Zobrazeno 1 - 10
of 133
pro vyhledávání: '"Scannapieco, C."'
In the standard model of structure formation, galaxies form in the centre of dark matter haloes that develop as a result of inhomogeneities in the primordial mass distribution of the Universe. Afterwards, galaxies grow by means of continuous accretio
Externí odkaz:
http://arxiv.org/abs/2306.14760
In the standard paradigm of galaxy formation and evolution, the baryonic component of galaxies forms from the collapse and condensation of gas within dark matter haloes, and later grows from continuous accretion of gaseous mass, both in diffuse form
Externí odkaz:
http://arxiv.org/abs/2106.06576
In the context of the concordance cosmology, structure formation in the Universe is the result of the amplification, by gravitational effects, of small perturbations in the primeval density field. This results in the formation of structures known as
Externí odkaz:
http://arxiv.org/abs/2106.05361
Autor:
Minchev, I., Matijevic, G., Hogg, D. W., Guiglion, G., Steinmetz, M., Anders, F., Chiappini, C., Martig, M., Queiroz, A., Scannapieco, C.
Simpson's paradox, or Yule-Simpson effect, arises when a trend appears in different subsets of data but disappears or reverses when these subsets are combined. We describe here seven cases of this phenomenon for chemo-kinematical relations believed t
Externí odkaz:
http://arxiv.org/abs/1902.01421
In this work, we investigate the contribution of dust scattering to the diffuse H-alpha emission observed in nearby galaxies. As initial conditions for the spatial distribution of HII regions, gas, and dust, we take three Milky Way-like galaxies from
Externí odkaz:
http://arxiv.org/abs/1602.08474
Recent spectroscopic observations in the Milky Way suggest that the chemically defined thick disk (stars with high [alpha/Fe] ratios and thus old) has a significantly smaller scale-length than the thin disk. This is in apparent contradiction with obs
Externí odkaz:
http://arxiv.org/abs/1502.06606
Autor:
Minchev, I., Chiappini, C., Martig, M., Steinmetz, M., de Jong, R. S., Boeche, C., Scannapieco, C., Zwitter, T., Wyse, R. F. G., Binney, J. J., Bland-Hawthorn, J., Bienayme, O., Famaey, B., Freeman, K. C., Gibson, B. K., Grebel, E. K., Gilmore, G., Helmi, A., Kordopatis, G., Lee, Y. S., Munari, U., Navarro, J. F., Parker, Q. A., Quillen, A. C., Reid, W. A., Siebert, A., Siviero, A., Seabroke, G., Watson, F., Williams, M.
The velocity dispersions of stars near the Sun are known to increase with stellar age, but age can be difficult to determine so a proxy like the abundance of alpha elements (e.g., Mg) with respect to iron, [alpha/Fe], is used. Here we report an unexp
Externí odkaz:
http://arxiv.org/abs/1310.5145
Autor:
Piffl, T., Scannapieco, C., Binney, J., Steinmetz, M., Scholz, R. -D., Williams, M. E. K., de Jong, R. S., Kordopatis, G., Matijevic, G., Bienayme, O., Bland-Hawthorn, J., Boeche, C., Freeman, K., Gibson, B., Gilmore, G., Grebel, E. K., Helmi, A., Munari, U., Navarro, J. F., Parker, Q., Reid, W. A., Seabroke, G., Watson, F., Wyse, R. F. G., Zwitter, T.
We construct new estimates on the Galactic escape speed at various Galactocentric radii using the latest data release of the Radial Velocity Experiment (RAVE DR4). Compared to previous studies we have a database larger by a factor of 10 as well as re
Externí odkaz:
http://arxiv.org/abs/1309.4293
We present a comprehensive study of the chemical properties of the stellar haloes of Milky-Way mass galaxies, analysing the transition between the inner to the outer haloes. We find the transition radius between the relative dominance of the inner-ha
Externí odkaz:
http://arxiv.org/abs/1309.3609
We investigate the chemical and kinematic properties of the diffuse stellar haloes of six simulated Milky Way-like galaxies from the Aquarius Project. Binding energy criteria are adopted to defined two dynamically distinct stellar populations: the di
Externí odkaz:
http://arxiv.org/abs/1301.1301