Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Binney, James J."'
Autor:
McMillan, Paul J., Binney, James J.
We consider the problem of determining the Galaxy's gravitational potential from a star catalogue. We show that orbit-based approaches to this problem suffer from unacceptable numerical noise deriving from the use of only a finite number of orbits. A
Externí odkaz:
http://arxiv.org/abs/1303.5660
Autor:
McMillan, Paul J., Binney, James J.
We re-examine the method of deprojection of proper motions, which has been used for finding the velocity ellipsoid of stars in the nearby Galaxy. This method is only legitimate if the lines of sight to the individual stars are uncorrelated with the s
Externí odkaz:
http://arxiv.org/abs/0909.1679
Autor:
McMillan, Paul J., Binney, James J.
We reanalyse the measurements of parallax, proper motion, and line-of-sight velocity for 18 masers in high mass star-forming regions presented by Reid et al. (2009). We use a likelihood analysis to investigate the distance of the Sun from the Galacti
Externí odkaz:
http://arxiv.org/abs/0907.4685
Autor:
Aumer, Michael, Binney, James J.
We use proper motions and parallaxes from the new reduction of Hipparcos data and Geneva-Copenhagen radial velocities for a complete sample of ~15000 main-sequence and subgiant stars, and new Padova isochrones to constrain the kinematics and star-for
Externí odkaz:
http://arxiv.org/abs/0905.2512
Autor:
McMillan, Paul J., Binney, James J.
Angle-action coordinates are used to study the relic of an N-body simulation of a self-gravitating satellite galaxy that was released on a short-period orbit within the disc of the Galaxy. Satellite stars that lie within 1.5 kpc of the Sun are confin
Externí odkaz:
http://arxiv.org/abs/0806.0319
Autor:
Kaiser, Christian R., Binney, James J.
We emphasise the importance of the gas entropy in studying the evolution of cluster gas evolving under the influence of radiative cooling. On this basis, we develop an analytical model for this evolution. We then show that the assumptions needed for
Externí odkaz:
http://arxiv.org/abs/astro-ph/0309513
We present a simple analytical model and the results of numerical simulations supporting the idea of periodical heating of cluster gas by AGN outflows. We show why, under this assumption, we are extremely unlikely to observe clusters containing gas w
Externí odkaz:
http://arxiv.org/abs/astro-ph/0210569
Autor:
Kaiser, Christian R., Binney, James J.
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 relatively homogeneous, nearly isothermal post-outburst
Externí odkaz:
http://arxiv.org/abs/astro-ph/0207111
Autor:
Binney, James J.
Publikováno v:
Science, 2006 Jan 01. 311(5757), 44-45.
Externí odkaz:
https://www.jstor.org/stable/3843296
Akademický článek
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