Modelling the Galaxy in the era of Gaia (2009)
The body of photometric and astrometric data on stars in the Galaxy has been growing very fast in recent years (Hipparcos/Tycho, OGLE-3, 2-Mass, DENIS, UCAC2, SDSS, RAVE, Pan Starrs, Hermes, ...) and...
Distribution functions for the Milky Way (2009)
Analytic distribution functions (DFs) for the Galactic disc are discussed. The DFs depend on action variables and their predictions for observable quantities are explored under the assumption that...
Fitting orbits to tidal streams with proper motions (2009)
The Galaxy's stellar halo seems to be a tangle of disrupted systems that have been tidally stretched out into streams. Each stream approximately delineates an orbit in the Galactic force-field. In...
Locating the orbits delineated by tidal streams (2009)
We describe a technique that finds orbits through the Galaxy that are consistent with measurements of a tidal stream, taking into account the extent that tidal streams do not precisely delineate...
Chemical evolution with radial mixing (2008)
Schoenrich, Ralph, Binney, James
Models of the chemical evolution of our Galaxy are extended to include radial migration of stars and flow of gas through the disc. The models track the production of both iron and alpha elements. A...
Fitting orbits to tidal streams (2008)
Recent years have seen the discovery of many tidal streams through the Galaxy. Relatively straightforward observations of a stream allow one to deduce three phase-space coordinates of an orbit. An...
Accretion of gas onto nearby spiral galaxies (2008)
Fraternali, Filippo, Binney, James
We present evidence for cosmological gas accretion onto spiral galaxies in the local universe. The accretion is seen through its effects on the dynamics of the extra-planar neutral gas. The accretion...
The radial velocity experiment (rave): second data release (2008)
Zwitter, Tomaz, Siebert, Arnaud, Munari, Ulisse, Freeman, Kenneth C., Siviero, Alessandro, Watson, Fred G., ...
We present the second data release of the Radial Velocity Experiment (RAVE), an ambitious spectroscopic survey to measure radial velocities and stellar atmosphere parameters (temperature,...
The radial velocity experiment (RAVE): second data release (2008)
Zwitter, Tomaz, Siebert, Arnaud, Munari, Ulisse, Freeman, Kenneth C., Siviero, Alessandro, Watson, Fred G., ...
We present the second data release of the Radial Velocity Experiment (RAVE), an ambitious spectroscopic survey to measure radial velocities and stellar atmosphere parameters (temperature,...
The role of thermal evaporation in galaxy formation (2007)
In colour-magnitude diagrams most galaxies fall in either the ``blue cloud'' or the ``red sequence'', with the red sequence extending to significantly brighter magnitudes than the blue cloud. The...
Gaseous Haloes: Linking Galaxies to the IGM (2007)
Fraternali, Filippo, Binney, James, Oosterloo, Tom, Sancisi, Renzo
In recent years evidence has accumulated that nearby spiral galaxies are surrounded by massive haloes of neutral and ionised gas. These gaseous haloes rotate more slowly than the disks and show...
Clues from microquasars to the origin of radio-loudness of quasars (2006)
Nipoti, Carlo, Blundell, Katherine M., Binney, James
We analysed the long-term variability of four microquasars (GRS 1915+105, Cyg X-1, Cyg X-3, and Sco X-1) in radio and X rays. The results of our analysis indicate the existence of two distinct modes...
The radial velocity experiment (RAVE) : first data release (2006)
Steinmetz, Matthias, Zwitter, Tomaz, Siebert, Arnaud, Watson, Fred G., Freeman, Kenneth C., Munari, Ulisse, ...
We present the first data release of the Radial Velocity Experiment (RAVE), an ambitious spectroscopic survey to measure radial velocities and stellar atmosphere parameters (temperature, metallicity,...
The radial velocity experiment (RAVE) : first data release (2006)
Steinmetz, Matthias, Zwitter, Tomaz, Siebert, Arnaud, Watson, Fred G., Freeman, Kenneth C., Munari, Ulisse, ...
