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The two brightest elliptical galaxies in the Eridanus A group, NGC 1400 andNGC 1407, have been observed in both the Washington T_1 and Kron-Cousins Ifilters to obtain photometry of their globular cluster systems (GCSs). Thisgroup of galaxies is of particular interest due to its exceptionally high M/Lvalue, previously estimated at ~3000h, making this cluster highlydark-matter-dominated. NGC 1400's radial velocity (549 km/s) is extremely lowcompared to that of the central galaxy of Eridanus A (NGC 1407 with $v_\odot$ =1766 km/s) and the other members of the system, suggesting that it is aforeground galaxy projected by chance onto the cluster. Using the shapes of theglobular cluster luminosity functions, however, we derive distances of 17.6 +/-3.1 Mpc to NGC 1407 and 25.4 +/- 7.0 Mpc to NGC 1400. These results supportearlier conclusions that NGC 1400 is at the distance of Eridanus A andtherefore has a large peculiar velocity. Specific frequencies are also derivedfor these galaxies, yielding values of S_N = 4.0 +/- 1.3 for NGC 1407 and S_N =5.2 +/- 2.0 for NGC 1400. In this and other respects, these two galaxies haveGCSs which are consistent with those observed in other galaxies.Comment: 14 pages (AASTeX), 3 postscript figures, submitted to the  Astronomical Journa

The Globular Cluster Systems of NGC 1400 and NGC 1407