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
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