J/A+A/455/107 3D spectroscopy with VLT/GIRAFFE (Flores+, 2006)
3D spectroscopy with VLT/GIRAFFE.
I. The true Tully-Fisher relationship at z∼0.6.
Flores H., Hammer F., Puech M., Amram P., Balkowski C.
<Astron. Astrophys., 455, 107-118 (2006)>
=2006A&A...455..107F 2006A&A...455..107F
ADC_Keywords: Galaxies, photometry ; Morphology ; Redshifts
Keywords: galaxies: kinematics and dynamics - galaxies: evolution -
galaxies: formation
Abstract:
A precise derivation of the evolution of the Tully-Fisher is crucial
to understand the interplay between dark matter and baryonic matter in
cosmological models, using 15 deployable integral field units of
FLAMES/GIRAFFE at VLT, we have recovered the velocity fields of 35
galaxies at intermediate redshift (0.4<z<0.75). This facility is
able to recover the velocity fields of almost all the emission line
galaxies with IAB≤22.5 and W0(OII)≥15Å. In our sample, we
find only 35% rotating disks. These rotating disks produce a
Tully-Fisher relationship (stellar mass or MK versus Vmax which has
apparently not evolved in slope, zero point and scatter since z=0.6).
The only evolution found is a brightening of the B band luminosity of
a third of the disks, possibly due to an enhancement of the star
formation. The very large scatters found in previously reported
Tully-Fisher relationships at moderate redshifts are caused by the
numerous (65%) galaxies with perturbed or complex kinematics. Those
galaxies include minor or major mergers, merger remnants and/or
inflow/outflows and their kinematics can be easily misidentified by
slit spectroscopy. Their presence suggests a strong evolution in the
dynamical properties of galaxies during the last 7Gyr.
Description:
A total of 5 nights were allocated during the FLAMES/GIRAFFE
guaranteed time to study the kinematics of distant galaxies
(ESO runs 071.B-0322(A) and 072.A-0169(A)).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 108 32 Main properties of the sample of distant galaxies
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See also:
VII/225 : The Canada-France Redshift Survey (CFRS) (Lilly+, 1995)
J/AJ/120/2747 : HDF-South WFPC2 observations (Casertano+, 2000)
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 Galaxy name (CFRSNNNNNN or HDFSNNNN) (1)
13- 14 I2 h RAh Right ascension (J2000)
16- 17 I2 min RAm Right ascension (J2000)
19- 24 F6.3 s RAs Right ascension (J2000)
26 A1 --- DE- Declination sign (J2000)
27- 28 I2 deg DEd Declination (J2000)
30- 31 I2 arcmin DEm Declination (J2000)
33- 37 F5.2 arcsec DEs Declination (J2000)
39- 44 F6.4 --- z Redshift
46- 50 F5.2 mag Imag I isophotal magnitude in AB system
52- 57 F6.2 mag BMAG Absolute B magnitude in AB system
59- 64 F6.2 mag BMAGv Absolute B magnitude in Vega system
66- 71 F6.2 mag KMAG ?=99.99 Absolute K magnitude in AB system
73- 78 F6.2 mag KMAGv ?=99.99 Absolute K magnitude in Vega system
80- 84 F5.2 [solMass] logM ?=99.99 Stellar mass
86- 88 A3 --- Image Image origin (hst, cfh or acs)
90- 93 F4.2 kpc rh Half light radius
95- 96 I2 deg Incl Inclination
98 I1 --- Cm [0/1] Morphological compactness flag
(1 = compact)
100-105 F6.2 km/s Vel Maximal gradient of the velocity field
corrected from inclination and from
instrumental effect
107-108 A2 --- CD Kinematical classification (2)
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Note (1): CFRSNNNNNN are identified as CFRS NN.NNNN in Cat. VII/225
Note (2): Kinematical classification as follows:
RD = rotating disk
PR = perturbed rotations
CK = complex kinematics
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 05-Feb-2007