J/MNRAS/401/2113 GHASP: Hα data cubes for 153 galaxies (Epinat+, 2010)
Evidence for strong dynamical evolution in disc galaxies through the last 11Gyr.
GHASP VIII. A local reference sample of rotating disc galaxies for high-redshift
studies.
Epinat B., Amram P., Balkowski C., Marcelin M.
<Mon. Not. R. Astron. Soc., 401, 2113-2147 (2010)>
=2010MNRAS.401.2113E 2010MNRAS.401.2113E
ADC_Keywords: Galaxy catalogs; Radial velocities; Morphology
Keywords: galaxies: evolution - galaxies: formation - galaxies: high-redshift -
galaxies: irregular - galaxies: kinematics and dynamics -
galaxies: spiral
Abstract:
Due to their large distances, high-redshift galaxies are observed at
a very low spatial resolution. In order to disentangle the evolution
of galaxy kinematics from low-resolution effects, we have used
Fabry-Perot 3D Hα data cubes of 153 nearby isolated galaxies
selected from the Gassendi Hα survey of SPirals (GHASP) to
simulate data cubes of galaxies at redshift z=1.7 using a pixel size
of 0.125" and a 0.5" seeing. We have derived Hα flux, velocity
and velocity dispersion maps.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tableb1.dat 67 153 Galaxy parameters at z=0
tableb2.dat 72 153 Exponential disk model on the sample projected
at z=1.7
tableb3.dat 72 153 Isothermal sphere model on the sample projected
at z=1.7
tableb4.dat 72 153 Flat model on the sample projected at z=1.7
tableb5.dat 72 153 Arctangent model on the sample projected at z=1.7
tableb6.dat 39 153 Parameters computed without beam smearing
correction for the sample projected at z= 1.7
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See also:
VII/237 : HYPERLEDA. I. Catalog of galaxies (Paturel+, 2003)
J/MNRAS/388/500 : GHASP: Hα data cubes for 108 galaxies (Epinat+, 2008)
J/MNRAS/390/466 : GHASP: Hα data cubes for 97 galaxies (Epinat+, 2008)
Byte-by-byte Description of file: tableb1.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Galaxy Galaxy name (UGC NNNNNA)
12- 13 I2 deg i Inclination at z=0 from Epinat et al.
(2008, Cat. J/MNRAS/390/466)
15- 16 I2 deg e_i rms uncertainty on i
18- 21 I4 deg PA [-180/300] Position angle of the major axis at
z=0 from Epinat et al. 2008 (J/MNRAS/390/466)
23- 24 I2 deg e_PA rms uncertainty on PA
26- 29 F4.1 kpc D25/2 Optical radius from RC3 (VII/155) catalog
30 A1 --- r_D25/2 [*] * if D25/2 from HyperLeda database,
Paturel et al., 2003, Cat. VII/237
32- 36 F5.1 mag BMAG ?=- Absolute B-band magnitude from the
HyperLeda database (Cat. VII/237)
38- 40 I3 km/s Vmaxc Maximum velocity from Epinat et al.
(2008, Cat. J/MNRAS/390/466)
42- 44 I3 km/s e_Vmaxc rms uncertainty on Vmaxc
46- 47 I2 km/s sigma Mean local velocity dispersion
49- 50 I2 km/s e_sigma rms uncertainty on sigma
52- 55 F4.1 --- Vm/sig ?=- Vmax to sigma ratio
57- 60 F4.1 --- e_Vm/sig ?=- rms uncertainty on Vmaxc/sigma
62- 64 I3 km/s/kpc Sin ?=- Inner slope of the rotation curve (1)
66- 67 I2 km/s/kpc e_Sin ?=- rms uncertainty on Sin
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Note (1): No value is provided when no high resolution rotation curve is
computed (edge on galaxies, Epinat et al. 2008, Cat. J/MNRAS/390/466,
2009A&A...504..789E 2009A&A...504..789E).
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Byte-by-byte Description of file: tableb[2345].dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Galaxy Galaxy name (UGC NNNNNA) (1)
12- 13 I2 deg i ? Inclination at z=1.7 deduced from the fit
15- 16 I2 deg e_i ? Statistical error on i (lower limit)
17 A1 --- n_i [*] * indicates that inclination was stacked
to one boundary
19- 22 I4 deg PA [-180/300]? Position angle of the major axis
at z=1.7 (2)
24- 25 I2 deg e_PA ? Statistical error on PA (lower limit)
27- 30 F4.1 kpc rt ? Scale length radius of the model
(defined in Appendix A) (2)
32- 35 F4.1 kpc e_rt ? Statistical error on rt (lower limit)
36 A1 --- n_rt [i] i for infinity
38- 40 I3 km/s Vt ? Velocity of the model
(defined in Appendix A) (2)
42- 44 I3 km/s e_Vt ? Statistical error on Vt (lower limit)
45 A1 --- n_Vt [i] i for infinity
47- 49 I3 km/s Vmaxc ? Maximum velocity of the model within Rlast
(in tableb6.dat) (3)
51- 52 I2 km/s sigma ? Local velocity dispersion
(beam smearing corrected)
54- 55 I2 km/s e_sigma ? rms uncertainty on sigma
57 A1 --- l_sigma [>] Limit flag on sigma
58- 62 F5.1 --- Vm/sig ? Vmax to sigma ratio
64- 66 I3 km/s DVm ? Mean difference of the model rotation curve
with the actual rotation curve at z=0
68- 71 I4 km/s/kpc Sin ? Inner slope of the rotation curve from
the model
72 A1 --- n_Sin [*] * indicates that only the slope is
constrained by the model
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Note (1): Galaxies for which no parameter is provided are those for which
the fit was not possible.
Note (2): deduced from the fit with the inclination fixed to the value in
tableb1.dat.
Note (3): rms uncertainty on Vmaxc is the same as e_Vt and thus not take
into account the uncertainty on the inclination.
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Byte-by-byte Description of file: tableb6.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Galaxy Galaxy name (UGC NNNNNA)
12- 14 F3.1 --- B Beam smearing parameter: B=(D25/2)/(s),
s being the seeing
16- 18 I3 km/s Vmaxc ? Maximum velocity measured on the along the
major axis at z=1.7
20- 22 I3 km/s sig0 Central velocity dispersion from the
uncorrected velocity dispersion map
24- 25 I2 km/s sig0min Mean velocity dispersion from the 20% smallest
values
27- 30 F4.1 --- Vm/sig ? Vmax to sigma ratio
32- 34 I3 km/s DVm ? Mean difference of the rotation curve
measured along the major axis at z=1.7 with
the actual rotation curve at z=0
36- 39 F4.1 kpc Rlast Radius of the last point
(maps were cut at D25/2)
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Acknowledgements:
Benoit Epinat, benoit.epinat(at)ast.obs-mip.fr
References:
Garrido et al., Paper I 2002A&A...387..821G 2002A&A...387..821G
Garrido et al., Paper II 2003A&A...399...51G 2003A&A...399...51G
Garrido et al., Paper III 2004MNRAS.349..225G 2004MNRAS.349..225G
Garrido et al., Paper IV 2005MNRAS.362..127G 2005MNRAS.362..127G
Spano et al., Paper V 2008MNRAS.383..297S 2008MNRAS.383..297S
Epinat et al., Paper VI 2008MNRAS.388..500E 2008MNRAS.388..500E, Cat. J/MNRAS/388/500
Epinat et al., Paper VII 2008MNRAS.390..466E 2008MNRAS.390..466E, Cat. J/MNRAS/390/466
(End) Patricia Vannier [CDS] 07-Jun-2010