Chemical clues on the formation of planetary systems

• Type: Article in International Conference Proceedings Book
• Date: 2011

Authors

Delgado Mena, ED (Author) Other; Israelian, G (Author) Other; Gonzalez Hernandez, JIG (Author) Other; Bond, JC (Author) Other; N.C. Santos (Author) FCUP; Udry, S (Author) Other; Mayor, M (Author) Other

Conference proceedings International

Title: ASTROPHYSICS OF PLANETARY SYSTEMS: FORMATION, STRUCTURE, AND DYNAMICAL EVOLUTION

Pages: 25-29

276th Symposium of the International-Astronomical-Union on Astrophysics of Planetary Systems: Formation, Structure, and Dynamical Evolution

Torino, ITALY, OCT 10-15, 2010

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Other information

Authenticus ID: P-005-70K

DOI: 10.1017/s1743921311019880

Abstract (EN): Theoretical studies suggest that C/O and Mg/Si are the most important elemental ratios in determining the mineralogy of terrestrial planets. The C/O ratio controls the distribution of Si among carbide and oxide species, while Mg/Si gives information about the silicate mineralogy. We find mineralogical ratios quite different from those of the Sun, showing that there is a wide variety of planetary systems which are not similar to Solar System. Many of planetary host stars present a Mg/Si value lower than 1, so their planets will have a high Si content to form species such as MgSiO3. This type of composition can have important implications for planetary processes like plate tectonics, atmospheric composition or volcanism. Moreover, the information given by these ratios can guide us in the search of stars more probable to form terrestrial planets.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 5