VII/147 Photometric Catalog of Northern Bright Galaxies (Kodaira+ 1992)
Photometric Catalog of Northern Bright Galaxies Kodaira K., Okamura S., Ichikawa S., Hamabe M., Watanabe M. <National Astron. Obs. of Japan (1992)>
ADC_Keywords: Galaxy catalogs ; Magnitudes Description: This catalog presents homogeneous photometric parameters of 791 northern bright galaxies based on surface photometry. The observations were made with the 105 Schmidt telescope at Kiso Observatory in the photographic V band, mostly during 1984-1988. This catalog is the first machine-readable version of Part II of the "Photometric Atlas of Northern Bright Galaxies" (Kodaira et al. 1990). The fields in the catalog include galaxy name, position (B1950), morphological type, radial velocity, galactic V-band absorption, effective radius, apparent magnitude, and parameters of the ellipse fitted to the photometric galaxy image. Abstract : Galaxies are the most massive, luminous astronomical objects bound by self gravity and comprise the major fraction of luminous mass in the universe. Recent investigations of galaxies often require statistical analysis of a large body of observational data. High degree of homogeneity of the data is the key point to the success of such investigations. This catalog presents homogeneous photometric parameters of 791 northern bright galaxies on the basis of modern photographic surface photometry. Sample galaxies are taken from the Revised Shapley-Ames Catalog of Bright Galaxies (Sandage and Tammann 1981) and most of them are members of the Local Super-cluster. Observations were made with the 105cm Schmidt telescope at the Kiso Observatory, Institute of Astronomy, University of Tokyo, in the photographic V band (Kodak IIa-D emulsion combined with a Schott GG 495 filter) mostly during 1984-1988. Sample galaxies photographed on a total of 280 Schmidt plates were scanned with the PDS 2020 GMS microdensitometer at the Kiso Observatory during April-August 1988. Data reduction for standard surface photometry was carried out using a software library SPIRAL (Ichikawa et al. 1987; Okamura 1988) during July-September 1988. The intensive plate measurement and data reduction secure high homogeneity of the present data. This catalog is the first machine-readable version (Ver.1) of Part II (The Catalog) of the 'Photometric Atlas of Northern Bright Galaxies' (Kodaira et al. 1990), which also includes in Part III illustrative information such as images, isophotal maps, luminosity profiles, and ellipses fitted to the isophotes. Image data of sample galaxies can be obtained in FITS format magnetic tapes upon request, and it is planned to distribute them on CD-ROMs. We request that those errors in this catalog that are found by the user be transmitted to S. Ichikawa, National Astronomical Observatory, Mitaka, Tokyo 181 Japan (e-mail : ) so that they can be corrected in future versions. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file data.dat 118 791 The Catalog of Northern Bright Galaxies notes.dat 72 72 Notes on peculiar objects
See also: VII/51 : Revised Shapley-Ames Catalog of Bright Galaxies (Sandage+, 1981) (RSA) VII/112 : RC2 Catalogue (de Vaucouleurs+ 1976) Byte-by-byte Description of file: data.dat
Bytes Format Units Label Explanations
1- 7 A7 --- Name The galaxy name taken from RSA (VII/51) 9- 10 I2 h RAh Hours of right ascension taken from RSA (VII/51) (Equinox 1950.0). 11- 12 I2 min RAm Minutes of R.A. (B1950) 13- 14 I2 s RAs Seconds of R.A. (B1950) 16 A1 --- DE- Declination sign taken from RSA (VII/51) (Equinox 1950.0). 17- 18 I2 deg DEd Degrees of declination (B1950) 19- 22 F4.1 arcmin DEm Minutes of declination (B1950) 24- 37 A14 --- MType Morphological type taken from RC2 and decoded by the authors. 39- 40 I2 --- TType Morphological type index from RC2 (VII/112) 41 A1 --- u_TType [:?] uncertainty/peculiarity code for TType 42- 45 I4 km/s RVlg Radial velocity relative to the centroid of the Local Group taken from RSA (VII/51) 47- 50 F4.2 mag Av Galactic absorption in the V band calculated as AV = 0.75 AB, using the AB tabulated in Burstein and Heiles (1984ApJS...54...33B) 51 A1 --- n_Av Code for galactic absorption as in Burstein and Heiles (1984ApJS...54...33B). 53- 57 F5.2 mag Vmag Total apparent (asymptotic) magnitude in the V band derived in the growth curve fitting; estimated 1-sigma internal accuracy 0.10 mag. 59- 62 F4.2 [arcsec] Reff Logarithm of the effective radius derived in the growth curve fitting; estimated internal accuracy 0.03. 63 A1 --- u_Reff Code for the effective radius (a colon shows values smaller than Re = 15 arcsec). 64- 65 A2 --- Gcurve Category of growth curve template used (2) 67- 71 F5.2 mag Vmag25 Apparent magnitude integrated in the 25mag/arcsec2 isophote (3) 73- 76 F4.2 [arcsec] a Logarithm of semi-major axis of the envelope ellipse; estimated internal accuracy 0.03. 78- 81 F4.2 --- b/a Axis ratio of the envelope ellipse; estimated internal accuracy 0.04. 83- 85 I3 deg ePA Angle of the envelope ellipse (1) 87- 90 F4.1 deg fPA Position angle of the frame (1) 92- 96 F5.2 mag/arcsec2 mu Effective surface brightness (5) 97 A1 --- u_mu Uncertainty code for mu (5) 98-101 F4.2 [arcsec] Aeff Logarithm of the semi-major axis of effective ellipse (5) 102 A1 --- u_Aeff Uncertainty code for Aeff (5) 103-106 F4.2 --- B/A The axis ratio of the effective ellipse; the estimated internal accuracy is 0.03. 108-111 F4.2 --- c1 The luminosity concentration index 1/4,3/4 (4) 112 A1 --- u_c1 Uncertainty code for c1 (4) 113-116 F4.2 --- c2 The luminosity concentration index 1/2,3/4 (4) 117 A1 --- u_c2 Uncertainty code for c2 (4) 118 A1 --- Note [N] indicates that a note is given on the galaxy at the end of the catalog (Kodaira et al. 1990).
