Velocities of Planetary Nebula in 5 galaxies

DOI

The origins of S0 galaxies remain obscure, with various mechanisms proposed for their formation, likely depending on environment. These mechanisms would imprint different signatures in the galaxies' stellar kinematics out to large radii, offering a method for distinguishing between them. We aim to study a sample of six S0 galaxies from a range of environments, and use planetary nebulae (PNe) as tracers of their stellar populations out to very large radii, to determine their kinematics in order to understand their origins. Using a special-purpose instrument, the Planetary Nebula Spectrograph, we observe and extract PNe catalogues for these six systems. We show that the PNe have the same spatial distribution as the starlight, that the numbers of them are consistent with what would be expected in a comparable old stellar population in elliptical galaxies, and that their kinematics join smoothly onto those derived at smaller radii from conventional spectroscopy. The high-quality kinematic observations presented here form an excellent set for studying the detailed kinematics of S0 galaxies, in order to unravel their formation histories. We find that PNe are good tracers of stellar kinematics in these systems. We show that the recovered kinematics are largely dominated by rotational motion, although with significant random velocities in most cases.

Cone search capability for table J/A+A/549/A115/pne (Catalog of PNe in 5 galaxies:)

Identifier
DOI http://doi.org/10.26093/cds/vizier.35490115
Source https://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/A+A/549/A115
Related Identifier https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/549/A115
Related Identifier http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/549/A115
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_b2find&identifier=ivo://CDS.VizieR/J/A+A/549/A115
Provenance
Creator Cortesi A.; Arnaboldi M.; Coccato L.; Merrifield M.R.; Gerhard O.,Bamford S.; Romanowsky A.J.; Napolitano N.R.; Douglas N.G.; Kuijken K.,Capaccioli M.; Freeman K.C.; Chies-Santos A.L.; Pota V.
Publisher CDS
Publication Year 2013
Rights https://cds.unistra.fr/vizier-org/licences_vizier.html
OpenAccess true
Contact CDS support team <cds-question(at)unistra.fr>
Representation
Resource Type Dataset; AstroObjects
Discipline Astrophysics and Astronomy; Exoplanet Astronomy; Galactic and extragalactic Astronomy; Interstellar medium; Natural Sciences; Observational Astronomy; Physics