J/MNRAS/390/466 GHASP: Hα data cubes for 97 galaxies (Epinat+, 2008)
GHASP: an Hα kinematic survey of 203 spiral and irregular galaxies.
VII. Revisiting the analysis of Hα data cubes for 97 galaxies.
Epinat B., Amram P., Marcelin M.
<Mon. Not. R. Astron. Soc., 390, 466-504 (2008)>
=2008MNRAS.390..466E 2008MNRAS.390..466E
ADC_Keywords: Galaxy catalogs ; Radial velocities ; Morphology
Keywords: galaxies: dwarf - galaxies: irregular -
galaxies: kinematics and dynamics - galaxies: spiral
Abstract:
The Gassendi HAlpha survey of SPirals survey (GHASP) consists of 3D
Hα data cubes for 203 spiral and irregular galaxies, covering
a large range in morphological types and absolute magnitudes, for
kinematics analysis. It is the largest sample of Fabry-Perot data
published up to now. In order to provide an homogenous sample, reduced
and analysed using the same procedure, we present in this paper the
new reduction and analysis for a set of 97 galaxies already published
in previous papers but now using the new data reduction procedure
adopted for the whole sample. The GHASP survey is now achieved and the
whole sample is reduced using the adaptive binning techniques based on
Voronoi tessellations. We have derived Hα data cubes from which
are computed Hα maps, radial velocity fields as well as residual
velocity fields, position-velocity diagrams, rotation curves and
kinematical parameters for almost all galaxies. The rotation curves,
the kinematical parameters and their uncertainties are computed
homogeneously using the new method based on the power spectrum of the
residual velocity field. This paper provides the kinematical
parameters for the whole sample. For the first time, the integrated
Hα profiles have been computed and are presented for the whole
sample. The total Hα fluxes deduced from these profiles have
been used in order to provide a flux calibration for the 203 GHASP
galaxies. This paper confirms the conclusions already drawn from half
the sample concerning (i) the increased accuracy of position angles
measurements using kinematical data, (ii) the difficulty to have
robust determinations of both morphological and kinematical
inclinations in particular for low-inclination galaxies and (iii) the
very good agreement between the Tully-Fisher relationship derived
from our data and previous determinations found in the literature.
Description:
The GHASP survey was originally selected to be a subsample
complementing the radio survey Westerbork survey of HI in SPirals
galaxies (WHISP) providing HI distribution and velocity maps for about
400 galaxies (http://www.astro.rug.nl/whisp). The first set of GHASP
galaxies was selected from the first WHISP website list but some of
them have never been observed by WHISP.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tableb1.dat 76 203 Calibration parameters
tableb2.dat 97 203 Model parameters
tableb3.dat 97 203 Galaxy parameters
tablef.dat 43 4208 Rotation curves for 82 galaxies
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See also:
J/MNRAS/388/500 : GHASP: Hα data cubes for 108 galaxies (Epinat+, 2008)
Byte-by-byte Description of file: tableb1.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 9 A9 --- Name Galaxy name
11- 15 I5 --- UGC ? UGC number
16 A1 --- m_UGC [c] Multiplicity index on UGC
18- 21 I4 --- NGC ? NGC number
22 A1 --- m_NGC [A] Multiplicity index on NGC
24- 25 I2 h RAh Right ascension (J2000) (1)
27- 28 I2 min RAm Right ascension (J2000) (1)
30- 33 F4.1 s RAs Right ascension (J2000) (1)
35 A1 --- DE- Declination sign (J2000) (1)
36- 37 I2 deg DEd Declination (J2000) (1)
39- 40 I2 arcmin DEm Declination (J2000) (1)
42- 43 I2 arcsec DEs Declination (J2000) (1)
45- 49 I5 s ExpTime Exposure time
51- 54 F4.2 arcsec Scale Pixel scale (arcsec/pix)
56- 57 A2 --- l_Flux [≥ ] Limit flag on Flux
58- 62 F5.1 10-16W/m2 Flux ? Integrated Hα flux deduced from the
comparison with James et al. (2004,
Cat. J/A+A/414/23) data (2)
64- 67 F4.1 10-16W/m2 e_Flux ? rms uncertainty on Flux
69- 76 A8 --- Pap Publication papers
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Note (1): Coordinates of the centre of the galaxy used for the kinematic study.