We present the first data release of the Radial Velocity Experiment (RAVE), an ambitious spectroscopic survey to measure radial velocities and stellar atmosphere parameters (temperature, metallicity,...
The radial velocity experiment (RAVE) : first data release (2006)
Steinmetz, Matthias, Zwitter, Tomaz, Siebert, Arnaud, Watson, Fred G., Freeman, Kenneth C., Munari, Ulisse, ...
We present the first data release of the Radial Velocity Experiment (RAVE), an ambitious spectroscopic survey to measure radial velocities and stellar atmosphere parameters (temperature, metallicity,...
The radial velocity experiment (RAVE) : first data release (2006)
Steinmetz, Matthias, Zwitter, Tomaz, Siebert, Arnaud, Watson, Fred G., Freeman, Kenneth C., Munari, Ulisse, ...
We present the first data release of the Radial Velocity Experiment (RAVE), an ambitious spectroscopic survey to measure radial velocities and stellar atmosphere parameters (temperature, metallicity,...
The radial velocity experiment (RAVE) : first data release (2006)
Steinmetz, Matthias, Zwitter, Tomaz, Siebert, Arnaud, Watson, Fred G., Freeman, Kenneth C., Munari, Ulisse, ...
We present the first data release of the Radial Velocity Experiment (RAVE), an ambitious spectroscopic survey to measure radial velocities and stellar atmosphere parameters (temperature, metallicity,...
A Dynamical Model for the Extra-planar Gas in Spiral Galaxies (2005)
Fraternali, Filippo, Binney, James
Recent HI observations reveal that the discs of spiral galaxies are surrounded by extended gaseous haloes. This extra-planar gas reaches large distances (several kpc) from the disc and shows peculiar...
Integral field spectroscopy of 23 spiral bulges (2005)
Batcheldor, Dan, Axon, David, Merritt, David, Hughes, M., Marconi, Alessandro, Binney, James, ...
Also archived In: astro-ph/0504660 v1 29 Apr 2005
Hughes, MA, Axon, David, Atkinson, John, Alonso-Herrero, Almudena, Scarlata, Claudia, Marconi, Alessandro, ...
Also archived in: arXiv:astro-ph/0503693 v1 31 Mar 2005
Hughes, M., Axon, David, Atkinson, John, Alonso-Herrero, Almudena, Scarlata, Claudia, Marconi, Alessandro, ...
Also archived in: arXiv:astro-ph/0503693 v1 31 Mar 2005
Radio-loud flares from microquasars and radio-loudness of quasars (2005)
Nipoti, Carlo, Blundell, Katherine M., Binney, James
The low-frequency power spectra of the X-ray and radio emission from four microquasars suggest that two distinct modes of energy output are at work: (i) the `coupled' mode in which the X-ray and...
Time variability of AGN and heating of cooling flows (2005)
There is increasing evidence that AGN mechanical feedback is important in the energetics of cooling flows in galaxies and galaxy clusters. We investigate the implications of the variability of AGN...
Atkinson, John, Collett, JL, Marconi, Alessandro, Axon, David, Alonso-Herrero, Almudena, Batcheldor, Dan, ...
Also archived in: arXiv:astro-ph/0502573 v1 28 Feb 2005
Atkinson, John, Collett, J., Marconi, Alessandro, Axon, David, Alonso-Herrero, Almudena, Batcheldor, Dan, ...
Also archived in: arXiv:astro-ph/0502573 v1 28 Feb 2005
Rotation and anisotropy of galaxies revisited (2005)
The use of the tensor virial theorem (TVT) as a diagnostic of anisotropic velocity distributions in galaxies is revisited. The TVT provides a rigorous global link between velocity anisotropy,...
Modelling the Galaxy for GAIA (2004)
Techniques for the construction of dynamical Galaxy models should be considered essential infrastructure that should be put in place before GAIA flies. Three possible modelling techniques are...
