocity
70 A1 --- u_HRV Uncertainty flag on HRV
71-73 I3 km/s e_HRV ?=999 Mean error on HRV
75-77 I3 km/s sig0 ?=999 Central velocity dispersion
78 A1 --- u_sig0 Uncertainty flag on sig0
79-81 I3 km/s e_sig0 ?=999 Mean error on sig0
83-86 F4.2 --- fbulge *?=9.99 Resolution effect on bulge kinematics
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Note on Mtype:
Parameters Mtype through Mb are catalog elements from the LEDA database
(status: LEDA1998).
Parameters HRV through fbulge are determinations of the present work
Note on PA:
PA (North --> East) as given in the range [0, 180[ by the LEDA database
(status: LEDA1996).
Note on Mb:
Mb calculated from Btc and kinematical distance modulus, with H=75km/s/Mpc
Note on fbulge:
Factor indicating the degree to which resolution effects and
contamination by disk light have influenced the observed central bulge
kinematics; σ0/fbulge is then a closer approximation to the
averaged, luminosity weighted bulge velocity dispersion within 0.1re
(see Sect. 5 and the Appendix).
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- Name ! Object identification
11-18 A8 "DD/MM/YY" Date ! Date of observation (dd/mm/yy)
20 I1 --- Setup *! Spectrograph setup
22-24 I3 deg PA *! Position angle of slit
26 I1 --- Nexp ! Number of exposures
28-30 I3 min Texp ! Exposure time
32-34 F3.1 arcsec Seeing ?=9.9 Seeing FWHM
35 A1 --- u_Seeing Uncertainty flag on Seeing
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Note on Setup:
Setup=1 corresponds to a dispersion of 66 Angtroems per mm
Setup=2 corresponds to a dispersion of 33 Angtroems per mm
Note on PA:
PA (North --> East) is in the range [0, 360[, and with the following
convention on the subsequent radius r in the profiles (Table 3):
- 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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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
11-13 I3 deg PA *! Position angle of slit
15-20 F6.1 arcsec r *! Radius (<0 and >0 on opposite semi-axes)
22-25 I4 km/s Vrot *?=999 Proj. mean stellar rotation velocity
27-29 I3 km/s e_Vrot ?=999 Mean error on Vrot
31-33 I3 km/s sigma *?=999 Projected velocity dispersion
35-37 I3 km/s e_sigma ?=999 Mean error on sigma
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Note on Vrot and sigma:
Rotation and dispersion velocities are projected along the line of sight;
rotation values are with respect to the point r=0.
Note on PA and r:
PA (North --> East) is in the range [0, 360[, and with the following
convention:
- 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] 08-Oct-1998