Morphology and kinematics of HI in dust-lane elliptical galaxies
Morganti, Raffaella · Oosterloo, Tom · Sadler, Elaine · Vergani, Daniela
Original · EN
We present the results of the HI observations of four dust-lane ellipticals. The HI detected is regularly distributed in disks or rings. Moreover, in three of the four objects we have detected a very large amount of neutral hydrogen with values of MₕI/LB that are at the end of the distribution characteristic of ellipticals and similar to what typically found in spiral galaxies. Thus, these dust-lane ellipticals may represent the results of major mergers as seen at a late stage of the evolution. The regular HI distribution and kinematics has allowed to derive values of M/LB 20 at distances of 5 Rₑ from the centre. Evidence for an increase of the dark matter contribution at larger radii can also be derived from the flat rotation curves observed in some of the observed galaxies.
English translation
This paper has no Arabic translation yet. Be the first: it takes a few seconds, and the result is stored for every future reader.