J/ApJS/107/97 Parameters of 2447 southern spirals (Mathewson+ 1996)
Parameters of 2447 southern spiral galaxies for use in the Tully-Fisher relation
Mathewson D.S., Ford V.L.
<Astrophys. J. Suppl. Ser. 107, 97 (1996)>
=1996ApJS..107...97M 1996ApJS..107...97M
ADC_Keywords: Galaxies, photometry ; Rotational velocities ; Redshifts ;
Morphology
Keywords: galaxies: distances and redshifts -
galaxies: kinematics and dynamics - galaxies: photometry - surveys
Abstract:
I-band luminosities, rotational velocities, and redshifts of 1092
spiral galaxies have been measured by CCD photometry and Halpha
spectroscopy using the 1m and 2.3m telescopes at Siding Spring
Observatory, respectively. The results are tabulated. Luminosity
profiles and Halpha rotation curves are given for the galaxies. When
these results are combined with similar data for 1355 spiral galaxies
published previously (Mathewson, Ford, & Buchhorn, hereafter Paper I,
1992ApJS...81..413M 1992ApJS...81..413M), it provides a large, uniform, and unique data
set with which to measure, via the Tully-Fisher relation, the peculiar
velocities of galaxies in the local universe to a distance of
11,000km/s (Mathewson & Ford, in Proc. Heron Island Workshop on Peculiar
Velocities in the Universe). Taking advantage of the opportunity for
publishing this data in machine-readable form, in the CD-ROM, we have
also published similar data for the 1355 galaxies in Paper I.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 219 2447 Physical parameters, photometric and velocity
data for survey galaxies
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Byte-per-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Name *Galaxy identification number
12- 13 I2 h RAh Right ascension, 1950
15- 16 I2 min RAm Right ascension, 1950
18- 19 I2 s RAs Right ascension, 1950
21 A1 --- DE- Declination sign
22- 23 I2 deg DEd Declination, 1950
25- 26 I2 arcmin DEm Declination, 1950
28- 29 I2 arcsec DEs Declination, 1950
31- 37 F7.2 deg GLon Galactic longitude
39- 44 F6.2 deg GLat Galactic latitude
46- 52 F7.2 deg SGL Supergalactic longitude
54- 59 F6.2 deg SGB Supergalactic latitude
62- 67 A6 --- Class Classification in the Hubble system
69- 70 A2 --- Type Morphological type, +3 for Sb to +8 for Sd
72- 75 F4.1 arcmin aESO ? Major axis diameter from various catalogs
77- 81 F5.2 arcmin a *Major axis diameter
83- 86 F4.2 arcmin b *Minor axis diameter
88- 90 I3 deg i *Inclination of optical disk
92- 95 I4 deg PA *[-90/179] Position angle of the major axis
97-101 F5.2 arcmin D0 *Face-on diameter
103-107 F5.2 mag Aext *Extinction in our Galaxy in I magnitudes
109-113 F5.2 mag Aint *Internal extinction in I magnitudes
115-119 F5.2 mag Kz *K correction in I magnitudes
121-126 F6.2 mag It Total I magnitudes
128-133 F6.2 mag Itc *Total I magnitudes corrected for extinction
135-140 F6.2 mag/arcsec2 ISB *Integrated surface brightness
142-147 I6 km/s Vopt *? Heliocentric systemic velocity, optical
149-153 I5 km/s Vradio *? Heliocentric systemic velocity, radio
155-158 I4 km/s DVopt *? Diff. of max and min optical rotation
160-163 I4 km/s DV50 *? Diff. of H I profile at 50% intensity
165-167 I3 km/s e_DV50a *? First uncertainty in DV50 measurement
169-170 I2 km/s e_DV50b *? Second uncertainty in DV50 measurement
172-175 I4 km/s DV20 *? Diff of H I profile at 20% intensity
177-179 I3 km/s e_DV20a *? First uncertainty in DV20 measurement
181-182 I2 km/s e_DV20b *? Second uncertainty in DV20 measurement
184-187 I4 km/s Vrot *Maximum rotation velocity of spiral galaxy
188 A1 --- u_Vrot *[:] Vrot calculated by alternate method
189-194 F6.2 Jy.km/s FHI *? H I flux density integral
196-200 F5.1 mJy rms ? rms noise
202-206 F5.1 --- S/N ? Peak signal divided by rms noise
208-213 I6 km/s Vcmb *Heliocentric systemic velocity in CMB frame
215-219 I5 km/s Vlg *Heliocentric velocity in Local Group frame
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Note on Name:
Galaxy identification number; for galaxies south of -17.5 deg; it
is the ESO-Uppsala Catalog (Cat. VII/34) number, and for galaxies
north of -17.5 deg, it is either the UGC number (Cat. VII/26, the
NGC (Cat. VII/1) or IC designation, or the MCG (Cat. VII/62) number.