Note (1): The position angle is measured counter-clockwise from upward direction with respect to the frame; estimated internal accuracy is 4.5 degrees. ePA refers to the frame measured with the PDS microdensitometer, and fPA is the angle between North and the upward direction of the frame was given in column (5) of Table 4.2 in Kodaira et al. (1990), separately from the main catalog. The true position angle can be computed as the sum of the ePA and fPA angles. Note (2): The type category of the template of the growth curve used in the derivation of the apparent total magnitude and the effective radius given in the preceding two columns. The type category is indicated only when the template of a different category from that to which the galaxy belongs was used. Note (3): Vmag25 is the magnitude in the V band integrated within the envelope ellipse, i.e., the ellipse fitted to the isophote of 25 mag/arcsec2 (see section 1.7 of Kodaira et al. 1990 for detail). Estimated internal accuracy is 0.10 mag. Note (4): c1 is the computed as the ratio of (a*b)(1/2) of the ellipses that encircle 1/4 and 3/4 of the total luminosity, as explained in section 1.7 of Kodaira et al. (1990), and has an estimated internal accuracy of 0.01; c2 is computed as the ratio of (a*b)**(1/2) of the ellipses that encircles 1/2 and 3/4 of the total luminosity, and has an estimated internal accuracy of 0.03. A colon in u_c1 indicates that (a1*b1)(1/2) is smaller than 15arcsec, where a1 and b1 are the semi-major and semi-minor axes of the ellipse that encircles 1/4 of the total luminosity; a colon in u_c2 indicates that (ae*be)**(1/2) is smaller than 15 arcsec, where ae and be are the semi-major and semi-minor axes of the effective ellipse. Note (5): The effective ellipse encircles half of the total luminosity; the estimated internal accuracy of mu is 0.19mag, and the estimated internal accuracy of Aeff is 0.04[arcsec]. A colon in u_mu shows values smaller than 19.5, and a colon in u_Aeff indicates a semi-major axis smaller than 15arcsec.
Byte-by-byte Description of file: notes.dat
Bytes Format Units Label Explanations
1- 7 A7 --- Name The galaxy name taken from RSA. 8 A1 --- --- [:] 9- 72 A64 --- Text Text of note
Acknowledgements: The generation of machine-readable files and the data validation are carried out by the Astronomical Data Analysis Center of the National Astronomical Observatory, Japan, under the collaboration with the authors. Authors' addresses: K. Kodaira, National Astronomical Observatory, Mitaka, Tokyo, 181 Japan, S. Okamura, Department of Astronomy, University of Tokyo, Bunkyo-ku, Tokyo, 113 Japan, S. Ichikawa, National Astronomical Observatory, Mitaka, Tokyo, 181 Japan, M. Hamabe, Kiso Observatory, Institute of Astronomy, University of Tokyo, Mitake-mura, Kiso-gun, Nagano-ken, 397-01 Japan, M. Watanabe, AdIn Research Institute, 1-5-8, Jin-nan, Shibuya-ku, Tokyo, 150 Japan. History: * 01-Apr-1992: Catalog kindly supplied by Shiro Nishimura (Astronomical Data Center of Japan) to CDS. * 17-Jul-2004: Documentation standardized at CDS References : Burstein, D. and Heiles, C. 1984, Astrophys. J. Suppl., 54, 33. (1984ApJS...54...33B) de Vaucouleurs, G., de Vaucouleurs, A. and Corwin, H. G. Jr. 1976, Second Reference Catalogue of Bright Galaxies (Austin: Univ. Texas Press ) (RC2) (Cat. VII/112) Ichikawa, S., Okamura, S., Watanabe, M., Hamabe, M., Aoki, T. and Kodaira, K. 1987, Ann. Tokyo Astr. Obs., 2nd Ser., 21, 285. (1987AnTok..21..285I) Kodaira, K., Okamura, S., Ichikawa, S., Hamabe, M. and Watanabe, M. 1990, Photometric Atlas of Northern Bright Galaxies (Tokyo: Univ. Tokyo Press). Okamura, S. 1988, Publ. Astr. Soc. Pacific, 100, 524 (1988PASP..100..524O) Sandage, A. and Tammann, G. A. 1981, A Revised Shapley-Ames Catalog of Bright Galaxies (Washington: Carnegie Inst. of Washington) (RSA). (Cat. VII/51)
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