J/A+A/361/863 Galaxies morphology and IR photometry. V. (Gavazzi+, 2000)
1.65 micrometer (H-band) surface photometry of galaxies.
V. Profile decomposition of 1157 galaxies.
Gavazzi G., Franzetti P., Boselli A., Pierini D., Scodeggio M.
<Astron. Astrophys. 361, 863 (2000)>
=2000A&A...361..863G 2000A&A...361..863G
ADC_Keywords: Galaxies, photometry ; Photometry, surface ; Morphology ;
Photometry, infrared
Keywords: galaxies: fundamental parameters - galaxies: photometry -
infrared: galaxies
Abstract:
We present near-infrared H-band (1.65µm) 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 (mpg≤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 r1/4 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 (µe) and radius (re) of each component, the
asymptotic magnitude HT and the light concentration index C31. 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 LH<1010L☉ and become
dominant above 1011L☉.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 123 1157 Photometric parameters of the target galaxies
fig/* . 17 Figures 2, 3 & 4 (postscript)
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See also:
J/A+AS/120/489 : Galaxies morphology and IR photometry I. (Gavazzi+ 1996)
J/A+AS/120/521 : Galaxies morphology and IR photometry II. (Gavazzi+ 1996)
J/A+AS/142/65 : Galaxies morphology and IR photometry III. (Gavazzi+ 2000)
J/A+AS/142/73 : Galaxies morphology and IR photometry IV. (Boselli+ 2000)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- Name CGCG (Zwicky et al., 1961-68, VII/190) or
VCC (Binggeli et al., 1985AJ.....90.1681B 1985AJ.....90.1681B)
7 A1 --- m_Name [NSWEC] Multiplicity index on Name
10- 15 A6 --- MType Morphological type (Binggeli et al.,
1985AJ.....90.1681B 1985AJ.....90.1681B)
18- 23 A6 --- Agg Aggregation parameter - cluster membership
25- 29 F5.1 Mpc Dist Distance
32 A1 --- Filter [HK] Infrared filter
35- 37 A3 --- DType Decomposition type (1)
40- 41 A2 --- DTypeB Decomposition type of bulge (1)
44- 48 F5.2 arcsec rebf ? Effective radius of the bulge
51- 55 F5.2 mag/arcsec+2 muebf ? Effective surface brightness of bulge
58- 63 F6.2 arcsec redf ? Effective radius of the disk
66- 70 F5.2 mag/arcsec+2 muedf ? Effective surface brightness of disk
73- 78 F6.2 arcsec re Empirical effective radius
81- 85 F5.2 mag/arcsec+2 mue Empirical effective surface brightness
88- 92 F5.2 mag HT Total magnitude integrated to infinity
95- 99 F5.2 --- C31 ? Concentration index
102-105 F4.2 --- B/T ? Bulge to total flux ratio
110-114 F5.2 arcmin rB(25) Optical isophotal diameter
(at 25mag/arcsec+2)
118-123 F6.2 arcsec rH(20.5) NIR isophotal radius (at 20.5mag/arcsec+2)
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Note (1): E = exponential, dV = de Vaucouleurs, B+D = bulge+disk, T = truncated
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Acknowledgements: Giuseppe Gavazzi
(End) Patricia Bauer [CDS] 05-Sep-2000