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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
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:
FileName Lrecl Records Explanations
ReadMe 80 . This file table4.dat 31 4879 The catalogue of galaxy types
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
Bytes Format Units Label Explanations
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
Note (1): Galaxies identified as ENACS ACO NNNN NNN in Simbad
Acknowledgements: Peter Katgert, katgert(at)strw.leidenuniv.nl References: Katgert et al., Paper I 1996A&A...310....8K, Cat. J/A+A/310/8 Mazure et al., Paper II 1996A&A...310...31M, Cat. J/A+A/310/31 BIVIANO et al., Paper III 1997A&A...321...84B ADAMI et al., Paper IV 1998A&A...331..493A Katgert et al., Paper V 1998A&AS..129..399K, Cat. J/A+AS/129/399 de Theije et al., Paper VI 1999A&A...341..371D Adami et al., Paper VII 1998A&A...336...63A Biviano et al., Paper XI 2002A&A...387....8B Katgert et al., Paper XII 2004ApJ...600..657K Biviano et al., Paper XIII 2004A&A...424..779B
(End) Patricia Vannier [CDS] 07-Nov-2005
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