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Title:
An H_alpha catalogue of galaxies in Hickson compact groups. I. The sample
Authors:
Severgnini, P.; Garilli, B.; Saracco, P.; Chincarini, G.
Affiliation:
AA(Univ. degli Studi di Firenze, Dip. Astronomia e Scienza dello Spazio, Via Fermi 5, 50125 Firenze (Arcetri), Italy ), AB( IFCTR/CNR, Via Bassini, 15, 20133 Milano, Italy ), AC(Osservatorio Astronomico di Brera-Merate, Milano, Italy ), AD(Dip. di Fisica, Univ. Milano, Via Celoria, 16, 20133 Milano, Italy )
Publication:
Astronomy and Astrophysics Supplement, v.137, p.495-504 (A&AS Homepage)
Publication Date:
06/1999
Origin:
A&AS
A&A Keywords:
GALAXIES: CLUSTERS: GENERAL, GALAXIES: EVOLUTION, GALAXIES: INTERACTION
DOI:
10.1051/aas:1999492
Bibliographic Code:
1999A&AS..137..495S

Abstract

We present H_alpha photometry for a sample of 95 galaxies in Hickson Compact Groups obtained from observations of 31 groups. The Catalogue lists isophotal and adaptive aperture (Kron aperture) flux measurements for about 75% of the accordant galaxies inside the observed HCGs, 22 out of which are upper limits. Non standard data reduction procedures have been used to obtain the continuum subtracted H_alpha images for each HCG of the target sample. Flux calibration has also been performed in order to obtain H_alpha luminosities for the whole sample. Both the data reduction and calibration procedures are carefully described in this paper. The new data listed in this Catalogue are of great importance in understanding the star formation rate inside HCG galaxies and in giving new insights on its dependence on galaxy interactions. Tables 3 to 10 and Figs. 6 to 11 are only available in electronic version at http://www.edpsciences.com Tables 7, 8, 9 are also available in electronic version form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/Abstract.html

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