J/AJ/109/517 Photoelectric types of bright galaxies (Buta+ 1995) ================================================================================ Integrated photoelectric magnitudes and color indices of bright galaxies in the Johnson UBV system. Buta R., Corwin H.G.Jr., de Vaucouleurs G., de Vaucouleurs A., Longo G. =1995AJ....109..517B (SIMBAD/NED BibCode) ================================================================================ ADC_Keywords: Galaxies, photometry ; Photometry, classification Abstract: The photoelectric total magnitudes and color indices published in the Third Reference Catalogue of Bright Galaxies (RC3, Cat. ) are based on an analysis of ~26000 B, 25000 B-V, and 17000 U-B multiaperture measurements available up to mid 1987 from nearly 350 sources. This paper provides the full details of the analysis and estimates of internal and external errors in the parameters. The derivation of the parameters is based on techniques described by de Vaucouleurs & Corwin (1977ApJS...33..219D) whereby photoelectric multiaperture data are fitted by mean Hubble-type-dependent curves which describe the integral of the B-band flux and the typical B-V and U-B integrated color gradients. A sophisticated analysis of the residuals of these measurements from the curves was made to allow for the random and systematic errors that affect such data. The result is a homogeneous set of total magnitudes B^A^_T_, total colors (B-V)_T_ and (U-B)_T_, and effective colors (B-V)_e_ and (U-B)_e_ for more than 3000 bright galaxies in RC3. File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file table6 22 1469 Photometric types -------------------------------------------------------------------------------- See also: VII/155 : Third Reference Cat. of Bright Galaxies (RC3) (de Vaucouleurs+ 1991) Byte-by-byte Description of file: table6 -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 12 A12 --- Name Galaxy name as in RC3 (Cat. ) 14- 15 I2 --- Tc Catalogue type 16 A1 --- u_Tc [:?] Uncertainty flag on Tc 18- 19 I2 --- Tp Photometric type -------------------------------------------------------------------------------- History: Prepared via OCR at CDS. ================================================================================ (End) James Marcout, Patricia Bauer [CDS] 13-Jun-1997