The Cosmological Context of Extraplanar Gas (2004)
I review evidence that galaxies form from gas that falls into potential wells cold, rather than from virialized gas, and that formation stops once an atmosphere of trapped virialized gas has...
Scarlata, Claudia, Stiavelli, Massimo, Hughes, M, Axon, David, Alonso-Herrero, Almudena, Atkinson, John, ...
Also archived in: arXiv:astro-ph/0408435 v1 24 Aug 2004
Scarlata, Claudia, Stiavelli, Massimo, Hughes, M., Axon, David, Alonso-Herrero, Almudena, Atkinson, John, ...
Also archived in: arXiv:astro-ph/0408435 v1 24 Aug 2004
Black holes, cuspy atmospheres, and galaxy formation (2004)
In cuspy atmospheres, jets driven by supermassive black holes (BHs) offset radiative cooling. The jets fire episodically, but often enough that the cuspy atmosphere does not move very far towards a...
Cold filaments in galaxy clusters: effects of heat conduction (2004)
We determine the critical size l_crit of a filament of cold (T~10^4 K) gas that is in radiative equilibrium with X-ray emitting gas at temperatures T_out~10^6 - 10^8 K. Filaments smaller than l_crit...
Structural stability of cooling flows (2003)
Three-dimensional hydrodynamical simulations are used to investigate the structural stability of cooling flows that are episodically heated by jets from a central AGN. The radial profile of energy...
Discreteness effects in cosmological N-body simulations (2003)
An estimate of the convergence radius of a simulated CDM halo is obtained under the assumption that the peak phase-space density in the system is set by discreteness effects that operate prior to...
Dark Matter in Galaxies: Conference Summary (2003)
The competition between CDM and MOND to account for the `missing mass' phenomena is asymmetric. MOND has clearly demonstrated that a characteristic acceleration $a_0$ underlies the data and...
Cooling Flows or Heating Flows? (2003)
It is now clear that AGN heat cooling flows, largely by driving winds. The winds may contain a relativistic component that generates powerful synchrotron radiation, but it is not clear that all winds...
On the impossibility of advection dominated accretion (2003)
Using only the assumption that all interactions between particles in an accretion flow are electromagnetically mediated, it is shown that the time to establish equipartition between ions and...
On the origin of the galaxy luminosity function (2003)
Evidence is summarized that suggests that when a protogalaxy collapses, a fraction $f$ of its gas fails to heat to the virial temperature, where $f$ is large for haloes less massive than the value...
Heating cooling flows with jets (2003)
Omma, Henrik, Binney, James, Bryan, Greg, Slyz, Adrianne
Active galactic nuclei are clearly heating gas in `cooling flows'. The effectiveness and spatial distribution of the heating are controversial. We use three-dimensional simulations on adaptive grids...
Is there really a black hole at the center of NGC 4041? - Constraints from gas kinematics (2003)
Marconi, Alessandro, Axon, David, Capetti, Alessandro, Maciejewski, Witold, Atkinson, John, Batcheldor, Dan, ...
Also archived in: arXiv:astro-ph/0211650 v1 29 Nov 2002
Simple models of cooling flows (2003)
Kaiser, Christian R., Binney, James
A semi-analytic model of cluster cooling flows is presented. The model assumes that episodic nuclear activity followed by radiative cooling without mass-dropout cycles the cluster gas between a...
Two-body relaxation in cosmological simulations (2002)
Binney, James, Knebe, Alexander
It is logically possible that early two-body relaxation in simulations of cosmological clustering influences the final structure of massive clusters. Convergence studies in which mass and spatial...
Two-body relaxation in cosmological simulations (2002)
Binney, James, Knebe, Alexander
It is logically possible that early two-body relaxation in simulations of cosmological clustering influences the final structure of massive clusters. Convergence studies in which mass and spatial...
Two-body relaxation in cosmological simulations (2002)
Binney, James, Knebe, Alexander
It is logically possible that early two-body relaxation in simulations of cosmological clustering influences the final structure of massive clusters. Convergence studies in which mass and spatial...
