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Date and Time of the Query: 2019-03-26 T07:02:03 PDT
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For refcode 2000A&A...361..863G:
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Copyright by European Southern Observatory (ESO). Reproduced by permission
2000A&A...361..863G 1.65 micron (H-band) surface photometry of galaxies. V. Profile decomposition of 1157 galaxies. GAVAZZI G., FRANZETTI P., SCODEGGIO M., BOSELLI A., PIERINI D. Received 10 April 2000/Accepted 20 July 2000 Abstract: We present near-infrared H-band (1.65 micron) surface brightness profile decomposition for 1157 galaxies in five nearby clusters of galaxies: Coma, A1367, Virgo, A262 and Cancer, and in the bridge between Coma and A1367 in the "Great Wall". The optically selected (m_pg_ <= 16.0) sample is representative of all Hubble types, from E to Irr+BCD, except dE and of significantly different environments, spanning from isolated regions to rich clusters of galaxies. We model the surface brightness profiles with a de Vaucouleurs r^1/4^ law (dV), with an exponential disk law (E), or with a combination of the two (B+D). From the fitted quantities we derive the H band effective surface brightness ({mu}_e_) and radius (r_e_) of each component, the asymptotic magnitude H_T_ and the light concentration index C_31_. We find that: i) Less than 50% of the Elliptical galaxies have pure dV profiles. The majority of E to Sb galaxies is best represented by a B+D profile. All Scd to BCD galaxies have pure exponential profiles. ii) The type of decomposition is a strong function of the total H band luminosity (mass), independent of the Hubble classification: the fraction of pure exponential decompositions decreases with increasing luminosity, that of B+D increases with luminosity. Pure dV profiles are absent in the low luminosity range L_H_ < 10^10^L_sun_ and become dominant above 10^11^L_sun_ Key words: galaxies: fundamental parameters - galaxies: photometry - infrared: galaxies
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