Photometrical Properties of Bars of Galaxies. I. Mean Surface Brightnesses and Integral Color Indices for Bars Gusev A.S. ================================================================================ Abstract: UBVRIJHK surface brightnesses and color indices of bars of galaxies are determined using surface photometry data for 100 barred galaxies (table1.dat). The mean brightness distribution of bars in B-passband shows two maxima, 21.0m/sq.arcsec. and 22.2m/sq.arcsec. for the late- and early-type galaxies, respectively. A difference between mean surface brightnesses of the bar and the galaxy as a whole (within 25.0m/sq.arcsec. isophote) increases from 1.1m/sq.arcsec. for SB0 galaxies to 2.3m/sq.arcsec. for SBc-IBm galaxies. The mean color indices of the bars do not depend on a maternal galaxies type. Exception is the (B-V)0 and (R-I)0 color indices. File Summary: -------------------------------------------------------------------------------- Filename Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file table1.dat 89 100 Photometrical characteristics of bars notes1.dat 215 46 Individual notes to table1.dat -------------------------------------------------------------------------------- Byte-by-byte Description of file: table1.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1 - 5 A5 --- NGC Right Ascention, hours (2000) 7 -13 A7 --- Type Right Ascention, minutes (2000) 15 -18 F2.1 magn/sq.arcsec. U0 Mean surface U0 brightness 20 -24 F2.2 magn/sq.arcsec. B0 Mean surface B0 brightness 26 -29 F2.1 magn/sq.arcsec. V0 Mean surface V0 brightness 31 -34 F2.1 magn/sq.arcsec. R0 Mean surface R0 brightness 36 -39 F2.1 magn/sq.arcsec. I0 Mean surface I0 brightness 41 -44 F2.1 magn/sq.arcsec. J0 Mean surface J0 brightness 46 A1 --- CI- CI sign 47 -50 F1.2 magn/sq.arcsec. (U-B)0 (U-B)0 color index 52 -55 F1.2 magn/sq.arcsec. (B-V)0 (B-V)0 color index 57 -60 F1.2 magn/sq.arcsec. (V-R)0 (V-R)0 color index 62 -65 F1.2 magn/sq.arcsec. (R-I)0 (R-I)0 color index 67 -70 F1.2 magn/sq.arcsec. (I-J)0 (I-J)0 color index 72 -75 F1.2 magn/sq.arcsec. (J-H)0 (J-H)0 color index 77 A1 --- CI- CI sign 78 -81 F1.2 magn/sq.arcsec. (H-K)0 (H-K)0 color index 83 -86 F1.2 magn/sq.arcsec. CIe CI errors 88 -89 I2 --- Not Notes -------------------------------------------------------------------------------- Byte-by-byte Description of file: notes1.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 2 I2 --- Not Notes 4-215 A212 --- Ref References --------------------------------------------------------------------------------