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J/AZh/71/706 BV photometry of galactic nuclei (Silchenko, 1994)
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Photometrically Distinct Nuclei in Elliptical and Early-Type Disk Galaxies.
Silchenko O.K.
<Astron. Zh. 71, 706 (1994)>
=1994AZh....71..706S
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ADC_Keywords: Galaxies, photometry ; Morphology
Description:
Using all data in the literature on multiaperture photometry in B and
V bands for 237 galaxies, a list of candidates for galaxies with
chemically distinct nuclei is compiled. Twenty-five to 50 percent of
galaxies with morphological types from E to Sb are found to be such
candidates.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 77 92 Photometric characteristics of elliptical galaxies
table2.dat 86 84 Photometric characteristics of bulges
of lenticular galaxies
table3.dat 84 24 Photometric characteristics of disks of
lenticular galaxies
table4.dat 86 61 Photometric characteristics of bulges of
early-type spiral galaxies
table5.dat 86 29 Photometric characteristics of disks of
early-type spiral galaxies
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Name Name of the galaxy
9 A1 --- Note [*] Notes (1)
12- 15 F4.1 Mpc Dist ? Distance
16 A1 --- u_Dist Uncertainty flag on Distance
19- 24 F6.2 mag M(B) B absolute magnitude
25 A1 --- u_M(B) Uncertainty flag on B absolute magnitude
28- 31 F4.1 arcsec Riarc Inner boundary radius of a studied region
of a galaxy
34- 37 F4.2 kpc Rilin Inner boundary radius of a studied region
of a galaxy
40- 43 F4.2 mag (B-V)Ri B-V color of the central part of a galaxy
limited by inner radius
46- 48 I3 arcsec Roarc ? Outer boundary of a studied region of
a galaxy where there is no color gradient
51- 55 F5.2 kpc Rolin ? Outer boundary of a studied region of
a galaxy where there is no color gradient
58- 61 F4.2 mag (B-V)Ro ? B-V color of a studied region of a galaxy
64- 67 F4.2 mag e_(B-V)Ro ? Error on (B-V)Ro
70- 71 A2 --- Grad [- + -?+?] Indicator of the presence of
significant (B-V) color gradient
74- 77 A4 --- Nucleus ? Degree of nucleus distinction (2)
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Note (1): Strong extinction in the galactic plane:
NGC 2663 has A(B) = 1.33,
NGC 3136 has A(B) = 1.94 (De Vaucouleurs et al. Second Reference
Catalogue of Bright Galaxies, 1976, Cat. <VII/112>)
Note (2): 1 - distinction on level 1 sigma,
2 - distinction on level 2 sigma,
and so on.
+ indicate red nuclei,
- indicate blue nuclei
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Byte-by-byte Description of file: table2.dat table3.dat table4.dat table5.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Name Name of the galaxy
11- 14 F4.1 Mpc Dist ? Distance
15 A1 --- u_Dist Uncertainty flag on Distance
18- 23 F6.2 mag M(B) B absolute magnitude
24 A1 --- u_M(B) Uncertainty flag on B absolute magnitude
27- 30 F4.1 arcsec Riarc Inner boundary radius of a studied region
of a galaxy
33- 37 F5.3 kpc Rilin Inner boundary radius of a studied region
of a galaxy
39- 42 F4.2 mag (B-V)Ri B-V color of the central part of a galaxy
limited by inner radius
45- 47 I3 arcsec Roarc Outer boundary of a studied region of
a galaxy where there is no color gradient
50- 54 F5.2 kpc Rolin Outer boundary of a studied region of
a galaxy where there is no color gradient
57- 60 F4.2 mag (B-V)bul ? B-V color of a studied region of a galaxy (1)
63- 66 F4.2 mag e_(B-V)bul ? Error on (B-V)Ro (2)
69- 76 A8 --- Refs ? References (3)
79- 80 A2 --- Grad [- + -?] Indicator of the presence of
significant (B-V) color gradient
82- 86 A5 --- Nucleus ? Degree of nucleus distinction (4)
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Note (1): Labels for table3.dat and table5.dat change to (B-V)disk
Note (2): Labels for table3.dat and table5.dat change to e_(B-V)disk
Note (3): References:
B81 = Boroson, 1981ApJS...46..177B
M92 = Magrelli Et al., 1992MNRAS.256..500M
SV8 = Simien & de Vaucouleurs, 1986ApJ...302..564S
K84 = Kent, 1984ApJS...56..105K
K86 = Kent, 1986AJ.....91.1301K
K88 = Kent, 1988AJ.....96..514K
Gr = Grosbol, 1985A&AS...60..261G
Note (4): 1 = distinction on level 1 sigma,
2 = distinction on level 2 sigma,
and so on.
+ indicate red nuclei,
- indicate blue nuclei
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(End) Veta Avedisova [INASAN] 20-Jan-1997