Two-body relaxation in cosmological simulations (2002)
Binney, James, Knebe, Alexander
It is logically possible that early two-body relaxation in simulations of cosmological clustering influences the final structure of massive clusters. Convergence studies in which mass and spatial...
Two-body relaxation in cosmological simulations (2002)
Binney, James, Knebe, Alexander
It is logically possible that early two-body relaxation in simulations of cosmological clustering influences the final structure of massive clusters. Convergence studies in which mass and spatial...
Components of the Milky Way and GAIA (2001)
The GAIA mission will produce an extraordinary database from which we should be able to deduce not only the Galaxy's current structure, but also much of its history, and thus cast a powerful light on...
Two-Body Relaxation in Cosmological Simulations (2001)
Binney, James, Knebe, Alexander
It is logically possible that early two-body relaxation in simulations of cosmological clustering influences the final structure of massive clusters. Convergence studies in which mass and spatial...
MLAPM - a C code for cosmological simulations (2001)
Knebe, Alexander, Green, Andrew, Binney, James
We present a computer code written in C that is designed to simulate structure formation from collisionless matter. The code is purely grid-based and uses a recursively refined Cartesian grid to...
For two decades the steady-state cooling-flow model has dominated the literature of cluster and elliptical-galaxy X-ray sources. For ten years this model has been in severe difficulty from a...
The black hole mass vs bulge mass relationship in spiral galaxies (2001)
Marconi, Alessandro, Axon, David, Atkinson, John, Binney, James, Capetti, Alessandro, Carollo, C. Marcella, ...
"Galaxies and their Constituents at the Highest Angular Resolutions", Proceedings of the International Astronomical Union Symposium #205. Astronomical Society of the Pacific. Held in Manchester,...
Gas kinematics from spectroscopy with a wide slit: detecting nuclear black holes (2000)
Maciejewski, Witold, Binney, James
Motivated by STIS observations of more than 50 nearby galactic nuclei, we consider long-slit emission-line spectra when the slit is wider than the instrumental PSF, and the target has arbitrarily...
Kinematics from spectroscopy with a wide slit: detecting black holes in galaxy centres (2000)
Maciejewski, Witold, Binney, James
We consider long-slit emission-line spectra of galactic nuclei when the slit is wider than the instrumental PSF, and the target has large velocity gradients. The finite width of the slit generates...
Secular Evolution of the Galactic Disk (2000)
In the solar-neighbourhood, older stars have larger random velocities than younger ones. It is argued that the increase in velocity dispersion with time is predominantly a gradual process rather than...
An energetic argument implies that a galaxy like the Milky Way is blowing a powerful wind that carries away most of the heavy elements currently synthesized and has impacted the IGM out to at least...
Dynamics of the Galaxy's Satellites (2000)
The Milky Way's satellites provide unique information about the density of the Galactic halo at large radii. The inclusion of even a few rather inaccurate proper motions resolves an ambiguity in...
Microlensing and Galactic Structure (2000)
Because we know little about the Galactic force-field away from the plane, the Galactic mass distribution is very ill-determined. I show that a microlensing survey of galaxies closer than 50 Mpc...
The Age of the Solar Neighbourhood (2000)
Binney, James, Dehnen, Walter, Bertelli, Gianpaolo
High-quality Hipparcos data for a complete sample of nearly 12000 main-sequence and subgiant stars, together with Padua isochrones, are used to constrain the star-formation history of the solar...
Is Galactic Structure Compatible with Microlensing Data? (2000)
Binney, James, Bissantz, Nicolai, Gerhard, Ortwin
We generalize to elliptical models the argument of Kuijken (1997), which connects the microlensing optical depth towards the Galactic bulge to the Galactic rotation curve. When applied to the latest...
