Distribution and motions of atomic hydrogen in lenticular galaxies. XI - A summary of H I observations and evolutionary scenarios. van Driel, W. & van Woerden, H. Astronomy & Astrophysics, 243:71-92, 1991.
Paper abstract bibtex It is considered that the H I velocity fields in most early-type galaxies can be described by circular rotation, sometimes in a considerably warped H I distribution. The derived rotation curves are essentially flat, sometimes out to 10 optical disk scale lengths, denoting the presence of massive dark halos, which is substantiated by detailed disk/bulge/halo mass model fits to the surface photometry and rotation curves of 3 galaxies. The most probable origins of the H I gas in SO galaxies seem to be either accretion from another galaxy, though not in the recent past, or a burnt-out disk scenario, for the lenticulars with an outer H I ring, where the denser inner H I disk has been consumed in star formation.
@article{
title = {Distribution and motions of atomic hydrogen in lenticular galaxies. XI - A summary of H I observations and evolutionary scenarios},
type = {article},
year = {1991},
identifiers = {[object Object]},
keywords = {Barred Galaxies,Gas Dynamics,H I Regions,Hydrogen Atoms,Interstellar Gas,Lenticular Bodies,Mass To Light Ratios,Spiral Galaxies,Star Formation Rate},
pages = {71-92},
volume = {243},
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abstract = {It is considered that the H I velocity fields in most early-type galaxies can be described by circular rotation, sometimes in a considerably warped H I distribution. The derived rotation curves are essentially flat, sometimes out to 10 optical disk scale lengths, denoting the presence of massive dark halos, which is substantiated by detailed disk/bulge/halo mass model fits to the surface photometry and rotation curves of 3 galaxies. The most probable origins of the H I gas in SO galaxies seem to be either accretion from another galaxy, though not in the recent past, or a burnt-out disk scenario, for the lenticulars with an outer H I ring, where the denser inner H I disk has been consumed in star formation.},
bibtype = {article},
author = {van Driel, W. and van Woerden, H.},
journal = {Astronomy & Astrophysics}
}
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