TY - JOUR
T1 - The external origin of the gas in S0 galaxies
AU - Bertola, Francesco
AU - Buson, Lucio M
AU - Zeilinger, Werner
N1 - Affiliations: Dipartimento di Astronomia, Universita` di Padova, Vicolo dell'Osservatorio 5, I-35122 Padova, Italy; Osservatorio Astronomico, Vicolo dell'Osservatorio 5, I-35122 Padova, Italy; European Southern Observatory, Karl Schwarzschild Strasse 2, D-8046 Garching bei München, Germany
Adressen: Bertola, F.; Dipartimento di Astronomia; Universita` di Padova; Vicolo dell'Osservatorio 5 I-35122 Padova, Italy
Source-File: AstroScopus.csv
Import aus Scopus: 2-s2.0-11944260821
Importdatum: 14.12.2006 14:08:00
PY - 1993
Y1 - 1993
N2 - In this Letter we present three new cases of S0 galaxies, namely NGC 2768, NGC 4379, and IC 4889, out of a sample of 15, in which the gas is counterrotating or strongly kinematically decoupled with respect to the stellar body of the galaxy. Assuming gas infall with randomly oriented angular momentum, this result implies that in 40% of the galaxies in our sample, the ionized gas is of external origin. However, several pieces of evidence suggest that the acquisition of external gas in S0 galaxies can be even more general.
AB - In this Letter we present three new cases of S0 galaxies, namely NGC 2768, NGC 4379, and IC 4889, out of a sample of 15, in which the gas is counterrotating or strongly kinematically decoupled with respect to the stellar body of the galaxy. Assuming gas infall with randomly oriented angular momentum, this result implies that in 40% of the galaxies in our sample, the ionized gas is of external origin. However, several pieces of evidence suggest that the acquisition of external gas in S0 galaxies can be even more general.
M3 - Article
SN - 0004-637X
VL - 401
JO - The Astrophysical Journal: an international review of astronomy and astronomical physics
JF - The Astrophysical Journal: an international review of astronomy and astronomical physics
IS - 2 PART 2
ER -