J/MNRAS/276/1341 Spectroscopy of E and S0 galaxies (Jorgensen+, 1995)
Spectroscopy for E and S0 galaxies in nine clusters.
Jorgensen I., Franx M., Kjaergaard P.
<Mon. Not. R. Astron. Soc., 276, 1341-1364 (1995)>
=1995MNRAS.276.1341J 1995MNRAS.276.1341J
ADC_Keywords: Galaxies, spectra; Clusters, galaxy
Abstract:
Central velocity dispersions, Mg2 line indices, and radial
velocities for 220 E and S0 galaxies are derived on basis of
intermediate resolution spectroscopy. Galaxies in the following
clusters have been observed: Abell 194, Abell 539, Abell 3381, Abell
3574, S639, S753, Doradus, HydraI (Abell 1060), and Grm15. The spectra
cover 50 or 100nm centered on the magnesium triplet at 517.7nm.
In this catalog we give the mean values of the parameters. The central
velocity dispersion and the Mg2 line indices have been aperture
corrected to a circular aperture with a diameter of 1.19h-1kpc,
equivalent to 3.4arcsec at the distance of the Coma cluster. Values
are also given for a circular aperture with radius equal to the
effective radius of the galaxy (cf. Jorgensen et al. 1995, Cat.
J/MNRAS/273/1097). The Mg2 indices are consistent with the Lick
system. The typical uncertainty of the central velocity dispersion is
0.036 in log(σ), the typical uncertainty of Mg2 is 0.013.
Further, literature data (velocity dispersions and Mg2 indices) for
the clusters A194, DC2345-28 and Coma (A1656) have been brought on a
homogeneous system and aperture corrected to the aperture sizes given
above. The literature data are from Davies et al. (1987ApJS...64..581D 1987ApJS...64..581D),
Dressler (1987ApJ...317....1D 1987ApJ...317....1D), Dressler & Shectman 1988 (J/AJ/95/284),
Lucey & Carter (1988MNRAS.235.1177L 1988MNRAS.235.1177L), Lucey et al. (1991MNRAS.253..584L 1991MNRAS.253..584L),
and Guzman et al. (1992MNRAS.257..187G 1992MNRAS.257..187G).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table4.dat 85 220 Spectroscopic parameters: new observations
table5.dat 69 114 *Spectroscopic parameters: literature data
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Note on table5.dat: literature data (velocity dispersions and Mg2 indices)
for the clusters A194, DC2345-28 and Coma (A1656) have been brought on
a homogeneous system and aperture corrected; the literature data are from
Davies et al. (1987ApJS...64..581D 1987ApJS...64..581D),
Dressler (1987ApJ...317....1D 1987ApJ...317....1D),
Dressler & Shectman 1988 (J/AJ/95/284),
Lucey & Carter (1988MNRAS.235.1177L 1988MNRAS.235.1177L),
Lucey et al. (1991MNRAS.253..584L 1991MNRAS.253..584L), and
Guzman et al. (1992MNRAS.257..187G 1992MNRAS.257..187G).
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- Cluster Cluster name
11- 18 A8 --- Galaxy Galaxy name
20- 21 I2 h RAh Right ascension B1950 (hours)
23- 24 I2 min RAm Right ascension B1950 (minutes)
26- 29 F4.1 s RAs [0/60] Right ascension B1950 (seconds)
31 A1 --- DE- Declination B1950 (sign)
32- 33 I2 deg DEd Declination B1950 (degrees)
35- 36 I2 arcmin DEm Declination B1950 (arcminutes)
38- 39 I2 arcsec DEs Declination B1950 (arcseconds)
41- 45 I5 km/s cz [716/15106] Heliocentric radial velocity
47- 51 F5.3 [km/s] log.s log(σ) in 1.19h-1kpc aperture (G1)
53- 57 F5.3 [km/s] log.s2 ?=- log(σ) in re/4 aperture diameter
(re is the effective radius in Gunn r) (G1)
59- 63 F5.3 [km/s] e_log.s Uncertainty on log.s1 and log.s2
65- 69 F5.3 mag Mg2 ?=- Mg2 index in 1.19h-1kpc aperture (G2)
71- 75 F5.3 mag Mg2.2 ?=- Mg2 index in re/4 aperture diameter
(re is the effective radius in Gunn r) (G2)
77- 81 F5.3 mag e_Mg2 ?=- Uncertainty on Mg2 and Mg2.2
83 I1 --- u_log.s [0/1] Low signal-to-noise flag (3)
85 I1 --- N [1/3] Number of observations
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Note (3): value of flag is:
0 = Signal-to-noise of observation above 20 per Angstrom.
1 = Signal-to-noise of observation below 20 per Angstrom.
The velocity dispersion may be affected by systematic errors.
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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- 9 A9 --- Cluster Cluster name
11- 18 A8 --- Galaxy Galaxy name
20- 21 I2 h RAh Right ascension B1950 (hours)
23- 24 I2 min RAm Right ascension B1950 (minutes)
26- 29 F4.1 s RAs [0/60] Right ascension B1950 (seconds)
31 A1 --- DE- Declination B1950 (sign)
32- 33 I2 deg DEd Declination B1950 (degrees)
35- 36 I2 arcmin DEm Declination B1950 (arcminutes)
38- 39 I2 arcsec DEs Declination B1950 (arcseconds)
41- 45 I5 km/s cz [4589/10554] Heliocentric radial velocity
47- 51 F5.3 [km/s] log.s log(σ) in 1.19h-1kpc aperture (G1)
53- 57 F5.3 [km/s] log.s2 ?=- log(σ) in re/4 aperture diameter
(re is the effective radius in Gunn r) (G1)
59- 63 F5.3 mag Mg2 ?=- Mg2 index 1.19h-1kpc aperture (G2)
65- 69 F5.3 mag Mg2.2 ?=- Mg2 index in re/4 aperture diameter
(re is the effective radius in Gunn r) (G2)
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Global Notes:
Note (G1): σ is the velocity dispersion of the galaxy in km/s.
σ is aperture corrected to the size aperture given in the explanations.
Note (G2): Mg2 is the line index of the Mg lines at 5177Å as defined by
Worthey et al. (1994ApJS...94..687W 1994ApJS...94..687W). Mg2 is aperture corrected to the
size aperture given in the explanations.
Acknowledgements:
The data are also part of Heinz Andernach's collection of astronomical
catalogs (numbered A274)
History:
* 30-Nov-1995: the files were supplied by Inger Jorgensen (McDonald Obs.)
to Heinz Andernach (ESA-Vilspa, Spain)
* 20-May-2015: the files were supplied to CDS by Heinz Andernach
(Guanajuato Univ., Mexico)
(End) Inger Jorgensen [McDonald Obs.], Francois Ochsenbein [CDS] 20-May-2015