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VII/219             Revised Flat Galaxy Catalogue (RFGC)   (Karachentsev+, 1999)

The revised flat galaxy catalogue Karachentsev I.D., Karachentseva V.E., Kudrya Y.N., Sharina M.E., Parnovsky S.L. <Bull. Special Astrophys. Obs., 47, 5 (1999)> =1999BSAO...47....5K
ADC_Keywords: Galaxy catalogs ; Morphology ; Magnitudes Keywords: galaxies: spiral - galaxies: catalogues - galaxies: large-scale motions in the Universe Description: The Flat Galaxy Catalog (FGC) is the result of a systematic search for disk-like edge-on galaxies with a diameter larger than a=40arcsec and major-to-minor axis ratio a/b>7 from Palomar Observatory and ESO/SERC surveys; it contained 4455 objects covering about 56% of the whole sky (Karachentsev et al., 1993AN....314...97K, see Cat. VII/162). The main reasons for preparing a new, improved and supplemented catalogue version were the following: - a possibility of remeasuring the coordinates of flat galaxies with a higher accuracy using the Digital Sky Survey; - the inclusion the data about "red" galaxy diameters which were absent earlier; - a reduction the diameters measured on the J and R films of the ESO/SERC to the diameter system of the POSS-I (near to a25 system) that eliminated the difference in photometric depth between two parts of the catalogue (Kudrya et al. 1997PAZh...23...15K); - a calculation of total apparent magnitudes (with a standard error about 0.25mag) for all flat galaxies basing on angular diameters, surface brightnesses, and other parameter data (Kudrya et al. 1997PAZh...23..730K); - a possibility to determine the Galaxy absorption values in the region of each flat galaxy placing using new IR data (Schlegel et al. 1998ApJ...500..525S). - a necessity to remove the faults noted during the work with the FGC data. The structural differences between old and new catalogue versions are: - both the parts, FGC and FGCE, have been joined in the RFGC (Revised Flat Galaxy Catalogue) where the galaxies are ranged according to their Right Ascensions for the epoch J2000.0; - the Addendum have been omitted; - the Notes describing concrete object characteristics have been included in the main corpus of the catalogue, some details were omitted; - the lists of identification of the FGC and the FGCE galaxies have been omitted because these data are accessible now due to different galaxy databases (NED, LEDA etc). File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file rfgc.dat 164 4444 List of new Local Volume dwarf candidates
See also: VII/162 : Flat Galaxy Catalogue (Karachentsev+ 1993) VII/119 : Catalogue of Principal Galaxies (PGC) (Paturel+ 1989) Byte-by-byte Description of file: rfgc.dat
Bytes Format Units Label Explanations
1- 4 I4 --- RFGC *[1,4236]?+ Galaxy number 7- 10 I4 --- FGC(E) ? FGC (Cat. VII/162) galaxy number 11 A1 --- m_FGC(E) [E] E when FGCE number 13- 17 I5 --- PGC ? PGC (Cat. VII/119) galaxy number 20- 21 I2 h RAh Right ascension (J2000.0) 23- 24 I2 min RAm Right ascension (J2000.0) 26- 29 F4.1 s RAs Right ascension (J2000.0) 31 A1 --- DE- Declination sign (J2000.0) 32- 33 I2 deg DEd Declination (J2000.0) 35- 36 I2 arcmin DEm Declination (J2000.0) 38- 39 I2 arcsec DEs Declination (J2000.0) 42- 43 I2 h RA1950h Right ascension (J1950.0) 45- 46 I2 min RA1950m Right ascension (J1950.0) 48- 51 F4.1 s RA1950s Right ascension (J1950.0) 53 A1 --- DE1950- Declination sign (J1950.0) 54- 55 I2 deg DE1950d Declination (J1950.0) 57- 58 I2 arcmin DE1950m Declination (J1950.0) 60- 61 I2 arcsec DE1950s Declination (J1950.0) 64- 69 F6.2 deg GLON Galactic longitude 72- 77 F6.2 deg GLAT Galactic latitude 79- 81 I3 deg PA Positional angle 83- 86 I4 --- --- ? RFGC Galaxy number again 88- 92 F5.2 arcmin aO *Major blue diameter 94- 97 F4.2 arcmin bO *Minor blue diameter 99-103 F5.2 arcmin aE *Major red diameter 105-108 F4.2 arcmin bE *Minor red diameter 110-113 F4.1 mag Btot Calculated total apparent magnitude 115-118 F4.2 mag AB Galactic extinction in the B - band 121-122 A2 --- MType *Morphological type of the galaxy 124 I1 --- As *[0,2] Index of apparent asymmetry of galaxy shape 126-128 A3 --- SB *[IV ] Index of the mean surface brightness 130-131 I2 --- N *Number of significant neighbours 133-164 A32 --- Notes *Notes about the galaxy or environment
Note on RFGC: the galaxies having reduced diameters a(O) less than 0.6arcmin are included in the catalogue without new RFGC number. Note on aO, bO: for FGCE galaxies the conversion from the ESO/SERC diameter system (J) to the POSS-I one (O) have been made according to the formulae: a(O) = 0.80788 a(J), b(O) = 0.7827 b(J); Note on aE, bE: for FGCE galaxies the conversion from the ESO/SERC diameter system (R) to the POSS-I one (E) have been made according to the formulae: a(E) = 0.8640 a(R), b(E) = 0.9730 b(R); Note on MType: morphological type of spiral according to the Hubble classification. Note that Sb = 3, Sc = 5 etc in number designation; Note on As: 0 means poorly defined, 2 = pronounced Note on SB: The index varies from I = high to IV = very low surface brightness Note on N: N is the number of significant neighbours with angular diameter in the range from aO/2 to 2*aO in a circle of R=10*aO Note on Notes: Notes describing the galaxy morphological peculiarities and/or the galaxy environment. The non-significant companion galaxy diameters and mutual distances are expressed in arcmin.
Acknowledgements: Sharina Rita E.
(End) Patricia Bauer, Francois Ochsenbein [CDS] 28-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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