Note (2): When the galaxy is larger than the field of view (see tableb3.dat),
we only have a lower limit on the integrated Hα flux.
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Byte-by-byte Description of file: tableb2.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 9 A9 --- Name Galaxy name
11- 14 I4 km/s VsysL Systemic velocity found in HyperLeda data base
16- 17 I2 km/s e_VsysL rms uncertainty on VsysL
19- 22 I4 km/s Vsys ?=- Systemic velocity deduced from our
velocity field analysis
24- 26 I3 km/s e_Vsys ?=- rms uncertainty on Vsys
28- 29 I2 deg iM Morphological inclination from HyperLeda
(Paturel et al., 1997, Cat. VII/237)
31- 32 I2 deg e_iM rms uncertainty on iM
34- 35 I2 deg iK ?=- Inclination deduced from the analysis of
our velocity field
37- 38 I2 deg e_iK ?=- rms uncertainty on iK
39 A1 --- n_iK [*] * for fixed value (3)
42- 44 I3 deg PA1 ? Morphological position angle
45 A1 --- r_PA1 [M] Reference for PA1 (4)
46 A1 --- --- [/]
47- 48 I2 deg PA2 ? Morphological position angle
49- 50 A2 --- r_PA2 [Ha ] Reference for PA2 (4)
51 A1 --- --- [/]
52- 54 I3 deg PA3 ? Morphological position angle
55- 56 A2 --- r_PA3 [M Pa Va] Reference for PA3 (4)
57 A1 --- --- [/]
58- 60 I3 deg PA4 ? Morphological position angle
61- 62 A2 --- r_PA4 [Ha M Ni Pa] Reference for PA4 (4)
63 A1 --- --- [/]
64- 66 I3 deg PA ? Morphological position angle
67- 68 A2 --- r_PA [Ha M Ni Pa A Sp] Reference for PA (4)
70- 71 I2 deg e_PA ?=- rms uncertainty on PA
73- 75 I3 deg PA-FP ? Position angle deduced from our velocity field
76 A1 --- n_PA-FP [a] a indicates that the position angle refers
to the approaching side
78- 79 I2 deg e_PA-FP ? rms uncertainty on PA-FP
80 A1 --- f_PA-FP [*] * for PA that have been fixed equal to
morphological value
82 A1 --- l_Vres Limit flag on Vres
83- 89 F7.1 m/s Vres ? Mean residual velocity on the whole velocity
field
91- 92 I2 km/s sigres ? Residual velocity dispersion on the whole
velocity field
94- 97 F4.1 --- chi2 ? Reduced χ2 of the model
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Note (3): Those marked with an asterisk (*) have been fixed equal to
morphological value from HyperLeda, except UGC 9649, UGC 10359,
UGC 10470 for which we used morphological inclinations from NED, and
UGC 508, UGC 2023, UGC 2034, UGC 2455, UGC 4499, UGC 6118, UGC 6628,
UGC 9013, UGC 9363, UGC 10791 and UGC 12632 for which we used
inclinations determined from HI data (see tableb3.dat).
Note (4): Morphological position angle from HyperLeda, except for those
marked as follows:
Ha = Haynes et al., 1999AJ....117.1668H 1999AJ....117.1668H
Ni = Nilson, 1973, Cat. VII/26
Pa = Paturel et al., 2000A&AS..146...19P 2000A&AS..146...19P
S = 2006 Sloan Digital Sky Survey, DR5, http://www.sdss.org
Sp = Springob et al., 2007, Cat. J/ApJS/172/599
M = Two-Micron All-Sky Survey team 2003,
2MASS extended objects, Cat. VII/233
Va = Vauglin et al., 1999, Cat. J/A+AS/135/133
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Byte-by-byte Description of file: tableb3.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 9 A9 --- Name Galaxy name
11- 14 F4.1 --- T Morphological type from the de Vaucouleurs
classification (de Vaucouleurs 1979, VII/155)
in HyperLeda data base
16- 18 F3.1 --- e_T rms uncertainty on T Type
20- 30 A11 --- MType Morphological type from HyperLeda data base
32- 36 F5.1 Mpc Dist Distance (5)
37- 38 A2 --- r_Dist Reference for Distance (6)
40- 44 F5.1 mag BMAG ? Absolute B magnitude from Dist and apparent
