Lucio Mayer Personal Page

Lucio Mayer

Stellar tidal streams in an LSB satellite
Lucio Mayer
email lucio@physik.unizh.ch
phone + 41 1 635 5771
Fax + 41 1 635 5704



I am currently a PostDoc at the Institute of Theoretical Physics at the University of Zurich working with Ben Moore's theory group. I also have a strong link with the N-Body shop at the University of Washington where I have been working in the past two years. My research spans various areas of numerical astrophysics, from the dynamics and evolution of galaxies to galaxy and structure formation, from planet formation to star formation. The main belief behind my work is that numerical simulations are the most powerful tool available to understand how the Universe works. Main highlights in my work have been a new mechanism for explaining the origin of dwarf spheroidal galaxies, "tidal stirring", a high resolution N-Body/SPH simulation of galaxy formation within a cosmological context showing that disk-dominated galaxies can be produced in cold dark matter models and the first high resolution SPH simulation of the fragmentation of a protoplanetary disk that leads to the formation of gas giants with properties consistent with those of observed extrasolar planets (published on Science, 11/28/02).

Postscript document of my

cv and list of publications is available. (Updated October 2003)



Most of my work is done using the fast parallel binary TreeSPH code GASOLINE, written by James Wadsley, Joachim Stadel and Thomas Quinn
Formation of gas giant planets via fragmenation of protoplanetary disks - images and plots of the simulations complementing the Science paper

Get the high resolution version of the new paper on giant planet formation, submitted to ApJ on October 2003 and that of the proceedings of the IAP 2003 Colloquium


Movie showing the formation of giant planets from spiral structure in a protoplanetary disk (a few disk orbital times, ~ 200 years, are covered)

NEW! Movie showing the formation of giant planets in a GROWING protoplanetary disk (600 years of evolution shown, mass grows form 0.0085 to 0.085 Mo). Download the new paper for details.


Movie showing the formation of a large disk dominated galaxy in a LCDM cosmology (courtesy of Jeff Gardner). The stars are shown, color-coded according to age (brighter colors indicate younger stars at any time).

The results of the galaxy formation simulation are described in astro-ph/0207044 .

Below you can get to images and movies of my simulations on the evolution of dwarf disk galaxies in the external potential of the Milky Way

Evolution of a low surface brightness (LSB) satellite in a prograde coplanar encounter with the primary galaxy (snapshots cover 7 Gyr) GIF

Same as above for an high surface brightness (HSB) satellite GIF

And what about LSB satellites who like inclined encounters? GIF

Tidal streams in a Milky-Way halo after 7 Gyr.... (upper panel LSB satellite, lower panel HSB satellite) GIF

Beautiful tails...but prograde encounters are nicer (upper panel) than retrograde ones (lower panel) GIF

A nice movie....see the dramatic evolution of an LSB dwarf satellite as it is stretched and stirred by the Milky Way.... MPEG

...if you prefer pictures here are some snapshots of the movie, covering about 7 Gyr of evolution.

The evolution of a dwarf galaxy with a gaseous disk using the new parallel binary treeSPH code GASOLINE written by J.Wadsley, T.Quinn and J.Stadel at the University of Washington. You can see the gas density evolution GIF or the temperature evolution GIF

Some Papers in electronic form (astro-ph list)

the Local Group Page

Useful links




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