A radial velocity survey of low Galactic latitude structures – II. The Monoceros Ring behind the Canis Major dwarf galaxy
Identifieur interne : 000E58 ( Istex/Curation ); précédent : 000E57; suivant : 000E59A radial velocity survey of low Galactic latitude structures – II. The Monoceros Ring behind the Canis Major dwarf galaxy
Auteurs : Blair C. Conn [Australie] ; Nicolas F. Martin [France, Australie] ; Geraint F. Lewis [Australie] ; Rodrigo A. Ibata [France, Australie] ; Michele Bellazzini [Italie, Australie] ; Mike J. Irwin [Australie]Source :
- Monthly Notices of the Royal Astronomical Society: Letters [ 1745-3925 ] ; 2005-11.
English descriptors
Abstract
An AAT/2dF Spectrograph Survey of low Galactic latitudes targeting the putative Canis Major dwarf galaxy and the (possibly) associated tidal debris of stars known as the Monoceros Ring, covering Galactic coordinates and , has revealed the presence of the Monoceros Ring in the background of the Canis Major dwarf galaxy. This detection resides at a Galactocentric distance of ∼18.9 ± 0.3 kpc (13.5 ± 0.3 kpc heliocentric), exhibiting a velocity of ∼132.8 ± 1.3kms−1 with a dispersion of ∼22.7 ± 1.7kms−1, both of these comparable to previous measurements of the Monoceros Ring in nearby fields. This detection highlights the increasing complexity of structure being revealed in recent surveys of the Milky Way thick disc and halo.
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DOI: 10.1111/j.1745-3933.2005.00095.x
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Ibata</name><affiliation wicri:level="1"><mods:affiliation>Observatoire de Strabourg, 11, rue de l'Université, F-67000, Strasbourg, France</mods:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Observatoire de Strabourg, 11, rue de l'Université, F-67000, Strasbourg</wicri:regionArea></affiliation><affiliation wicri:level="1"><mods:affiliation>E-mail: bconn@physics.usyd.edu.au</mods:affiliation><country wicri:rule="url">Australie</country></affiliation><affiliation wicri:level="1"><mods:affiliation>E-mail: bconn@physics.usyd.edu.au</mods:affiliation><country wicri:rule="url">Australie</country></affiliation><affiliation wicri:level="1"><mods:affiliation>E-mail: bconn@physics.usyd.edu.au</mods:affiliation><country wicri:rule="url">Australie</country></affiliation></author><author><name sortKey="Bellazzini, Michele" sort="Bellazzini, Michele" uniqKey="Bellazzini M" first="Michele" last="Bellazzini">Michele Bellazzini</name><affiliation wicri:level="1"><mods:affiliation>INAF – Osservatorio Astronomico di Bologna, Via Ranzani 1, 40127, Bologna, Italy</mods:affiliation><country xml:lang="fr">Italie</country><wicri:regionArea>INAF – Osservatorio Astronomico di Bologna, Via Ranzani 1, 40127, Bologna</wicri:regionArea></affiliation><affiliation wicri:level="1"><mods:affiliation>E-mail: bconn@physics.usyd.edu.au</mods:affiliation><country wicri:rule="url">Australie</country></affiliation><affiliation wicri:level="1"><mods:affiliation>E-mail: bconn@physics.usyd.edu.au</mods:affiliation><country wicri:rule="url">Australie</country></affiliation><affiliation wicri:level="1"><mods:affiliation>E-mail: bconn@physics.usyd.edu.au</mods:affiliation><country wicri:rule="url">Australie</country></affiliation></author><author><name sortKey="Irwin, Mike J" sort="Irwin, Mike J" uniqKey="Irwin M" first="Mike J." last="Irwin">Mike J. Irwin</name><affiliation><mods:affiliation>Institute of Astronomy, Madingley Road, Cambridge CB3 0HA</mods:affiliation></affiliation><affiliation wicri:level="1"><mods:affiliation>E-mail: bconn@physics.usyd.edu.au</mods:affiliation><country wicri:rule="url">Australie</country></affiliation><affiliation wicri:level="1"><mods:affiliation>E-mail: bconn@physics.usyd.edu.au</mods:affiliation><country wicri:rule="url">Australie</country></affiliation><affiliation wicri:level="1"><mods:affiliation>E-mail: bconn@physics.usyd.edu.au</mods:affiliation><country wicri:rule="url">Australie</country></affiliation></author></analytic><monogr></monogr><series><title level="j">Monthly Notices of the Royal Astronomical Society: Letters</title><title level="j" type="abbrev">MNRAS</title><idno type="ISSN">1745-3925</idno><idno type="eISSN">1745-3933</idno><imprint><publisher>Blackwell Science Ltd</publisher><pubPlace>Oxford, UK</pubPlace><date type="published" when="2005-11">2005-11</date><biblScope unit="volume">364</biblScope><biblScope unit="issue">1</biblScope><biblScope unit="page" from="L13">L13</biblScope><biblScope unit="page" to="L17">L17</biblScope></imprint><idno type="ISSN">1745-3925</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">1745-3925</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Galaxy: formation</term><term>Galaxy: structure</term><term>galaxies: interactions</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract">An AAT/2dF Spectrograph Survey of low Galactic latitudes targeting the putative Canis Major dwarf galaxy and the (possibly) associated tidal debris of stars known as the Monoceros Ring, covering Galactic coordinates and , has revealed the presence of the Monoceros Ring in the background of the Canis Major dwarf galaxy. This detection resides at a Galactocentric distance of ∼18.9 ± 0.3 kpc (13.5 ± 0.3 kpc heliocentric), exhibiting a velocity of ∼132.8 ± 1.3kms−1 with a dispersion of ∼22.7 ± 1.7kms−1, both of these comparable to previous measurements of the Monoceros Ring in nearby fields. This detection highlights the increasing complexity of structure being revealed in recent surveys of the Milky Way thick disc and halo.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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