CDROM/APJS/V97/P077 Catalog of Coma Cluster Galaxies (Doi+ 1995) ================================================================================ Automated Surface Photometry for the Coma Cluster Galaxies: The Catalog M. Doi, M. Fukugita, S. Okamura, & K. Tarusawa <1995, ApJS, 97, 77> =1995ApJS...97...77D ================================================================================ Abstract: A homogeneous photometry catalog is presented for 450 galaxies with B_25.5 <= 16 mag located in the 9.8 deg x 9.8 deg region centred on the Coma Cluster. The catalog is based on photographic photometry using an automated surface photometry software for data reduction applied to B-band Schmidt plates. The catalog provides accurate positions, isophotal and total magnitudes, major and minor axes, and a few other photometric parameters including rudimentary morphology (early or late type). Keywords: galaxies: clusters: individual (Coma) -- galaxies: fundamental parameters -- galaxies: photometry File Summary: -------------------------------------------------------------------------------- File Name Lrecl Records Explanations -------------------------------------------------------------------------------- table1.dat 103 479 Catalog -------------------------------------------------------------------------------- Byte-by-byte Description of file: table1.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 3 I3 --- Num Internal number 4 1X --- --- Blank 5-12 A8 --- CGCG Identification from CGCG 13-18 A6 --- NGC_IC Identification from NGC/IC catalogs 19-24 A6 --- UGC Identification from UGC 25-32 I8 --- cz []? Redshift from CfA redshift survey 33 1X --- --- Blank 34-35 I2 h RAh *Right ascension (1950.0) 36-37 I2 min RAm R.A. 38-42 F5.2 s RAs R.A. 43 1X --- --- Blank 44 A1 --- DE- Declination sign, always blank 45-46 I2 deg DEd *Declination (1950.0) 47-48 I2 arcmin DEm Dec. 49-52 F4.1 arcsec DEs Dec. 53 1X --- --- Blank 54 A1 --- Blend *[AM] Deblending flag 55-60 F6.2 mag B_25.5 *Isophotal magnitude B_25.5. 61-66 F6.2 mag B_t *[]? Total magnitude B_t 67-72 F6.1 arcsec a *Semimajor axis at 25.5 mag/arcsec2 73-78 F6.1 arcsec b *Semiminor axis at 25.5 mag/arcsec2 79-82 I4 deg PA Position angle of major axis 83-88 F6.2 mag SB_25.5 *Mean surface brightness 89-94 F6.3 --- c_in Concentration index defined by eq. 2 in paper 95-99 F5.1 arcsec r_e25.5 *Effective radius 100 1X --- --- Blank 101 A1 --- Type *[ELU] E=early, L=late, U=unclassified 102 1X --- --- Blank 103 A1 --- Star *[*] Objects found to be blended stars -------------------------------------------------------------------------------- Notes for file: table1.dat -------------------------------------------------------------------------------- RAh, DEd: Accuracy of equatorial coordinates are 0.6 arcsec (rms). Blend: 'A' and 'M' denote that these galaxies are deblended either automatically or manually. Manual deblending was done, when topology of the overlapping objects does not allow a unique solution, or when blended images are so large or complex that the deblending procedure requires too much computer memory. Photometric parameters may not be accurate for galaxies with these flags. B_25.5: The mean error is estimated to be 0.1 mag. B_t: The total magnitude is obtained by fitting the growth curve at the three faintest isophotal levels (dividing the intensity range between the peak and the threshold, 25.5 mag/s, into 20 levels) to the fiducial growth curves expected for the de Vaucouleurs profile (for E-type galaxies) and the exponential profile (for L-type galaxies), and then by reading the magnitude at 5 times the effective radius. For U-type galaxies, we average the two values obtained from the two profiles. Note that the definition of this total magnitude differs from that of B_T (defined by RC2) commonly used in the literature; the offset between the two total magnitudes is found to be ~0.03 mag (B_t is brighter). When a good fit is not obtained for the three points, B_t is not listed. a, b: Semimajor and semiminor axes at a surface brightness level of 25.5 mag/arcsec^2. 7-10% errors are expected for both parameters. SB_25.5: Mean surface brightness defined by equation (3) in the printed paper with mu_L = 25.5 mag/arcsec^2. r_e25.5: Effective radius that contains half the flux of B_25.5. Type: Morphology: 'E' (early, E-S0) or 'L' (late, Sa-Im), according to the criterion discussed in section 2 of the printed paper. The confidence level of the coincidence with RC3 morphology (early or late) is 87.5%. 'U' denotes a galaxy which is unclassified. Star: The objects are marked by asterisks when they are classified as galaxies by the automated software, but turned out to be blended stars ("double" stars) upon visual inspection. -------------------------------------------------------------------------------- ================================================================================ (End) Lee Brotzman [ADS] 08-May-95