corrected B magnitude (HyperLeda)
46- 49 F4.2 --- b/a Axis ratio from HyperLeda
51- 54 F4.2 --- e_b/a rms uncertainty on b/a
56- 57 I2 deg i Inclination derived from the axis ratio
(arccos(b/a))
59- 60 I2 deg e_i rms uncertainty on i
62- 65 I4 arcsec D25 Isophotal radius at the limiting surface
brightness of 25 Bmag/arcsec2, in arcsec (7)
67- 68 I2 arcsec e_D25 rms uncertainty on D25
69 A1 --- --- [/]
70- 73 F4.1 kpc D25kpc Isophotal radius at the limiting surface
brightness of 25 Bmag/arcsec2, in kpc (7)
75- 77 F3.1 kpc e_D25kpc rms uncertainty on D25kpc
78 A1 --- r_D25 [*] an asterisk (*) indicates that the galaxy
is larger than GHASP field of view
80- 83 I4 km/s Vmax ? Maximum velocity
85- 87 I3 km/s e_Vmax ? rms uncertainty on Vmax
88- 89 A2 --- n_Vmax [PV ] PV = Vmax from Position-Velocity diagram
(from fit of velocity field otherwise)
91 I1 --- f_Vmax [1/4]? Vmax reached (8)
93 A1 --- HI [VW] VLA or WHISP data
95- 97 A3 --- r_HI References for aperture synthesis HI data (9)
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Note (5): Distance, deduced from the systemic velocity taken in NED corrected
from Virgo infall, assuming H0=75km/s/Mpc, except for those marked
Note (6): References for systemic velocity as follows:
Ja = James et al., 2004, Cat. J/A+A/414/23
Ka = Karachentsev et al., 2004, Cat. J/AJ/127/2031
Ko = Koopmann, Haynes & Catinella, 2006, Cat. J/AJ/131/716
Mo = Moustakas & Kennicutt, 2006, Cat. J/ApJS/164/8
Oc = O'Connell, Gallagher & Hunter, 1994ApJ...433...65O 1994ApJ...433...65O
Sa = Saha et al., 2006ApJS..165..108S 2006ApJS..165..108S
Sh = Shapley, Fabbiano & Eskridge, 2001ApJS..137..139S 2001ApJS..137..139S
Tu = Tully et al., 1996, Cat. J/AJ/112/2471
Note (7): From HyperLeda (Paturel et al., 1991A&A...243..319P 1991A&A...243..319P, Cat. VII/237)
adopting the distance given in column Dist
Note (8): this indicates whether Vax is:
1 = reached
2 = probably reached
3 = probably not reached
4 = not reached
Note (9): References for aperture synthesis HI data as follows:
S02 = Swaters et al., 2002A&A...390..829S 2002A&A...390..829S
N05 = Noordermeer et al., 2005, Cat. J/A+A/442/137,
http://www.astro.rug.nl/whisp
I94 = Irwin, 1994ApJ...429..618I 1994ApJ...429..618I
R94 = Rownd, Dickey & Helou, 1994AJ....108.1638R 1994AJ....108.1638R
S96 = Schulman et al., 1996AJ....112..960S 1996AJ....112..960S
L98 = Laine & Gottesman, 1998MNRAS.297.1041L 1998MNRAS.297.1041L
K00 = Kornreich et al., 2000AJ....120..139K 2000AJ....120..139K
W01 = Wilcots, Turnbull & Brinks, 2001ApJ...560..110W 2001ApJ...560..110W
W02 = Williams, Yun & Verdes-Montenegro, 2002AJ....123.2417W 2002AJ....123.2417W
W04 = Wilcots & Prescott, 2004AJ....127.1900W 2004AJ....127.1900W
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Byte-by-byte Description of file: tablef.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Name Galaxy name
10- 14 F5.2 kpc r Galactic radius, in kpc
16- 19 F4.2 kpc e_r Dispersion around the galactic radius in kpc
21- 25 F5.1 arcsec r2 Galactic radius, in arcsec
27- 30 F4.1 arcsec e_r2 Dispersion around the galactic radius in arcsec
32- 34 I3 km/s Vrot Rotation velocity
36- 38 I3 km/s e_Vrot Dispersion on the rotation velocity
40- 41 I2 --- Nbins Number of velocity bins
43 A1 --- Side [ar] Receding - r - or approaching - a - side
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History:
From electronic version of the journal
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/388/50
(End) Patricia Vannier [CDS] 22-Mar-2010