J/A+A/526/A114 Kinematic profiles of Virgo early-type galaxies (Toloba+, 2011)
Formation and evolution of dwarf early-type galaxies in the Virgo cluster.
I. Internal kinematics.
Toloba E., Boselli A., Cenarro A.J., Peletier R.F., Gorgas J.,
Gil de Paz A., Munoz-Mateos J.C.
<Astron. Astrophys. 526, A114 (2011)>
=2011A&A...526A.114T 2011A&A...526A.114T
ADC_Keywords: Clusters, galaxy ; Galaxies, rotation ; Velocity dispersion ;
Rotational velocities
Keywords: galaxies: clusters: individual: Virgo - galaxies: dwarf -
galaxies: elliptical and lenticular, cD -
galaxies: kinematics and dynamics - galaxies: evolution -
galaxies: dark matter
Abstract:
We present new medium resolution kinematic data for a sample of 21
dwarf early-type galaxies (dEs) mainly in the Virgo cluster, obtained
with the WHT and INT telescopes at the Roque de los Muchachos
Observatory (La Palma, Spain). These data are used to study the origin
of the dwarf elliptical galaxy population inhabiting clusters.
Description:
The observing time that we obtained for this work was part of the
International Time Program (ITP 2005-2007) at El Roque de los
Muchachos Observatory. Here we focus on the medium resolution
(R∼3800), long-slit spectroscopy carried out during three observing
runs. In runs 1 and 3 (December 2005, February 2007) we used the ISIS
double-arm spectrograph at the 4.2m WHT, and in run 2 (January 2007)
we used the IDS spectrograph at the INT (2.5m telescope).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 101 22 The observed galaxies
table3.dat 55 788 Kinematic profiles for each of the galaxies
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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- 10 A10 --- Name Name of the galaxy
12- 34 A23 --- OName Other name
36- 37 I2 h RAh Right ascension (J2000)
39- 40 I2 min RAm Right ascension (J2000)
42- 46 F5.2 s RAs Right ascension (J2000)
48 A1 --- DE- Declination sign (J2000)
49- 50 I2 deg DEd Declination (J2000)
52- 53 I2 arcmin DEm Declination (J2000)
55- 58 F4.1 arcsec DEs Declination (J2000)
60- 68 A9 --- MType Morphological type
70- 84 A15 --- Group Environment
86 I1 --- Run Run number
88- 91 I4 s texp Exposure time
93- 95 I3 deg PA Position angle
97-101 F5.3 mag E(B-V) Redenning
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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- 11 A11 --- Name Name of the galaxy
13- 18 F6.2 arcsec RVel Radius of the velocity profile
21- 25 F5.1 km/s Vel Velocity
29- 32 F4.1 km/s e_Vel Error of the velocity
36- 41 F6.2 arcsec Rsigma ? Radius of the velocity dispersion profile
45- 48 F4.1 km/s sigma ? Velocity dispersion
52- 55 F4.1 km/s e_sigma ? Error of the velocity dispersion
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Acknowledgements:
Elisa Toloba, etj(at)astrax.fis.ucm.es
(End) Patricia Vannier [CDS] 18-Nov-2010