The stellar dynamics and mass of NGC 1316 using the radial velocities of planetary nebulae

Jun, 1998
39 pages
Published in:
  • Astrophys.J. 507 (1998) 759
e-Print:
Report number:
  • OAC-17-06-1998

Citations per year

1998200420102016202202468
Abstract: (arXiv)
We present a study of the kinematics of the outer regions of the early-type galaxy NGC 1316, based on radial velocity measurements of 43 planetary nebulae as well as deep integrated-light absorption line spectra. The smoothed velocity field of NGC 1316 indicates fast rotation at a distance of 16 kpc, possibly associated with an elongated feature orthogonal to the inner dust lanes. The mean square stellar velocity is approximately independent of radius, and the estimated total mass of the system is 2.6 x 10^11 M_sun within a radius of 16 kpc, implying an integrated mass-to-light ratio of M/L_B = 8.
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