Search Results - "Freeman, K. C."
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HERBS II: Detailed chemical compositions of Galactic bulge stars
Published in Monthly notices of the Royal Astronomical Society (01-07-2019)“…ABSTRACT This work explores the detailed chemistry of the Milky Way bulge using the HERMES spectrograph on the Anglo-Australian Telescope. Here, we present the…”
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Galaxy Disks
Published in Annual review of astronomy and astrophysics (22-09-2011)“…The disks of disk galaxies contain a substantial fraction of their baryonic matter and angular momentum, and much of the evolutionary activity in these…”
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The RAVE survey: constraining the local Galactic escape speed
Published in Monthly notices of the Royal Astronomical Society (01-08-2007)“…We report new constraints on the local escape speed of our Galaxy. Our analysis is based on a sample of high-velocity stars from the RAVE survey and two…”
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Local stellar kinematics from RAVE data - I. Local standard of rest
Published in Monthly notices of the Royal Astronomical Society (01-04-2011)“…We analyse a sample of 82 850 stars from the RAdial Velocity Experiment (RAVE) survey, with well-determined velocities and stellar parameters, to isolate a…”
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Through thick and thin: kinematic and chemical components in the solar neighbourhood
Published in Monthly notices of the Royal Astronomical Society (01-04-2011)“…We search for chemically distinct stellar components in the solar neighbourhood using a compilation of published data. Extending earlier work, we show that…”
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Is the Milky Way still breathing? RAVE–Gaia streaming motions
Published in Monthly notices of the Royal Astronomical Society (01-04-2018)“…We use data from the Radial Velocity Experiment (RAVE) and the Tycho-Gaia astrometric solution (TGAS) catalogue to compute the velocity fields yielded by the…”
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Kinematic properties of early-type galaxy haloes using planetary nebulae
Published in Monthly notices of the Royal Astronomical Society (11-04-2009)“…We present new planetary nebulae (PNe) positions, radial velocities and magnitudes for six early-type galaxies obtained with the Planetary Nebulae Spectrograph…”
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The rich are different: evidence from the RAVE survey for stellar radial migration
Published in Monthly notices of the Royal Astronomical Society (11-03-2015)“…Using the RAdial Velocity Experiment fourth data release (RAVE DR4), and a new metallicity calibration that will be also taken into account in the future RAVE…”
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Formation of ω Centauri from an ancient nucleated dwarf galaxy in the young Galactic disc
Published in Monthly notices of the Royal Astronomical Society (01-12-2003)“…ABSTRACT We first present a self‐consistent dynamical model in which ω Cen is formed from an ancient nucleated dwarf galaxy merging with the first generation…”
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Principal component analysis on chemical abundances spaces
Published in Monthly notices of the Royal Astronomical Society (01-04-2012)“…In preparation for the High Efficiency and Resolution Multi-Element Spectrograph (HERMES) chemical tagging survey of about a million Galactic FGK stars, we…”
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The age–metallicity relation in the solar neighbourhood from a pilot sample of white dwarf–main sequence binaries
Published in Monthly notices of the Royal Astronomical Society (01-12-2016)“…The age-metallicity relation (AMR) is a fundamental observational constraint for understanding how the Galactic disc formed and evolved chemically in time…”
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Is the Milky Way ringing? The hunt for high-velocity streams
Published in Monthly notices of the Royal Astronomical Society. Letters (01-06-2009)“…We perform numerical simulations of a stellar galactic disc with initial conditions chosen to represent an unrelaxed population which might have been left…”
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In the thick of it: metal-poor disc stars in RAVE
Published in Monthly notices of the Royal Astronomical Society (21-12-2013)“…By selecting in the Radial Velocity Experiment-fourth data release (RAVE-DR4) survey the stars located between 1 and 2 kpc above the Galactic plane, we…”
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Planetary Nebula Spectrograph survey of S0 galaxy kinematics - II. Clues to the origins of S0 galaxies
Published in Monthly notices of the Royal Astronomical Society (21-06-2013)“…The stellar kinematics of the spheroids and discs of S0 galaxies contain clues to their formation histories. Unfortunately, it is difficult to disentangle the…”
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Detection of a radial velocity gradient in the extended local disc with RAVE
Published in Monthly notices of the Royal Astronomical Society (01-04-2011)“…Using a sample of 213 713 stars from the Radial Velocity Experiment (RAVE) survey, limited to a distance of 2 kpc from the Sun and to |z| < 1 kpc, we report…”
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NGC 300: An Extremely Faint, Outer Stellar Disk Observed to 10 Scale Lengths
Published in The Astrophysical journal (10-08-2005)“…We have used the Gemini Multi-Object Spectrograph (GMOS) on the Gemini South 8 m telescope in exceptional conditions (0."6 FWHM seeing) to observe the outer…”
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CHROMOSPHERICALLY ACTIVE STARS IN THE RAVE SURVEY. II. YOUNG DWARFS IN THE SOLAR NEIGHBORHOOD
Published in The Astrophysical journal (20-01-2017)“…ABSTRACT A large sample of over 38,000 chromospherically active candidate solar-like stars and cooler dwarfs from the RAVE survey is addressed in this paper…”
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The Planetary Nebula Spectrograph elliptical galaxy survey: the dark matter in NGC 4494
Published in Monthly notices of the Royal Astronomical Society (2009)“…We present new Planetary Nebula Spectrograph observations of the ordinary elliptical galaxy NGC 4494, resulting in positions and velocities of 255 planetary…”
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A deep kinematic survey of planetary nebulae in the Andromeda galaxy using the Planetary Nebula Spectrograph
Published in Monthly notices of the Royal Astronomical Society (11-06-2006)“…We present a catalogue of positions, magnitudes and velocities for 3300 emission-line objects found by the Planetary Nebula Spectrograph in a survey of the…”
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The shape of dark matter haloes – V. Analysis of observations of edge-on galaxies
Published in Monthly notices of the Royal Astronomical Society (01-01-2017)“…In previous papers in this series, we measured the stellar and H i content in a sample of edge-on galaxies. In the present paper, we perform a simultaneous…”
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