J/A+AS/140/327 Fundamental plane galaxies redshifts (Mueller+, 1999)
Fundamental plane distances to early-type field galaxies in the South
Equatorial Strip. I. The spectroscopic data.
Mueller K.R., Wegner G., Raychaudhury S., Freudling W.
<Astron. Astrophys. Suppl. Ser. 140, 327 (1999)>
=1999A&AS..140..327M 1999A&AS..140..327M (SIMBAD/NED BibCode)
ADC_Keywords: Galaxy catalogs ; Redshifts ; Velocity dispersion
Keywords: techniques: spectroscopic - galaxies: distances and redshifts -
galaxies: elliptical and lenticular, cD - galaxies: fundamental parameters
Abstract:
Radial velocities and central velocity dispersions are derived for
238 E/S0 galaxies from medium-resolution spectroscopy. New
spectroscopic data have been obtained as part of a study of the
Fundamental Plane distances and peculiar motions of early-type
galaxies in three selected directions of the South Equatorial Strip,
undertaken in order to investigate the reality of large-scale
streaming motion; results of this study have been reported in Mueller
et al. (1998ApJ...507L.105M 1998ApJ...507L.105M). The new APM South Equatorial Strip
Catalog (-17.5deg<δ<+2.5deg) (Raychaudhury & Lynden-Bell, 2000)
was used to select the sample of field galaxies in three directions:
(1) 15h10-16h10; (2) 20h30-21h50; (3) 00h10-01h30. The spectra
obtained have a median S/N per Å of 23, an instrumental resolution
(FWHM) of ∼4Å, and the spectrograph resolution (dispersion) is
∼100km/s. The Fourier cross-correlation method was used to derive the
radial velocities and velocity dispersions. The velocity dispersions
have been corrected for the size of the aperture and for the galaxy
effective radius. Comparisons of the derived radial velocities with
data from the literature show that our values are accurate to 40km/s.
A comparison with results from Jorgensen et al. (1995MNRAS.276.1341J 1995MNRAS.276.1341J)
shows that the derived central velocity dispersion have an rms scatter
of 0.036 in logσ. There is no offset relative to the velocity
dispersions of Davies et al. (1987ApJS...64..581D 1987ApJS...64..581D).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table5.dat 66 181 Spectroscopic parameters for the sample galaxies
table6.dat 50 18 Spectroscopic parameters for the standard galaxies
tables.tex 75 305 LaTeX version of the tables
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1 I1 --- Region [1-3] Region number
3- 11 A9 --- Gal Galaxy designation (1)
13- 14 I2 h RAh Right ascension (B1950.0)
16- 17 I2 min RAm Right ascension (B1950.0)
19- 23 F5.2 s RAs Right ascension (B1950.0)
25 A1 --- DE- Declination sign (B1950.0)
26- 27 I2 deg DEd Declination (B1950.0)
29- 30 I2 arcmin DEm Declination (B1950.0)
32- 35 F4.1 arcsec DEs Declination (B1950.0)
37- 40 F4.1 mag bmag ? bJ magnitude (2)
42- 44 F3.1 arcmin Diam ? Major-axis diameter (2)
47- 51 I5 km/s HRV Heliocentric redshift
53- 55 I3 km/s e_HRV rms uncertainty on HRV
58- 60 I3 km/s sigma ? Central velocity dispersion
62- 64 I3 km/s e_sigma ? rms uncertainty on sigma
66 I1 --- Qspec [1-4] Quality rating for the spectrum
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Note (1): Galaxy number in the APM catalog (Raychaudhury & Lynden-Bell, 2000,
A Catalogue of Galaxies in the Southern Equatorial Strip. Cambridge
University Press, Cambridge UK) or the galaxy name from the NGC
(Cat. VII/118) or CGCG (Cat. VII/49) catalog in a few cases;
the first three digits of the APM galaxy number are the UK Schmidt
plate number
Note (2): Values the APM catalog, corrected for Galactic extinction. Preliminary
values prior to final calibrations
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Byte-by-byte Description of file: table6.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- NGC/IC NGC/IC (Cat. VII/118) galaxy name
12- 13 I2 h RAh Right ascension (B1950.0)
15- 16 I2 min RAm Right ascension (B1950.0)
18- 19 I2 s RAs Right ascension (B1950.0)
21 A1 --- DE- Declination sign (B1950.0)
22- 23 I2 deg DEd Declination (B1950.0)
25- 26 I2 arcmin DEm Declination (B1950.0)
28- 29 I2 arcsec DEs Declination (B1950.0)
32- 35 I4 km/s HRV Heliocentric redshift
38- 39 I2 km/s e_HRV rms uncertainty on HRV
42- 44 I3 km/s sigma ? Central velocity dispersion
47- 48 I2 km/s e_sigma ? rms uncertainty on sigma
50 I1 --- Qspec [1-4] Quality rating for the spectrum
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Acknowledgements:
Somak Raychaudhury
Wolfram Freudling
References:
Raychaudhury & Lynden-Bell, 2000, A Catalogue of Galaxies in the Southern
Equatorial Strip. Cambridge University Press, Cambridge UK
(End) Patricia Bauer [CDS] 11-Feb-2000