J/AJ/107/135 Colors in bulges of galaxies (Balcells+ 1994)
Colors and color gradients in bulges of galaxies
BALCELLS M., PELETIER R.F.
<Astron. J. 107, 135 (1994)>
=1994AJ....107..135B 1994AJ....107..135B
Keywords: photometry: galaxies - galaxies: spiral - galaxies: early-type
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1 87 32 Photometric data
table2 123 18 Central colors and color gradients
table3 53 6 Comparison with aperture photometry
table4 23 4 Integrated colors of single burst models
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Byte-by-byte Description of file: table1
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Bytes Format Units Label Explanations
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2- 6 I5 --- UGC UGC denomination
9- 10 A2 --- IC When IC, the following number is the IC name
11- 14 I4 --- NGC NGC denomination
18- 19 I2 --- Type Numerical morphological type from the RC3
23- 26 F4.2 --- epsilon Disk ellipticity (1-b/a)
29- 34 F6.2 mag Mtot(R) R luminosity of the galaxy
38- 43 F6.2 mag Mbul(R) []? R luminosity of the bulge
47- 51 F5.2 --- D/B Bulge to disk ratio in R color
55- 59 F5.2 mag/arcsec2 mu0(R) Central surface brightness of the disk
in R color
62- 66 F5.2 --- h_UR []? Ratio of the scale lengths of the disk
in U and R minus 1 (hU/hR - 1)
70- 89 A20 --- RR Reason why a galaxy did not qualify for the
dustfree sample
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Byte-by-byte Description of file: table2
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Bytes Format Units Label Explanations
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3- 6 I4 --- NGC NGC name
10- 13 F4.2 mag (B-R)0 B-R central color
17- 20 F4.2 mag e_(B-R)0 rms uncertainty on (B-R)0
23- 27 F5.2 --- d(B-R)/dr B-R color gradient
31- 34 F4.2 --- e_d(B-R)/dr rms uncertainty on d(B-R)/dr
38- 41 F4.2 mag (U-R)0 U-R central color
45- 48 F4.2 mag e_(U-R)0 rms uncertainty on (U-R)0
52- 56 F5.2 --- d(U-R)/dr U-R color gradient
60- 63 F4.2 --- e_d(U-R)/dr rms uncertainty on d(U-R)/dr
67- 70 F4.2 mag (R-I)0 R-I central color
74- 77 F4.2 mag e_(R-I)0 rms uncertainty on (R-I)0
81- 85 F5.2 --- d(R-I)/dr R-I color gradient
89- 92 F4.2 --- e_d(R-I)/dr rms uncertainty on d(R-I)/dr
96- 99 F4.2 mag (U-B)0 U-B central color
103-106 F4.2 mag e_(U-B)0 rms uncertainty on (U-B)0
110-114 F5.2 --- d(U-B)/dr U-B color gradient
118-121 F4.2 --- e_d(U-B)/dr rms uncertainty on d(U-B)/dr
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Byte-by-byte Description of file: table3
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Bytes Format Units Label Explanations
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1- 8 A8 --- NGC Galaxy name
11- 15 F5.2 mag DeltaU []? Average difference between the artificial
aperture measurement and the literature
photometry, in U
19- 22 F4.2 mag e_DeltaU []? rms uncertainty on DeltaU
25- 29 F5.2 mag DeltaB Average difference between the artificial
aperture measurement and the literature
photometry, in B
33- 36 F4.2 mag e_DeltaB rms uncertainty on DeltaB
39- 43 F5.2 mag DeltaR Average difference between the artificial
aperture measurement and the literature
photometry, in R
47- 50 F4.2 mag e_DeltaR []? rms uncertainty on DeltaR
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Byte-by-byte Description of file: table4
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Bytes Format Units Label Explanations
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3- 7 F5.2 Sun [Fe/H] Metallicity
11- 15 F5.3 mag (B-R)20 Integrated B-R color for an age of 20 Gyr
19- 23 F5.3 mag (B-R)12 Integrated B-R color for an age of 12 Gyr
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(End) Patricia Bauer [CDS] 22-Feb-1993