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20212025
most citedWhich stars can form planets: Planetesimal formation at low metallicities

17 citations · 56 across the 5 of their papers we have counts for

collaborators

5 papers

astro-ph.EP2025★ 4 cited

How does the chemical composition of solids influence the formation of planetesimals?

Konstantinos Odysseas Xenos, Bertram Bitsch, Geoffrey Andama

The formation of planetesimals is a necessary step in the formation of planets. While several mechanisms have been proposed, a local dust-to-gas ratio above unity is a strong requi…

astro-ph.EP2024★ 17 cited

Which stars can form planets: Planetesimal formation at low metallicities

Geoffrey Andama, Jingyi Mah, Bertram Bitsch

The exoplanet diversity has been linked to the disc environment in which they form, where the host star metallicity and the formation pathways play a crucial role. In the context o…

astro-ph.EP2022★ 8 cited

The role of density perturbation on planet formation by pebble accretion

Geoffrey Andama, Nelson Ndugu, Simon . K. Anguma +1

Protoplanetary discs exhibit a diversity of gaps and rings of dust material, believed to be a manifestation of pressure maxima commonly associated with an ongoing planet formation…

astro-ph.EP2022★ 13 cited

Planet population synthesis: The role of stellar encounters

Nelson Ndugu, Oyirwoth Patrick Abedigamba, Geoffrey Andama

Depending on the stellar densities, protoplanetary discs in stellar clusters undergo background heating, disc truncation-driven by stellar encounter, and photo-evaporation. Disc tr…

astro-ph.EP2021★ 14 cited

Planetary core formation via multi-species pebble accretion

Geoffrey Andama, Nelson Ndugu, Simon Katrini Anguma +1

In the general classical picture of pebble-based core growth, planetary cores grow by accretion of single pebble species. The growing planet may reach the so-called pebble isolatio…