Zobrazeno 1 - 10
of 1 325
pro vyhledávání: '"Brook, C"'
Autor:
Brizard, Alain J., Hodgeman, Brook C.
The problem of the charged-particle motion in an axisymmetric magnetic geometry is used to assess the validity of higher-order Hamiltonian guiding-center theory, which includes higher-order corrections associated with gyrogauge invariance as well as
Externí odkaz:
http://arxiv.org/abs/2302.01166
Autor:
Expósito-Márquez, J., Brook, C. B., Huertas-Company, M., Di Cintio, A., Macciò, A. V., Grand, R. J. J., Battaglia, G.
Numerical simulations within a cold dark matter (DM) cosmology form halos whose density profiles have a steep inner slope (`cusp'), yet observations of galaxies often point towards a flat central `core'. We develop a convolutional mixture density neu
Externí odkaz:
http://arxiv.org/abs/2209.05965
We use Gaia DR2 systemic proper motions of 45 satellite galaxies to constrain the mass of the Milky Way using the scale free mass estimator of Watkins et al. (2010). We first determine the anisotropy parameter $\beta$, and the tracer satellites' radi
Externí odkaz:
http://arxiv.org/abs/2001.02651
Autor:
Fritz, T. K., Battaglia, G., Pawlowski, M. S., Kallivayalil, N., van der Marel, R., Sohn, T. S., Brook, C., Besla, G.
Publikováno v:
A&A 619, A103 (2018)
A proper understanding of the Milky Way (MW) dwarf galaxies in a cosmological context requires knowledge of their 3D velocities and orbits. However, proper motion (PM) measurements have generally been of limited accuracy and available only for more m
Externí odkaz:
http://arxiv.org/abs/1805.00908
Autor:
Ruiz-Lara, T., Beasley, M. A., Falcón-Barroso, J., Román, J., Pinna, F., Brook, C., Di Cintio, A., Martín-Navarro, I., Trujillo, I., Vazdekis, A.
Understanding the peculiar properties of Ultra Diffuse Galaxies (UDGs) via spectroscopic analysis is a challenging task requiring very deep observations and exquisite data reduction. In this work we perform one of the most complete characterisations
Externí odkaz:
http://arxiv.org/abs/1803.06298
Recent determinations of the radial distributions of mono-metallicity populations (MMPs, i.e., stars in narrow bins in [Fe/H] within wider [$\alpha$/Fe] ranges) by the SDSS-III/APOGEE DR12 survey cast doubts on the classical thin - thick disk dichoto
Externí odkaz:
http://arxiv.org/abs/1706.05031
Autor:
Kawata, D., Prieto, C. Allende, Brook, C. B., Casagrande, L., Ciucă, I., Gibson, B. K., Grand, R. J. J., Hayden, M. R., Hunt, J. A. S.
We have developed a novel Markov Chain Mote Carlo (MCMC) chemical "painting" technique to explore possible radial and vertical metallicity gradients for the thick disc progenitor. In our analysis we match an N-body simulation to the data from the Apa
Externí odkaz:
http://arxiv.org/abs/1706.01474
Using idealised N-body simulations of a Milky Way-sized disc galaxy, we qualitatively study how the metallicity distributions of the thin disc star particles are modified by the formation of the bar and spiral arm structures. The thin disc in our num
Externí odkaz:
http://arxiv.org/abs/1604.07412
We compare the Baryonic Tully-Fisher relation (BTFR) of simulations and observations of galaxies ranging from dwarfs to spirals, using various measures of rotational velocity Vrot. We explore the BTFR when measuring Vrot at the flat part of the rotat
Externí odkaz:
http://arxiv.org/abs/1603.06595