J/ApJS/97/77 Catalog of Coma Cluster Galaxies (Doi+ 1995)
Automated Surface Photometry for the Coma Cluster Galaxies: The Catalog Doi M., Fukugita M., Okamura S., Tarusawa K. <Astrophys. J. Suppl. Ser. 97, 77 (1995)> =1995ApJS...97...77D
ADC_Keywords: Clusters, galaxy; Galaxies, optical; Positional data; Magnitudes, photographic Keywords: galaxies: clusters: individual (Coma) -- galaxies: fundamental parameters -- galaxies: photometry Abstract: A homogeneous photometry catalog is presented for 450 galaxies with B25.5 ≤ 16 mag located in the 9.8 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). File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1 103 479 Catalog
Byte-by-byte Description of file: table1
Bytes Format Units Label Explanations
1- 3 I3 --- Num [1/450]+= Internal number [DFO95] 5- 12 A8 --- CGCG Identification from CGCG VII/4A 13- 18 A6 --- NGC_IC Identification from NGC/IC catalogs 19- 24 A6 --- UGC Identification from UGC VII/26D 25- 32 I8 km/s cz ? Redshift from CfA redshift survey 34- 35 I2 h RAh *Right ascension (1950.0) 36- 37 I2 min RAm R.A. 38- 42 F5.2 s RAs R.A. 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. 54 A1 --- Blend *[AM] Deblending flag 55- 60 F6.2 mag B25.5 *Isophotal magnitude B25.5. 61- 66 F6.2 mag Bt *? Total magnitude Bt 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 SB25.5 *Mean surface brightness 89- 94 F6.3 --- cIndex Concentration index defined by Eq.2 in paper 95- 99 F5.1 arcsec re25.5 *Effective radius 101 A1 --- Type *[ELU] E=early, L=late, U=unclassified 103 A1 --- Star *[*] Objects found to be blended stars
Note on RAh, DEd: Accuracy of equatorial coordinates are 0.6 arcsec (rms). Note on 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. Note on B25.5: The mean error is estimated to be 0.1 mag. Note on Bt: 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 BT (defined by RC2) commonly used in the literature; the offset between the two total magnitudes is found to be ∼0.03 mag (Bt is brighter). When a good fit is not obtained for the three points, Bt is not listed. Note on 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. Note on SB25.5: Mean surface brightness defined by equation (3) in the printed paper with muL = 25.5 mag/arcsec^2. Note on re25.5: Effective radius that contains half the flux of B25.5. Note on 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. Note on 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.
Origin: AAS CD-ROM series, Volume 4, 1995 Lee Brotzman [ADS] 08-May-95 Modifications at CDS: The blank internal numbers in table1 (col. "Num") have been replaced by the actual number.
(End) [CDS] 12-Jul-1995
|The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line|