Recent observations with the Australia Telescope Compact Array show that the elliptical galaxy NGC 5266 has a disk of neutral hydrogen extending to almost 10Re. This HI disk lies along the galaxy's major axis, at right angles to the inner minor-axis dust lane. The geometry and kinematics of the gas will allow us to determine both the intrinsic shape of the stellar galaxy and the mass distribution. The mass-to-light ratio M/L_B rises from about 2 in the central regions to ~12 at 9Re (H0=50 km/s/Mpc).
HI in the Dusty Elliptical Galaxy NGC5266
PIZZELLA, ALESSANDRO;BERTOLA, FRANCESCO
1995
Abstract
Recent observations with the Australia Telescope Compact Array show that the elliptical galaxy NGC 5266 has a disk of neutral hydrogen extending to almost 10Re. This HI disk lies along the galaxy's major axis, at right angles to the inner minor-axis dust lane. The geometry and kinematics of the gas will allow us to determine both the intrinsic shape of the stellar galaxy and the mass distribution. The mass-to-light ratio M/L_B rises from about 2 in the central regions to ~12 at 9Re (H0=50 km/s/Mpc).
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