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Visual Survey of 18020 Objects from the 2MFGC Catalog

We conducted a continuous survey of infrared and visual images of 18020 2MFGC galaxies which were selected on an automatic basis from 1.64 mln extended objects of the 2MASS XSC catalog based on the ratio of the infrared axes a/b>=3. This work aims to exclude "false" objects from the list of flat galaxies. Having observed more than 80 thousand images in different filters, we were able to detect 1512 such objects (8.4% of the total number). We found 23 galaxies duplicated in 2MASS, which have two 2MFGC numbers correspondingly, and three flat galaxies which are not included in other catalogs and are located close to three "false" galaxies. Galaxies with magnitudes fainter than K_s =13 mag compose the main part of the excluded objects. They show small angular sizes, low surface brightnesses and concentration ratios. The results of the work in the form of the 2MFGC table with notes are given in the astronomical databases VizieR, NED, HyperLeda.

preprint2015arXivOpen access
S. N. MitronovaG. G. Korotkova
astro-ph.GA
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Open access2 authors1 topic
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S. N. MitronovaG. G. Korotkova

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