The Orbit and Mass of the Sagittarius Dwarf Galaxy (1999)
Jiang, Ing-Guey, Binney, James
Possible orbital histories of the Sgr dwarf galaxy are explored. A special-purpose N-body code is used to construct the first models of the Milky Way - Sgr Dwarf system in which both the Milky Way...
A Dynamical Model of the Inner Galaxy (1999)
Hafner, Ralf M., Evans, N. Wyn, Dehnen, Walter, Binney, James
An extension of Schwarzschild's galaxy-building technique is presented that, for the first time, enables one to build Schwarzschild models with known distribution functions (DFs). The new extension...
A Dynamical Model of the Inner Galaxy (1999)
Ralf Häfner, N. Wyn Evans, Walter Dehnen, James Binney
An extension of Schwarzschild's (1979) galaxy-building technique is presented that, for the first time, enables one to build Schwarzschild models with known distribution functions (DFs). The new...
The abundance of brown dwarfs (1998)
The amount of mass contained in low-mass objects is investigated anew. Instead of using a mass-luminosity relation to convert a luminosity function to a mass function, I predict the mass-luminosity...
Warps and Cosmic Infall (1998)
Jiang, Ing-Guey, Binney, James
N-body simulations show that when infall reorientates the outer parts of a galactic halo by several degrees per Gyr, a self-gravitating disk that is embedded in the halo develops an integral-sign...
Gerhard, Ortwin, Binney, James, Zhao, HongSheng
We summarize recent work on the structure and dynamics of the Galactic bar and inner disk. Current work focusses on constructing a quantitative model which integrates NIR photometry, source count...
Local stellar kinematics from Hipparcos data (1997)
(shortened) From a kinematically unbiased subsample of the Hipparcos catalogue we have redetermined as a function of colour the kinematics of main-sequence stars. The stars' mean heliocentric...
Gravitational lensing and the angular-diameter distance relation (1997)
Hadrovic, Fedja, Binney, James
We show that the usual relation between redshift and angular-diameter distance can be obtained by considering light from a source to be gravitationally lensed by material that lies in the telescope...
The Persistence of Warps in Spiral Galaxies with Massive Halos (1997)
Binney, James, Jiang, Ing-Guey, Dutta, Suvendra
We study the persistence of warps in galactic discs in the presence of massive halos. A disc is approximated by a set of massive rings, while a halo is represented by a conventional n-body...
The outer rotation curve of the Milky Way (1996)
A straightforward determination of the circular-speed curve vc(R) of the Milky Way suggests that near the Sun, vc starts to rise approximately linearly with R. If this result were correct, the...
Mass models of the Milky Way (1996)
A parameterized model of the mass distribution within the Milky Way is fitted to the available observational constraints. The most important single parameter is the ratio of the scale length R_d* of...
The photometric structure of the inner Galaxy (1996)
Binney, James, Gerhard, Ortwin, Spergel, David
The light distribution in the inner few kiloparsecs of the Milky Way is recovered non-parametrically from a dust-corrected near-infrared COBE/DIRBE surface brightness map of the inner Galaxy. The...
Dynamical Models for the Milky Way (1996)
The only way to map the Galaxy's gravitational potential $\Phi({\bf x})$ and the distribution of matter that produces it is by modelling the dynamics of stars and gas. Observations of the kinematics...
On the deprojection of the Galactic bulge (1995)
Binney, James, Gerhard, Ortwin
An algorithm is developed and tested for the problem posed by photometric observations of the bulge of the Milky Way. The latter subtends a non-trivial solid angle on the sky, and we show that this...
On the deprojection of axisymmetric bodies (1995)
Gerhard, Ortwin, Binney, James
Axisymmetric density distributions are constructed which are invisible when viewed from a range of inclination angles $i$. By adding such distributions to a model galaxy, it can be made either disky...
The Principle of Least Action and Clustering in Cosmology (1994)
Susperregi, Mikel, Binney, James
A scheme is developed which enables one to trace backwards in time the cosmic density and velocity fields, and to determine accurately the current-epoch velocity field from the current-epoch density...