J/other/AstBu/70.1   Galaxies in Leo/Cancer region         (Karachentsev+, 2015)
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drwxr-xr-x 38 cats archive 4096 Aug 6 08:34 [Up] drwxr-xr-x 4 cats archive 4096 May 26 2021 [TAR file] -rw-r--r-- 1 cats archive 471 Nov 14 2017 .message -r--r--r-- 1 cats archive 5448 Jul 19 2015 ReadMe -rw-r--r-- 1 cats archive 442 Nov 14 2017 +footg5.gif -rw-r--r-- 1 cats archive 3477 Nov 14 2017 +footg8.gif -r--r--r-- 1 cats archive 42354 Feb 18 2015 leocan.dat [txt] [txt.gz] [fits] [fits.gz] [html]
Beginning of ReadMe : J/other/AstBu/70.1 Galaxies in Leo/Cnc region (Karachentsev+, 2015) ================================================================================ Large-scale structure and galaxy motions in the Leo/Cancer constellations. Karachentsev I.D., Nasonova O.G., Karachentseva V.E. <Astrophys. Bull., 70, 1 (2015)> =2015AstBu..70....1K ================================================================================ ADC_Keywords: Galaxy catalogs ; Redshifts ; Morphology Keywords: galaxies: kinematics and dynamics - galaxies: distances and redshifts - galaxies: groups Abstract: In the region of the sky limited by the coordinates RA=7.0h...12.0h, Dec=0deg...+20deg and extending from the Virgo Cluster to the South Pole of the Local Supercluster, we consider the data on the galaxies with radial velocities V_LG_< 2000km/s. For 290 among them, we determine individual distances and peculiar velocities. In this region, known as the local velocity anomaly zone, there are 23 groups and 20 pairs of galaxies for which the estimates of virial/orbital masses are obtained. A nearby group around NGC3379 = Leo I and NGC3627 as well as the Local Group show the motion from the Local Void in the direction of Leo cloud with a characteristic velocity of about 400 km/s. Another rich group of galaxies around NGC3607 reveals peculiar velocity of about -420km/s in the frame of reference related with the cosmic background radiation. A peculiar scattered association of dwarf galaxies Gemini Flock at a distance of 8Mpc has the radial velocity dispersion of only 20km/s and the size of approximately 0.7Mpc. The virial mass estimate for it is 300 times greater than the total stellar mass. The ratio of the sum of virial masses of groups and pairs in the Leo/Can region to the sum of stellar masses of the galaxies contained in them equals 26, which is equivalent to the local average density Omega_m(local)_=0.074, which is 3-4 times smaller than the global average density of matter. Description: The table contains original observational data on 543 galaxies in the Leo/Cancer region. The initial sample was extracted from HyperLeda Database; then fictitious "galaxies" (72%) were removed. Selecting the galaxies in our list, we also checked and updated their different characteristics. In particular, we have determined distances for 139 galaxies from the Tully-Fisher relation. The resulting sample includes 290 galaxies with individual distance estimates.

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