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J/A+AS/141/113      Coma extensive H photometry              (Andreon+, 2000)

Extensive near-infrared (H-band) photometry in Coma Andreon S., Pello R., Davoust E., Dominguez R., Poulain P. <Astron. Astrophys. Suppl. Ser. 141, 113 (2000)> =2000A&AS..141..113A (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, galaxy ; Photometry, infrared Keywords: galaxies: luminosity function, mass function - galaxies: clusters: individual: Coma (= Abell 1656) Abstract: We present extensive and accurate photometry in the near-infrared H band (about 1.62µm) of a complete sample of objects in an area of about 400arcmin2 toward the Coma cluster of galaxies. The sample, including about 300 objects, is complete down to H∼17mag, the exact value depending on the type of magnitude (isophotal, aperture, Kron) and the particular region studied. This is six magnitudes below the characteristic magnitude of galaxies, well into the dwarfs' regime at the distance of the Coma cluster. For each object (star or galaxy) we provide aperture magnitudes computed within five different apertures, the magnitude within the 22mag/arcsec2 isophote, the Kron magnitude and radius, magnitude errors, as well as the coordinates, the isophotal area, and a stellarity index. Photometric errors are 0.2mag at the completness limit. This sample is meant to be the zero-redshift reference for evolutionary studies of galaxies. Objects: ---------------------------------------------------------- RA (2000) DE Designation(s) ---------------------------------------------------------- 12 59 36.0 +27 57 42 Abell 1656 ---------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table3.dat 143 77 *List of detected sources in the region "Patch1" table4.dat 143 124 *List of detected sources in the region "0404" table5.dat 143 88 *List of detected sources in the region "0504"
Note on table3.dat, table4.dat, table5.dat: The studied region is ∼20x24arcmin wide, located ∼15arcmin North-East from the Coma cluster center. The approximate center of the region is 13 00 35 +28 14 35 (J2000). The final exposures are the regions Patch 1 (0403,0903,0304), 0404 and 0504.
See also: VII/42 : GMP catalogue: galaxies in the Coma cluster (Godwin+ 1983) Table 2: Nominal completness magnitudes ---------------------------------------- type patch1 0404 0504 ---------------------------------------- magiso 17.2 16.9 17.2 magKron 17.2 17.0 17.2 mag5" 17.4 17.2 17.4 mag10" 17.1 17.0 17.2 mag13" 16.9 17.8 17.9 mag14.5" 16.8 16.8 16.8 mag18.5" 16.5 16.5 16.5 Byte-by-byte Description of file: table3.dat table4.dat table5.dat
Bytes Format Units Label Explanations
2- 3 I2 h RAh Right ascension (J2000) 5- 6 I2 min RAm Right ascension (J2000) 8- 11 F4.1 s RAs Right ascension (J2000) 13 A1 --- DE- Declination sign (J2000) 14- 15 I2 deg DEd Declination (J2000) 17- 18 I2 arcmin DEm Declination (J2000) 20- 21 I2 arcsec DEs Declination (J2000) 23- 27 F5.2 mag Hmag5 H magnitude within the aperture 5" 29- 32 F4.2 mag e_Hmag5 rms uncertainty on Hmag5 (1) 34- 38 F5.2 mag Hmag10 H magnitude within the aperture 10" 40- 43 F4.2 mag e_Hmag10 rms uncertainty on Hmag10 (1) 45- 49 F5.2 mag Hmag13 ?=99.99 H magnitude within the aperture 13" (2) 51- 54 F4.2 mag e_Hmag13 ?=9.99 rms uncertainty on Hmag13 (1) 56- 60 F5.2 mag Hmag14.5 ?=99.99 H magnitude within the aperture 14.5" 62- 65 F4.2 mag e_Hmag14.5 ?=9.99 rms uncertainty on Hmag14.5 (1) 67- 71 F5.2 mag Hmag18.5 ?=99.99 H magnitude within the aperture 18.5" 73- 76 F4.2 mag e_Hmag18.5 ?=9.99 rms uncertainty on Hmag18.5 (1) 78- 82 F5.2 mag Isomag Isophotal magnitude at µ=22mag/arcsec2 84- 87 F4.2 mag e_Isomag rms uncertainty on Isomag 89- 93 F5.2 mag Kronmag Kron magnitude (3) 95- 98 F4.2 mag e_Kronmag rms uncertainty on Kronmag 101-103 I3 arcsec Area Isophotal area (at µ=22mag/arcsec2) 105-108 F4.2 --- ell Ellipticity 111-113 I3 deg PA Position angle (from North to East) 115-117 F3.1 arcsec Radius Kron radius, or 1.8 arcsec if the latter is larger 120-123 F4.2 --- Stellar Stellarity index as defined by Sextractor (4) 125-143 A19 --- Name Name (5)
Note (1): Errors computed by Sextractor. Listed errors do not include photometric zero-point errors (see Sect. 3.7), those arising from the compositing, and implicitly assume a gaussian or poissonian error distribution. Note (2): "99.99" means that no measure is available (usually because the object is too small or too faint for its flux to be measured through a large aperture). Note (3): Kron magnitudes are computed by integrating the flux in an area 2.5 times larger than the Kron area, with a minimum aperture radius of 1.8 arcsec. Note (4): When Index ≲0.3, objects are identified as galaxies, whereas Index ≳0.7 (for 0404 and 0504) and Index ≳0.8 (for patch1) correspond to stars. The difference between fields is due to seeing conditions. Note (5): the acronyms are: 5C: Wilson, 1970MNRAS.151....1W CSO: Sanduleak & Pesch, 1990ApJS...72..291S GMP: Godwin, Metcalfe & Peach (1983, Cat. VII/42) NGC: Dreyer, See Cat. VII/118 NGP9: Odewahn & Aldering, 1995, Cat. VII/204 USNO: Monet et al., 1999, The USNO-A1 guide star catalog, Washington DC, US Naval Observatory, see Cat. I/243, USNO-A1 and Cat. I/252, USNO-A2.0
Acknowledgements: Stefano Andreon History: * 03-Jan-2000: initial version * 01-Dec-2000: Some names, troncated in the original version, were completed. For GMP 2834, the original position 0 00 15.1 +28 05 12 was corrected into 13 00 15.1 +28 05 12
(End) Patricia Bauer [CDS] 03-Jan-2000
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

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