J/other/AstBu/70.24 Updated 2MFGC catalog (Mitronova+, 2015) ================================================================================ Visual survey of 18020 objects from the 2MFGC catalog. Mitronova S.N., Korotkova G.G. =2015AstBu..70...24M ================================================================================ ADC_Keywords: Galaxies, IR ; Galaxy catalogs ; Infrared sources ; Photometry, infrared ; Morphology Keywords: galaxies: spiral - catalogs - surveys Abstract: We spent a solid overview of the infrared and visual images 18020 2MFGC galaxies selected in the automatic mode of 1.64 million. Extended objects XSC-2MASS catalog with respect infrared axes, a/b>=3. This work is aimed at excluding "spurious" objects from the list of flattened galaxies. Browse more than 80000 images in different filters were able to identify 1512 (8.4% of the total) of such objects. Found duplicate in 2MASS measurements of 23 galaxies with, respectively, two rooms 2MFGC, and 3 flat galaxy, not accounted for in other directories and in close proximity with the three "spurious" galaxies. The main part of the excluded facilities accounted for magnitudes less Ks=13mag. They are characterized by small angular size, low surface brightness and the concentration index. Exception objects identified significantly reduced the spread of values in the two-dimensional distribution. Results of work in the form of notes will be placed in the astronomical database VizieR, NED, HYPERLEDA. File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file 2mfgc.dat 150 18020 Updated 2MFGC (2MASS-selected Flat Galaxy Catalog) -------------------------------------------------------------------------------- See also: J/other/BSAO/57.5 : 2MASS-selected Flat Galaxy Catalog, 2MFGC (Mitronova+ 2004) VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006) Byte-by-byte Description of file: 2mfgc.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 5 I5 --- 2MFGC [1/18020] 2MFGC galaxy number 7- 8 I2 h RAh Hour of Right Ascension (J2000) 9- 10 I2 min RAm Minute of Right Ascension (J2000) 11- 15 F5.2 s RAs Second of Right Ascension (J2000) 17 A1 --- DE- Sign of the Declination (J2000) 18- 19 I2 deg DEd Degree of Declination (J2000) 20- 21 I2 arcmin DEm Arcminute of Declination (J2000) 22- 25 F4.1 arcsec DEs Arcsecond of Declination (J2000) 27- 31 F5.1 arcsec r ? K-band fiducial elliptical Kron radius 33- 37 F5.2 mag Jmag ? J-band fiducial elliptical Kron magnitudes 39- 43 F5.2 mag Hmag ? H-band fiducial elliptical Kron magnitudes 45- 49 F5.2 mag Kmag ? K-band fiducial elliptical Kron magnitudes 51- 53 F3.2 --- b/a [0/1] Axis ratio for the J+H+K combined "super coadd" image 55- 57 F3.2 --- b/a1 [0/1] Axis ratio averaged by the individual J,H,K-band images 59- 61 I3 deg PA [-90/90]? positional angle for the "super coadd" image measured towards NW 62- 65 F4.1 --- CI [1/12]?=0 J-band concentration index (3/4 vs 1/4 light radii) 67- 73 I7 --- LEDA ? Galaxy number in the LEDA database 75- 76 F2.1 arcmin d2L [0/0.6]? Distance from the 2MASS-center to LEDA-object center 78- 93 A16 --- NED Galaxy number in the NED database 94- 95 F2.1 arcmin d2N [0/0.6]? Distance from the 2MASS-center to NED-object center 97 A1 --- f_2MFGC [#] indicates a "spurious" object (1) 98-150 A53 --- Notes Results of visual review 2MFGC-galaxies (2) -------------------------------------------------------------------------------- Note (1): the hash (#) indicate "spurious" objects, which in our view should be excluded from the list. The 23 duplicated galaxies are also marked with the "#", followed by the alternative 2MFGC entry. Note (2): Abbreviations used ((the signs ":" and "?" indicate our doubts): PofG = pair of galaxies GG = two or more galaxies G+S = galaxy and star on line SS = two or more stars on line IRbar = in NIR only bar of galaxy IRcen = in NIR only central part of galaxy PART = in NIR part of galaxy nEon = no Edge-on galaxy asymm = asymmetrical form of galaxy Interacting = interacting systems 2obj, 3obj = multiple objects with small angular dimensions MIST = mistake on the 2MASS images E = elliptical morphology S = spiral morphology (S0, Sa, Sb, Sc, Sd, Sm) Irr = irregular galaxies +S, +SS = one or more stars with comparable size is projected near +G, +GG = one or more galaxies with comparable size is projected nearby -------------------------------------------------------------------------------- Acknowledgements: Sofia Mitronova, mit(at)sao.ru History: * 12-Dec-2014: submitted to CDS (Sofia Mitronova) * 27-Mar-2015: the "spurious" indicator (#) was isolated in a dedicated column (f_2MFGC) ================================================================================ (End) Sofia N. Mitronova [SAO RAS], Patricia Vannier [CDS] 12-Dec-2014