J/A+A/446/19 ENACS. VIII. Galaxies classification (Thomas+, 2006)
The ESO Nearby Abell Cluster Survey.
VIII. Morphological and spectral classification of galaxies.
Thomas T., Katgert P.
<Astron. Astrophys. 446, 19 (2006)>
=2006A&A...446...19T 2006A&A...446...19T
ADC_Keywords: Clusters, galaxy ; Morphology ; Spectral types
Keywords: galaxies: clusters: general - galaxies: fundamental parameters -
galaxies: statistics
Abstract:
We determine the morphological types of 2295 galaxies from the ESO
Nearby Abell Cluster Survey (ENACS) from CCD images obtained with the
Dutch telescope on La Silla. A comparison with morphological types
from the literature for 450 of our galaxies shows that the reliability
of our classification is quite comparable to that of other
classifiers. We recalibrate the ENACS spectral classification with the
new morphological types, and find that early- and late-type galaxies
can be distinguished from their spectra with 83% reliability.
Ellipticals and S0 galaxies can hardly be distinguished on the basis
of their spectra, but late spirals can be classified from the spectrum
alone with more than 70% reliability.
Description:
This table gives the morphological, spectral and adopted
classifications of 4879 galaxies in the ESO Nearby Cluster Survey (or
ENACS); see 1996, Cat. J/A+A/310/8 and 1998, Cat. J/A+AS/129/399
(with link to the original ENACS catalogue). All galaxies have at
least a morphological or a spectral type; of the adopted types 2102
are based on morphological types, 2446 on spectral types and 331 on a
combination of the two.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table4.dat 31 4879 The catalogue of galaxy types
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See also:
J/A+A/310/8 : The ESO Nearby Abell Cluster Survey I. (Katgert+, 1996)
J/A+A/310/31 : The ESO Nearby Abell Cluster Survey. II. (Mazure+ 1996)
J/A+AS/129/399 : The ENACS Catalogue. V. (Katgert+ 1998)
Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1 A1 --- --- [A]
2- 5 I4 --- Abell Abell number of cluster (1)
8- 10 I3 --- Gal Sequence number of galaxy in ENACS catalogue (1)
13- 17 A5 --- MType Morphological type of the galaxy
19- 23 A5 --- SType Spectral type of the galaxy
25- 29 A5 --- Type Adopted galaxy type
31 A1 --- n_Gal [*] * indicates emission-line galaxy
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Note (1): Galaxies identified as ENACS ACO NNNN NNN in Simbad
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Acknowledgements: Peter Katgert, katgert(at)strw.leidenuniv.nl
References:
Katgert et al., Paper I 1996A&A...310....8K 1996A&A...310....8K, Cat. J/A+A/310/8
Mazure et al., Paper II 1996A&A...310...31M 1996A&A...310...31M, Cat. J/A+A/310/31
BIVIANO et al., Paper III 1997A&A...321...84B 1997A&A...321...84B
ADAMI et al., Paper IV 1998A&A...331..493A 1998A&A...331..493A
Katgert et al., Paper V 1998A&AS..129..399K 1998A&AS..129..399K, Cat. J/A+AS/129/399
de Theije et al., Paper VI 1999A&A...341..371D 1999A&A...341..371D
Adami et al., Paper VII 1998A&A...336...63A 1998A&A...336...63A
Biviano et al., Paper XI 2002A&A...387....8B 2002A&A...387....8B
Katgert et al., Paper XII 2004ApJ...600..657K 2004ApJ...600..657K
Biviano et al., Paper XIII 2004A&A...424..779B 2004A&A...424..779B
(End) Patricia Vannier [CDS] 07-Nov-2005