Note on a, b:
Major and minor axes diameters of the I = 23.5 mag/arcsec2 isophote.
Note on i:
Inclination of the optical disk computed from the average of axial
ratios of the ellipses of surface brightness I = 22.5, 23.0, and
23.5 mag/arcsec2, following Bothun et al. (1985ApJS...57..423B 1985ApJS...57..423B).
Note on PA:
Position angle of the major axis, which is an average of the
position angles of the major axes of the ellipses of surface
brightness I = 22.5, 23.0, and 23.5 mag/arcsec2 or the P.A. given
in the ESO-Uppsala Catalog.
Note on D0:
Face-on diameter D(0) computed using the relation
log D(0) = log(a) - 0.235 log(a/b) + 0.09 Aext
where Aext = the absorption in our Galaxy, and the maximum value of a/b is 5
(cf. de Vaucouleurs, de Vaucouleurs, & Corwin 1976, Cat. VII/112).
Note on Aext:
The extinction in our Galaxy in I magnitudes. This has been
calculated following Burstein & Heiles (1978ApJ...225...40B 1978ApJ...225...40B).
The relation used is Aext=4.05x10^-4F(HI)-0.06. F(HI) is the integrated
"zero-velocity" H I flux density in Jy km/s, measured with the
64 m Parkes radio telescope in the direction of each galaxy.
The extinction in I is taken to be 42% of that in B.
Note on Aint:
Internal extinction in a galaxy in I magnitudes. The corrections
prescribed by Tully & Fouque, (1985ApJS...58...67T 1985ApJS...58...67T), were used to
yield "face-on" magnitudes. The extinction in I is taken to be
42% of that in B.
Note on Kz:
K-correction in I magnitudes. The values were taken from Schneider
et al. 1983ApJ...264..337S 1983ApJ...264..337S.
Note on Itc:
Total I magnitudes corrected for internal and external extinction
and K dimming: Itc=It-Aext-Aint-Kz.
Note on ISB:
Integrated surface brightness in I magnitudes/arcsec2:
ISB=c_D(0)+5logD(0)+2.5log(pi)
where IcD(0)=ID(0)-Aext-Aint-Kz and I_D(0) are measured
from the GASP output files.
Note on Vopt:
Heliocentric systemic velocity taken as the arithmetic mean of the
maximum and minimum velocities of the optical rotation curve.
Note on Vradio:
Heliocentric systemic velocity taken as the arithmetic mean of the
velocities where the H I profile falls to 50% of the mean of the
highest channels in each half of the profile.
Note on DVopt:
Half the difference between the maximum and minimum values of the
optical rotation curve, corrected for relativistic effects, i.e.,
divided by 1+z.
Note on DV50:
Half the widths of the H I profile between points where the
intensity falls to 50% of the highest channels in each half of the
profile and points corrected for relativistic effects.
Note on e_DV50a, e_DV50b:
Uncertainties in the measurement of DV50. These errors were
calculated by perturbing the 50% level by the rms noise in the
spectrum and measuring the amount by which the width changed.
Note on DV20:
Same as DV50, but for the 20% level.
Note on e_DV20a, e_DV20b:
Same as e_DV20, but for the 20% level. Sometimes due to noise
spikes, unrealistic error values were recorded. In this case, the
the error fields may be blank.
Note on Vrot:
Maximum velocity of rotation of the spiral galaxy, obtained by
dividing DVopt by sin i. When there was only a radio measurement,
DV50 was converted to DVopt using the algorithm
DVopt = 1.03 DV50 - 11.
Note on u_Vrot:
The colons after 20 of the Vrot entries indicate that the
rotational velocities were derived from radio measurements by
M. Haynes and R. Giovanelli, and converted to DVopt using the
algorithm DVopt = 1.10 DV50 - 27.
Note on FHI:
H I flux density integral corrected for beam effects.
Note on Vcmb:
Heliocentric systemic velocity converted to the cosmic microwave
background (CMB) frame of reference. If both Vopt and Vradio are
given, Vopt is used, otherwise Vradio. There is no significant
difference between the two values.
Note on Vlg:
The same as Vcmb, except heliocentric velocities are converted to
the frame of the Local Group.
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Note: The spectra are available in the CD-ROM
Origin: AAS CD-ROM series, Volume 7, 1996 Lee Brotzman [ADS] 04-Nov-96
(End) [CDS] 03-Feb-1997